Current member names for mutex/spinlock are a little confusing.
Change the
{
struct mutex lock;
spinlock_t curr_lock;
}
to
{
struct mutex mutex;
spinlock_t lock;
}
So that the code is cleaner and easier to read.
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Some bus types don't support power management natively, but generally
there may be device nodes in ACPI tables corresponding to the devices
whose bus types they are (under ACPI 5 those bus types may be SPI,
I2C and platform). If that is the case, standard ACPI power
management may be applied to those devices, although currently the
kernel has no means for that.
For this reason, provide a set of routines that may be used as power
management callbacks for such devices. This may be done in three
different ways.
(1) Device drivers handling the devices in question may run
acpi_dev_pm_attach() in their .probe() routines, which (on
success) will cause the devices to be added to the general ACPI
PM domain and ACPI power management will be used for them going
forward. Then, acpi_dev_pm_detach() may be used to remove the
devices from the general ACPI PM domain if ACPI power management
is not necessary for them any more.
(2) The devices' subsystems may use acpi_subsys_runtime_suspend(),
acpi_subsys_runtime_resume(), acpi_subsys_prepare(),
acpi_subsys_suspend_late(), acpi_subsys_resume_early() as their
power management callbacks in the same way as the general ACPI
PM domain does that.
(3) The devices' drivers may execute acpi_dev_suspend_late(),
acpi_dev_resume_early(), acpi_dev_runtime_suspend(),
acpi_dev_runtime_resume() from their power management callbacks
as appropriate, if that's absolutely necessary, but it is not
recommended to do that, because such drivers may not work
without ACPI support as a result.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Introduce helper function returning the target sleep state of the
system and use it to move the remaining device power management
functions from sleep.c to device_pm.c.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
If the caller of acpi_bus_set_power() already has a pointer to the
struct acpi_device object corresponding to the device in question, it
doesn't make sense for it to go through acpi_bus_get_device(), which
may be costly, because it involves acquiring the global ACPI
namespace mutex.
For this reason, export the function operating on struct acpi_device
objects used internally by acpi_bus_set_power(), so that it may be
called instead of acpi_bus_set_power() in the above case, and change
its name to acpi_device_set_power().
Additionally, introduce two inline wrappers for checking ACPI PM
capabilities of devices represented by struct acpi_device objects.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Two device wakeup management routines in device_pm.c and sleep.c,
acpi_pm_device_run_wake() and acpi_pm_device_sleep_wake(), take a
device pointer argument and use it to obtain the ACPI handle of the
corresponding ACPI namespace node. That handle is then used to get
the address of the struct acpi_device object corresponding to the
struct device passed as the argument.
Unfortunately, that last operation may be costly, because it involves
taking the global ACPI namespace mutex, so it shouldn't be carried
out too often. However, the callers of those routines usually call
them in a row with acpi_pm_device_sleep_state() which also takes that
mutex for the same reason, so it would be more efficient if they ran
acpi_bus_get_device() themselves to obtain a pointer to the struct
acpi_device object in question and then passed that pointer to the
appropriate PM routines.
To make that possible, split each of the PM routines mentioned above
in two parts, one taking a struct acpi_device pointer argument and
the other implementing the current interface for compatibility.
Additionally, change acpi_pm_device_run_wake() to actually return
an error code if there is an error while setting up runtime remote
wakeup for the device.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The ACPI function for setting up devices to do runtime remote
wakeup is now located in drivers/acpi/sleep.c, but
drivers/acpi/device_pm.c is a more logical place for it, so move it
there.
No functional changes should result from this modification.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The ACPI function for choosing device power state is now located
in drivers/acpi/sleep.c, but drivers/acpi/device_pm.c is a more
logical place for it, so move it there.
However, instead of moving the function entirely, move its core only
under a different name and with a different list of arguments, so
that it is more flexible, and leave a wrapper around it in the
original location.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
ACPI routines for adding and removing device wakeup notifiers are
currently defined in a PCI-specific file, but they will be necessary
for non-PCI devices too, so move them to a separate file under
drivers/acpi and rename them to indicate their ACPI origins.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The kerneldoc comments for acpi_pm_device_sleep_state(),
acpi_pm_device_run_wake(), and acpi_pm_device_sleep_wake() are
outdated or otherwise inaccurate and/or don't follow the common
kerneldoc patterns, so fix them.
Additionally, notice that acpi_pm_device_run_wake() should be under
CONFIG_PM_RUNTIME rather than under CONFIG_PM_SLEEP, so fix that too.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* pci/misc:
PCI/ACPI: Notify PCI devices when their power resource is turned on
PCI: Add GPL license for drivers/pci/ioapic module
PCI: Fix bit definitions of PCI_EXP_LNKCAP2 register
This patch reduces power consumption by allowing idle devices to go to a
low power state after another device on the same power resource has been
awakened.
A power resource may be shared by multiple devices. When all devices
sharing a power resource are put into D3_COLD state, the power resource
will be turned off. When one of the devices is awakened, the power
resource will be turned on and all devices sharing it will be powered on to
D0uninitialized state. These devices should be resumed, so that they have
the opportunity to go to low power state later.
[bhelgaas: changelog]
Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
This patch moves up the code block to request _OSC control in order to
separate ACPI work and PCI work in acpi_pci_root_add().
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
pci_ext_cfg_avail() doesn't use the "struct pci_dev *" passed to
it, and there's no requirement that a host bridge even be represented
by a pci_dev. This drops the pci_ext_cfg_avail() parameter.
[bhelgaas: changelog]
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
We used to add the _PRT after enumerating devices behind a new host
bridge. This moves the _PRT addition *before* the enumeration, since
it no longer depends on the struct pci_bus existing. This is one
step towards consolidating the .add/.start methods.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Taku Izumi <izumim.taku@jp.fujitsu.com>
This effectively reverts 859a3f86ca ("ACPI: simplify
acpi_pci_irq_add_prt() API") and d9efae3688 ("ACPI: simplify
acpi_pci_irq_del_prt() API").
The reason is to disentangle these routines from the struct pci_bus.
We want to be able to add the _PRT before the struct pci_bus
exists, and delete the _PRT after we've removed the pci_bus.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
This patch adds the thermal zone parameter as an argument to
the tzd_register() function call; and updates other drivers
using this function.
Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Call the sub-driver .remove() methods in the reverse order of the
.add() methods for symmetry.
[bhelgaas: changelog]
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Corresponding to add path.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
It will call pci_stop_and_remove_bus() to stop/remove pci root bus.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
CC: Len Brown <lenb@kernel.org>
CC: linux-acpi@vger.kernel.org
After we get hot-added IOAPIC registered.
pci_enable_bridges() will try to enable IOAPIC IRQ for PCI bridges.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
There are systems where video module known to work fine regardless
of broken _DOD and ignoring returned value here doesn't cause
any issues later. This should fix brightness controls on some laptops.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=47861
Signed-off-by: Igor Murzov <e-mail@date.by>
Reviewed-by: Sergey V <sftp.mtuci@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
We handle NOTIFY_THROTTLING so don't then fall through to unsupported event.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Make ACPI power management routines and PCI power management
routines depending on ACPI take device PM QoS flags into account
when deciding what power state to put the device into.
In particular, after this change acpi_pm_device_sleep_state() will
not return ACPI_STATE_D3_COLD as the deepest available low-power
state if PM_QOS_FLAG_NO_POWER_OFF is requested for the device and it
will not require remote wakeup to work for the device in the returned
low-power state if there is at least one PM QoS flags request for the
device, but PM_QOS_FLAG_REMOTE_WAKEUP is not requested for it.
Accordingly, acpi_pci_set_power_state() will refuse to put the
device into D3cold if PM_QOS_FLAG_NO_POWER_OFF is requested for it.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Huang Ying <ying.huang@intel.com>
Memory is allocated with kzalloc() and assigned to
'physical_node'. Then 'physical_node->node_id' is initialized with a
call to 'find_first_zero_bit()', if that results in a value greater
than ACPI_MAX_PHYSICAL_NODE we'll end up jumping to the 'err:' label
and there leave the function and let 'physical_node' go out of scope
and leak the memory we allocated.
This patch fixes the leak by simply freeing the unused/unneeded memory
pointed to by 'physical_node' just before we jump to 'err:'.
[rjw: The problem has been introduced by commit 1033f90 (ACPI: Allow
ACPI binding with USB-3.0 hub), which is new in 3.7-rc.]
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Reviewed-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Drivers may make calls that require the ACPI IPMI driver to have been
initialised already, so make sure that it appears earlier in the build
order.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Conflicts:
drivers/staging/omap-thermal/omap-thermal-common.
OMAP supplied dummy TC1 and TC2,
at the same time that the thermal tree removed them
from thermal_zone_device_register()
drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
propogate the upstream MAX_IDR_LEVEL re-name
to prevent a build failure
Previously-fixed-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Len Brown <len.brown@intel.com>
The dereference should be moved below the NULL test.
dpatch engine is used to auto generate this patch.
(https://github.com/weiyj/dpatch)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Len Brown <len.brown@intel.com>
Pul ACPI & Power Management updates from Len Brown:
- acpidump utility added
- intel_idle driver now supports IVB Xeon
- turbostat utility can now count SMIs
- ACPI can now bind to USB3 hubs
- misc fixes
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (49 commits)
ACPI: Add new sysfs interface to export device description
ACPI: Harden acpi_table_parse_entries() against BIOS bug
tools/power/turbostat: add option to count SMIs, re-name some options
tools/power turbostat: add [-d MSR#][-D MSR#] options to print counter deltas
intel_idle: enable IVB Xeon support
tools/power turbostat: add [-m MSR#] option
tools/power turbostat: make -M output pretty
tools/power turbostat: print more turbo-limit information
tools/power turbostat: delete unused line
tools/power turbostat: run on IVB Xeon
tools/power/acpi/acpidump: create acpidump(8), local make install targets
tools/power/acpi/acpidump: version 20101221 - find dynamic tables in sysfs
ACPI: run _OSC after ACPI_FULL_INITIALIZATION
tools/power/acpi/acpidump: create acpidump(8), local make install targets
tools/power/acpi/acpidump: version 20101221 - find dynamic tables in sysfs
tools/power/acpi/acpidump: version 20071116
tools/power/acpi/acpidump: version 20070714
tools/power/acpi/acpidump: version 20060606
tools/power/acpi/acpidump: version 20051111
xo15-ebook: convert to module_acpi_driver()
...
Add support to export the device description obtained from the ACPI _STR
method, if one exists for a device, to user-space via a sysfs interface.
This new interface provides a standard and platform neutral way for users
to obtain the description text stored in the ACPI _STR method. If no
_STR method exists for the device, no sysfs 'description' file will be
created. The 'description' file will be located in the /sys/devices/
directory using the device's path.
/sys/device/<bus>/<bridge path>/<device path>.../firmware_node/description
Example:
/sys/devices/pci0000:00/0000:00.07.0/0000:0e:00.0/firmware_node/description
It can also be located using the ACPI device path, for example:
/sys/devices/LNXSYSTM:00/device:00/ACPI0004:00/PNP0A08:00/device:13/device:15/description
/sys/devices/LNXSYSTM:00/device:00/ACPI0004:00/ACPI0004:01/ACPI0007:02/description
Execute the 'cat' command on the 'description' file to obtain the
description string for that device.
This patch also includes documentation describing how the new sysfs
interface works
Changes from v1-v2 based on comments by Len Brown and Fengguang Wu
* Removed output "No Description" and leaving a NULL attribute if the
_STR method failed to evaluate.
* In acpi_device_remove_files() removed the redundent check of
dev->pnp.str_obj before calling free. This check triggered a message
from smatch.
Signed-off-by: Lance Ortiz <lance.ortiz@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Parsing acpi table entries may fall into an infinite loop on a buggy BIOS
which has entry length=0 in acpi table.
Instead of kernel hang with few failure clue which leads to heavy lifting debug
effort, this patch hardens kernel boot by booting into non NUMA mode. The debug
info left in log buffer helps people identify the issue.
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
By enlarging the GPE storm threshold back to 20, that laptop's
EC works fine with interrupt mode instead of polling mode.
https://bugzilla.kernel.org/show_bug.cgi?id=45151
Reported-and-Tested-by: Francesco <trentini@dei.unipd.it>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
cc: stable@vger.kernel.org
The Linux EC driver includes a mechanism to detect GPE storms,
and switch from interrupt-mode to polling mode. However, polling
mode sometimes doesn't work, so the workaround is problematic.
Also, different systems seem to need the threshold for detecting
the GPE storm at different levels.
ACPI_EC_STORM_THRESHOLD was initially 20 when it's created, and
was changed to 8 in 2.6.28 commit 06cf7d3c7 "ACPI: EC: lower interrupt storm
threshold" to fix kernel bug 11892 by forcing the laptop in that bug to
work in polling mode. However in bug 45151, it works fine in interrupt
mode if we lift the threshold back to 20.
This patch makes the threshold a module parameter so that user has a
flexible option to debug/workaround this issue.
The default is unchanged.
This is also a preparation patch to fix specific systems:
https://bugzilla.kernel.org/show_bug.cgi?id=45151
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
cc: stable@vger.kernel.org
Pull drm merge (part 1) from Dave Airlie:
"So first of all my tree and uapi stuff has a conflict mess, its my
fault as the nouveau stuff didn't hit -next as were trying to rebase
regressions out of it before we merged.
Highlights:
- SH mobile modesetting driver and associated helpers
- some DRM core documentation
- i915 modesetting rework, haswell hdmi, haswell and vlv fixes, write
combined pte writing, ilk rc6 support,
- nouveau: major driver rework into a hw core driver, makes features
like SLI a lot saner to implement,
- psb: add eDP/DP support for Cedarview
- radeon: 2 layer page tables, async VM pte updates, better PLL
selection for > 2 screens, better ACPI interactions
The rest is general grab bag of fixes.
So why part 1? well I have the exynos pull req which came in a bit
late but was waiting for me to do something they shouldn't have and it
looks fairly safe, and David Howells has some more header cleanups
he'd like me to pull, that seem like a good idea, but I'd like to get
this merge out of the way so -next dosen't get blocked."
Tons of conflicts mostly due to silly include line changes, but mostly
mindless. A few other small semantic conflicts too, noted from Dave's
pre-merged branch.
* 'drm-next' of git://people.freedesktop.org/~airlied/linux: (447 commits)
drm/nv98/crypt: fix fuc build with latest envyas
drm/nouveau/devinit: fixup various issues with subdev ctor/init ordering
drm/nv41/vm: fix and enable use of "real" pciegart
drm/nv44/vm: fix and enable use of "real" pciegart
drm/nv04/dmaobj: fixup vm target handling in preparation for nv4x pcie
drm/nouveau: store supported dma mask in vmmgr
drm/nvc0/ibus: initial implementation of subdev
drm/nouveau/therm: add support for fan-control modes
drm/nouveau/hwmon: rename pwm0* to pmw1* to follow hwmon's rules
drm/nouveau/therm: calculate the pwm divisor on nv50+
drm/nouveau/fan: rewrite the fan tachometer driver to get more precision, faster
drm/nouveau/therm: move thermal-related functions to the therm subdev
drm/nouveau/bios: parse the pwm divisor from the perf table
drm/nouveau/therm: use the EXTDEV table to detect i2c monitoring devices
drm/nouveau/therm: rework thermal table parsing
drm/nouveau/gpio: expose the PWM/TOGGLE parameter found in the gpio vbios table
drm/nouveau: fix pm initialization order
drm/nouveau/bios: check that fixed tvdac gpio data is valid before using it
drm/nouveau: log channel debug/error messages from client object rather than drm client
drm/nouveau: have drm debugging macros build on top of core macros
...
* Improved system suspend/resume and runtime PM handling for the SH TMU, CMT
and MTU2 clock event devices (also used by ARM/shmobile).
* Generic PM domains framework extensions related to cpuidle support and
domain objects lookup using names.
* ARM/shmobile power management updates including improved support for the
SH7372's A4S power domain containing the CPU core.
* cpufreq changes related to AMD CPUs support from Matthew Garrett, Andre
Przywara and Borislav Petkov.
* cpu0 cpufreq driver from Shawn Guo.
* cpufreq governor fixes related to the relaxing of limit from Michal Pecio.
* OMAP cpufreq updates from Axel Lin and Richard Zhao.
* cpuidle ladder governor fixes related to the disabling of states from
Carsten Emde and me.
* Runtime PM core updates related to the interactions with the system suspend
core from Alan Stern and Kevin Hilman.
* Wakeup sources modification allowing more helper functions to be called from
interrupt context from John Stultz and additional diagnostic code from Todd
Poynor.
* System suspend error code path fix from Feng Hong.
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Merge tag 'pm-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael J Wysocki:
- Improved system suspend/resume and runtime PM handling for the SH
TMU, CMT and MTU2 clock event devices (also used by ARM/shmobile).
- Generic PM domains framework extensions related to cpuidle support
and domain objects lookup using names.
- ARM/shmobile power management updates including improved support for
the SH7372's A4S power domain containing the CPU core.
- cpufreq changes related to AMD CPUs support from Matthew Garrett,
Andre Przywara and Borislav Petkov.
- cpu0 cpufreq driver from Shawn Guo.
- cpufreq governor fixes related to the relaxing of limit from Michal
Pecio.
- OMAP cpufreq updates from Axel Lin and Richard Zhao.
- cpuidle ladder governor fixes related to the disabling of states from
Carsten Emde and me.
- Runtime PM core updates related to the interactions with the system
suspend core from Alan Stern and Kevin Hilman.
- Wakeup sources modification allowing more helper functions to be
called from interrupt context from John Stultz and additional
diagnostic code from Todd Poynor.
- System suspend error code path fix from Feng Hong.
Fixed up conflicts in cpufreq/powernow-k8 that stemmed from the
workqueue fixes conflicting fairly badly with the removal of support for
hardware P-state chips. The changes were independent but somewhat
intertwined.
* tag 'pm-for-3.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (76 commits)
Revert "PM QoS: Use spinlock in the per-device PM QoS constraints code"
PM / Runtime: let rpm_resume() succeed if RPM_ACTIVE, even when disabled, v2
cpuidle: rename function name "__cpuidle_register_driver", v2
cpufreq: OMAP: Check IS_ERR() instead of NULL for omap_device_get_by_hwmod_name
cpuidle: remove some empty lines
PM: Prevent runtime suspend during system resume
PM QoS: Use spinlock in the per-device PM QoS constraints code
PM / Sleep: use resume event when call dpm_resume_early
cpuidle / ACPI : move cpuidle_device field out of the acpi_processor_power structure
ACPI / processor: remove pointless variable initialization
ACPI / processor: remove unused function parameter
cpufreq: OMAP: remove loops_per_jiffy recalculate for smp
sections: fix section conflicts in drivers/cpufreq
cpufreq: conservative: update frequency when limits are relaxed
cpufreq / ondemand: update frequency when limits are relaxed
properly __init-annotate pm_sysrq_init()
cpufreq: Add a generic cpufreq-cpu0 driver
PM / OPP: Initialize OPP table from device tree
ARM: add cpufreq transiton notifier to adjust loops_per_jiffy for smp
cpufreq: Remove support for hardware P-state chips from powernow-k8
...
Alex writes:
"The big changes for 3.7 include:
- Asynchronous VM page table updates for Cayman/SI
- 2 level VM page table support. Saves memory compared to 1 level
page tables.
- Reworked PLL handing in the display code allows lots more
combinations of monitors to work, including more than two
DP displays assuming compatible clocks across shared PLLs.
This also allows us to power down extra PLLs when we can
share a single one across multiple displays which saves power.
- Native backlight control on ATOMBIOS systems.
- Improved ACPI support for interacting with the GPU. Fixes
backlight control on some laptops.
- Document AMD ACPI interfaces
- Lots of code cleanup
- Bug fixes"
* 'drm-next-3.7' of git://people.freedesktop.org/~agd5f/linux: (79 commits)
drm/radeon: add vm set_page() callback for SI
drm/radeon: rework the vm_flush interface
drm/radeon: use WRITE_DATA packets for vm flush on SI
drm/radeon/pm: fix multi-head profile handling on BTC+ (v2)
drm/radeon: fix radeon power state debug output
drm/radeon: force MSIs on RS690 asics
drm/radeon: Add MSI quirk for gateway RS690
drm/radeon: allow MIP_ADDRESS=0 for MSAA textures on Evergreen
drm/radeon/kms: allow STRMOUT_BASE_UPDATE on RS780 and RS880
drm/radeon: add 2-level VM pagetables support v9
drm/radeon: refactor set_page chipset interface v5
drm/radeon: Fix scratch register leak in IB test.
drm/radeon: restore backlight level on resume
drm/radeon: add get_backlight_level callback
drm/radeon: only adjust default clocks on NI GPUs
drm/radeon: validate PPLL in crtc fixup
drm/radeon: work around KMS modeset limitations in PLL allocation (v2)
drm/radeon: make non-DP PPLL sharing more robust
drm/radeon: store the encoder in the radeon_crtc
drm/radeon: rework crtc pll setup to better support PPLL sharing
...
Host bridge hotplug
- Protect acpi_pci_drivers and acpi_pci_roots (Taku Izumi)
- Clear host bridge resource info to avoid issue when releasing (Yinghai Lu)
- Notify acpi_pci_drivers when hot-plugging host bridges (Jiang Liu)
- Use standard list ops for acpi_pci_drivers (Jiang Liu)
Device hotplug
- Use pci_get_domain_bus_and_slot() to close hotplug races (Jiang Liu)
- Remove fakephp driver (Bjorn Helgaas)
- Fix VGA ref count in hotplug remove path (Yinghai Lu)
- Allow acpiphp to handle PCIe ports without native hotplug (Jiang Liu)
- Implement resume regardless of pciehp_force param (Oliver Neukum)
- Make pci_fixup_irqs() work after init (Thierry Reding)
Miscellaneous
- Add pci_pcie_type(dev) and remove pci_dev.pcie_type (Yijing Wang)
- Factor out PCI Express Capability accessors (Jiang Liu)
- Add pcibios_window_alignment() so powerpc EEH can use generic resource assignment (Gavin Shan)
- Make pci_error_handlers const (Stephen Hemminger)
- Cleanup drivers/pci/remove.c (Bjorn Helgaas)
- Improve Vendor-Specific Extended Capability support (Bjorn Helgaas)
- Use standard list ops for bus->devices (Bjorn Helgaas)
- Avoid kmalloc in pci_get_subsys() and pci_get_class() (Feng Tang)
- Reassign invalid bus number ranges (Intel DP43BF workaround) (Yinghai Lu)
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Merge tag 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI changes from Bjorn Helgaas:
"Host bridge hotplug
- Protect acpi_pci_drivers and acpi_pci_roots (Taku Izumi)
- Clear host bridge resource info to avoid issue when releasing
(Yinghai Lu)
- Notify acpi_pci_drivers when hot-plugging host bridges (Jiang Liu)
- Use standard list ops for acpi_pci_drivers (Jiang Liu)
Device hotplug
- Use pci_get_domain_bus_and_slot() to close hotplug races (Jiang
Liu)
- Remove fakephp driver (Bjorn Helgaas)
- Fix VGA ref count in hotplug remove path (Yinghai Lu)
- Allow acpiphp to handle PCIe ports without native hotplug (Jiang
Liu)
- Implement resume regardless of pciehp_force param (Oliver Neukum)
- Make pci_fixup_irqs() work after init (Thierry Reding)
Miscellaneous
- Add pci_pcie_type(dev) and remove pci_dev.pcie_type (Yijing Wang)
- Factor out PCI Express Capability accessors (Jiang Liu)
- Add pcibios_window_alignment() so powerpc EEH can use generic
resource assignment (Gavin Shan)
- Make pci_error_handlers const (Stephen Hemminger)
- Cleanup drivers/pci/remove.c (Bjorn Helgaas)
- Improve Vendor-Specific Extended Capability support (Bjorn
Helgaas)
- Use standard list ops for bus->devices (Bjorn Helgaas)
- Avoid kmalloc in pci_get_subsys() and pci_get_class() (Feng Tang)
- Reassign invalid bus number ranges (Intel DP43BF workaround)
(Yinghai Lu)"
* tag 'for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (102 commits)
PCI: acpiphp: Handle PCIe ports without native hotplug capability
PCI/ACPI: Use acpi_driver_data() rather than searching acpi_pci_roots
PCI/ACPI: Protect acpi_pci_roots list with mutex
PCI/ACPI: Use acpi_pci_root info rather than looking it up again
PCI/ACPI: Pass acpi_pci_root to acpi_pci_drivers' add/remove interface
PCI/ACPI: Protect acpi_pci_drivers list with mutex
PCI/ACPI: Notify acpi_pci_drivers when hot-plugging PCI root bridges
PCI/ACPI: Use normal list for struct acpi_pci_driver
PCI/ACPI: Use DEVICE_ACPI_HANDLE rather than searching acpi_pci_roots
PCI: Fix default vga ref_count
ia64/PCI: Clear host bridge aperture struct resource
x86/PCI: Clear host bridge aperture struct resource
PCI: Stop all children first, before removing all children
Revert "PCI: Use hotplug-safe pci_get_domain_bus_and_slot()"
PCI: Provide a default pcibios_update_irq()
PCI: Discard __init annotations for pci_fixup_irqs() and related functions
PCI: Use correct type when freeing bus resource list
PCI: Check P2P bridge for invalid secondary/subordinate range
PCI: Convert "new_id"/"remove_id" into generic pci_bus driver attributes
xen-pcifront: Use hotplug-safe pci_get_domain_bus_and_slot()
...
There are two ways of overriding ACPI tables now, both need to taint the
the kernel.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Link: http://lkml.kernel.org/r/1349043837-22659-6-git-send-email-trenn@suse.de
Cc: Len Brown <lenb@kernel.org>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Previous patches stored ACPI tables provided via initrd in a memblock reserved
area.
If a table is loaded and the table type of an initrd provided one matches,
the one from initrd is prefered.
In case of a SSDT table, the OEM table id also has to match.
ACPI tables can be loaded at boot time (static table pointers in XSDT),
but also dynamically any time later via ASL commands load() or loadTable().
The override mechanism always works.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Link: http://lkml.kernel.org/r/1349043837-22659-5-git-send-email-trenn@suse.de
Cc: Len Brown <lenb@kernel.org>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
A later patch will compare them with ACPI tables that get loaded at boot or
runtime and if criteria match, a stored one is loaded.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Link: http://lkml.kernel.org/r/1349043837-22659-4-git-send-email-trenn@suse.de
Cc: Len Brown <lenb@kernel.org>
Cc: Robert Moore <robert.moore@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
The ACPI BGRT driver accesses the BIOS logo image when it initializes.
However, ACPI 5.0 (which introduces the BGRT) recommends putting the
logo image in EFI boot services memory, so that the OS can reclaim that
memory. Production systems follow this recommendation, breaking the
ACPI BGRT driver.
Move the bulk of the BGRT code to run during a new EFI late
initialization phase, which occurs after switching EFI to virtual mode,
and after initializing ACPI, but before freeing boot services memory.
Copy the BIOS logo image to kernel memory at that point, and make it
accessible to the BGRT driver. Rework the existing ACPI BGRT driver to
act as a simple wrapper exposing that image (and the properties from the
BGRT) via sysfs.
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Link: http://lkml.kernel.org/r/93ce9f823f1c1f3bb88bdd662cce08eee7a17f5d.1348876882.git.josh@joshtriplett.org
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
The _OSC method may exist in module level code,
so it must be called after ACPI_FULL_INITIALIZATION
On some new platforms with Zero-Power-Optical-Disk-Drive (ZPODD)
support, this fix is necessary to save power.
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Tested-by: Aaron Lu <aaron.lu@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Cc: stable@vger.kernel.org
This patch changes the implementation of acpi_pci_find_root().
We can access acpi_pci_root without scanning acpi_pci_roots list.
If hostbridge hotplug is supported, acpi_pci_roots list will be
protected by mutex. We should not access acpi_pci_roots list
if preventable to lessen deadlock risk.
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This patch changes the function signature of walk_root_bridge().
We can omit _STA, _SEG, and _BBN evaluation by passing not acpi_handle
but acpi_pci_root. Now that acpi_pci_slot_add() which is the only
caller of walk_root_bridge() gets acpi_pci_root structure, changing
signature of walk_root_bridge() is reasonable.
[bhelgaas: changelog]
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This patch changes .add/.remove interfaces of acpi_pci_driver.
In the current implementation acpi_handle is passed as a parameter
of .add/.remove interface. However, the acpi_pci_root structure
contains more useful information than just the acpi_handle. This
enables us to avoid some useless lookups in each acpi_pci_driver.
Note: This changes interfaces used by acpi_pci_register_driver(), an
exported symbol. This patch updates all the in-kernel users, but any
out-of-kernel acpi_pci_register_driver() users will need updates.
[bhelgaas: changelog]
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Use mutex to protect global acpi_pci_drivers list against PCI
host bridge hotplug operations.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Use normal list for struct acpi_pci_driver to simplify code.
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
* pm-cpuidle:
cpuidle: rename function name "__cpuidle_register_driver", v2
cpuidle: remove some empty lines
cpuidle / ACPI : move cpuidle_device field out of the acpi_processor_power structure
This function is used to update the cooling state of
all the cooling devices that are bound to an active trip point.
This will be used for passive cooling as well, in the future patches.
as both active and passive cooling can share the same algorithm,
which is
1. if the temperature is higher than a trip point,
a. if the trend is THERMAL_TREND_RAISING, use higher cooling
state for this trip point
b. if the trend is THERMAL_TREND_DROPPING, use lower cooling
state for this trip point
2. if the temperature is lower than a trip point, use lower
cooling state for this trip point.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Eduardo Valentin <eduardo.valentin@ti.com>
Remove tc1/tc2 in generic thermal layer.
.get_trend() callback starts to take effect from this patch.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Valentin, Eduardo <eduardo.valentin@ti.com>
According to ACPI spec, tc1 and tc2 are used by OSPM
to anticipate the temperature trends.
We introduced the same concept to the generic thermal layer
for passive cooling, but now it seems that these values
are hard to be used on other platforms.
So We introduce .get_trend() as a more general solution.
For the platform thermal drivers that have their own way to
anticipate the temperature trends, they should provide
their own .get_trend() callback.
Or else, we will calculate the temperature trends by simply
comparing the current temperature and the cached previous
temperature reading.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Valentin, Eduardo <eduardo.valentin@ti.com>
set upper and lower limits when binding
a thermal cooling device to a thermal zone device.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Eduardo Valentin <eduardo.valentin@ti.com>
A USB port's position and connectability can't be identified on some boards
via USB hub registers. ACPI _UPC and _PLD can help to resolve this issue
and so it is necessary to bind USB with ACPI. This patch is to allow ACPI
binding with USB-3.0 hub.
Current ACPI only can bind one struct-device to one ACPI device node.
This can not work with USB-3.0 hub, because the USB-3.0 hub has two logical
devices. Each works for USB-2.0 and USB-3.0 devices. In the Linux USB subsystem,
those two logical hubs are treated as two seperate devices that have two struct
devices. But in the ACPI DSDT, these two logical hubs share one ACPI device
node. So there is a requirement to bind multi struct-devices to one ACPI
device node. This patch is to resolve such problem.
Following is the ACPI device nodes' description under xhci hcd.
Device (XHC)
Device (RHUB)
Device (HSP1)
Device (HSP2)
Device (HSP3)
Device (HSP4)
Device (SSP1)
Device (SSP2)
Device (SSP3)
Device (SSP4)
Topology in the Linux
device XHC
USB-2.0 logical hub USB-3.0 logical hub
HSP1 SSP1
HSP2 SSP2
HSP3 SSP3
HSP4 SSP4
This patch also modifies the output of /proc/acpi/wakeup. One ACPI node
can be associated with multiple devices:
XHC S4 *enabled pci:0000:00:14.0
RHUB S0 disabled usb:usb1
disabled usb:usb2
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Acked-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Merge/remove duplicate code in the root table resize functions
One function is external, the other is internal. Lv Zheng,
ACPICA BZ 846:
https://acpica.org/bugzilla/show_bug.cgi?id=846
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This patch is on top of the ACPICA 20120816 release, which implemented
a native way to decode PLD buffer, so use it instead of leting upper
level users do the decoding.
v2: Modify the check for PLD buffer length to reject buffers whose
length < 16
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
_PLD (Physical Location of Device) returns a bit-packed buffer that
is difficult to parse. This change adds a new interface,
AcpiDecodePldBuffer that parses the buffer into a more usable
local struct. Also adds macros to both get and set individual
fields within the packed _PLD buffer. Adds a new include file,
acbuffer.h - which will be expanded to add structs for other
ACPI names that return buffers. ACPICA BZ 954.
Emit (in comments) the decoded contents of a static _PLD buffer
in order to improve comprehension of this bit-packed buffer.
Add multi-endian support to the _PLD decode routine. Deploy the
multi-endian macros to extract data from the _PLD buffer.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
The gpe_register_info argument is no longer needed, reduce it to
make code simpler.
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Cleanup output for Processor(). Length is a byte, not a word.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Add additional debug info to assist with GPE debugging.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This change adds a new _OSI string, "Windows 2012" for both Windows 8
and Windows Server 2012.
From Microsoft document "How to Identify the Windows Version in ACPI
by Using _OSI", July 13, 2012.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Split utxface.c to improve modularity and reduce file size.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Allows constructs like this:
If (XXXX)
Scope (\)
...
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This is a follow on for commmit 3f6f49c7 "ACPI: delete _GTS/_BFS support"
to do more cleanup.
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
The standard video events may be overloaded for device specific
purposes. For example AMD ACPI interface overloads
ACPI_VIDEO_NOTIFY_PROBE (0x81) to signal AMD-specific events. In such
cases we don't want to send the keypress (KEY_SWITCHVIDEOMODE) to the
userspace because the user did not press the mode switch key (the
spurious keypress confuses the DE which usually changes the
display configuration and messes up a dual-screen setup).
This patch gives the handlers the chance to examine the event and
block the keypress if the event is device specific.
v2: refactor as suggested by Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Luca Tettamanti <kronos.it@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Currently we have the cpuidle_device field in the acpi_processor_power structure.
This adds a dependency between processor.h and cpuidle.h
Although it is not a real problem, removing this dependency has the benefit of
separating a bit more the cpuidle code from the rest of the acpi code.
Also, the compilation should be a bit improved because we do no longer
include cpuidle.h in processor.h. The preprocessor was generating 30418 loc
and with this patch it generates 30256 loc for processor_thermal.c, a file
which is not concerned at all by cpuidle, like processor_perflib.c and
processor_throttling.c.
That may sound ridiculous, but "small streams make big rivers" :P
This patch moves this field into a static global per cpu variable like what is
done in the intel_idle driver.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
* pm-cpufreq:
cpufreq: OMAP: remove loops_per_jiffy recalculate for smp
sections: fix section conflicts in drivers/cpufreq
cpufreq: conservative: update frequency when limits are relaxed
cpufreq / ondemand: update frequency when limits are relaxed
cpufreq: Add a generic cpufreq-cpu0 driver
PM / OPP: Initialize OPP table from device tree
ARM: add cpufreq transiton notifier to adjust loops_per_jiffy for smp
cpufreq: Remove support for hardware P-state chips from powernow-k8
acpi-cpufreq: Add compatibility for legacy AMD cpb sysfs knob
acpi-cpufreq: Add support for disabling dynamic overclocking
ACPI: Add fixups for AMD P-state figures
powernow-k8: delay info messages until initialization has succeeded
cpufreq: Add warning message to powernow-k8
acpi-cpufreq: Add quirk to disable _PSD usage on all AMD CPUs
acpi-cpufreq: Add support for modern AMD CPUs
cpufreq / powernow-k8: Fixup missing _PSS objects message
PM / cpufreq: Initialise the cpu field during conservative governor start
* pm-cpuidle:
ACPI / processor: remove pointless variable initialization
ACPI / processor: remove unused function parameter
cpuidle / ACPI : remove power from acpi_processor_cx structure
PM / cpuidle: Make ladder governor use the "disabled" state flag
Honor state disabling in the cpuidle ladder governor
The 'errata' variable is a global variable which is set to zero,
no need to do that with a memset in the init function.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
The 'device' parameter is not used neither in acpi_processor_power_init
and acpi_processor_power_exit. This patch removes it.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
commit a606dac368 adds support to link
devices which have _PRx, if a device does not have _PRx, a warning
message will be printed.
This commit is for ZPODD on Intel ZPODD capable platforms, on other
platforms, it has no problem if there is no power resource for this
device, so a warning here is not appropriate, change it to debug.
Reported-by: Borislav Petkov <bp@amd64.org>
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Commit 0090def("ACPI: Add interface to register/unregister device
to/from power resources") used resource_lock to protect the devices list
that relies on power resource. It caused a mutex dead lock, as below
acpi_power_on ---> lock resource_lock
__acpi_power_on
acpi_power_on_device
acpi_power_get_inferred_state
acpi_power_get_list_state ---> lock resource_lock
This patch adds a new mutex "devices_lock" to protect the devices list
and calls acpi_power_on_device in acpi_power_on, instead of
__acpi_power_on, after the resource_lock is released.
[rjw: Changed data type of a boolean variable to bool.]
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
It turns out that there are ACPI BIOSes defining device objects with
_PSx and without either _PSC or _PRx. For devices corresponding to
those ACPI objetcs __acpi_bus_get_power() returns ACPI_STATE_UNKNOWN
and their initial power states are regarded as unknown as a result.
If such a device is a parent of another power-manageable device, the
child cannot be put into a low-power state through ACPI, because
__acpi_bus_set_power() refuses to change power states of devices
whose parents' power states are unknown.
To work around this problem, observe that the ACPI power state of
a device cannot be higher-power (lower-number) than the power state
of its parent. Thus, if the device's _PSC method or the
configuration of its power resources indicates that the device is
in D0, the device's parent has to be in D0 as well. Consequently,
if the parent's power state is unknown when we've just learned that
its child's power state is D0, we can safely set the parent's
power.state field to ACPI_STATE_D0.
Tested-by: Aaron Lu <aaron.lu@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Some AMD systems may round the frequencies in ACPI tables to 100MHz
boundaries. We can obtain the real frequencies from MSRs, so add a quirk
to fix these frequencies up on AMD systems.
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Remove the unused power field from struct struct acpi_processor_cx.
[rjw: Modified changelog.]
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Alex writes:
"This is the current set of radeon fixes for 3.6. Nothing too major.
Highlights:
- fix vbios fetch on pure uefi systems
- fix vbios fetch on thunderbolt systems
- MSAA fixes
- lockup timeout fix
- modesetting fix"
* 'drm-fixes-3.6' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon/ss: use num_crtc rather than hardcoded 6
Revert "drm/radeon: fix bo creation retry path"
drm/radeon: split ATRM support out from the ATPX handler (v3)
drm/radeon: convert radeon vfct code to use acpi_get_table_with_size
ACPI: export symbol acpi_get_table_with_size
drm/radeon: implement ACPI VFCT vbios fetch (v3)
drm/radeon/kms: extend the Fujitsu D3003-S2 board connector quirk to cover later silicon stepping
drm/radeon: fix checking of MSAA renderbuffers on r600-r700
drm/radeon: allow CMASK and FMASK in the CS checker on r600-r700
drm/radeon: init lockup timeout on ring init
drm/radeon: avoid turning off spread spectrum for used pll
We need it in the radeon drm module to fetch
and verify the vbios image on UEFI systems.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
* Fix for two recent regressions in the generic PM domains framework.
* Revert of a commit that introduced a resume regression and is conceptually
incorrect in my opinion.
* Fix for a return value in pcc-cpufreq.c from Julia Lawall.
* RTC wakeup signaling fix from Neil Brown.
* Suppression of compiler warnings for CONFIG_PM_SLEEP unset in ACPI,
platform/x86 and TPM drivers.
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Merge tag 'pm-for-3.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael J. Wysocki:
- Fix for two recent regressions in the generic PM domains framework.
- Revert of a commit that introduced a resume regression and is
conceptually incorrect in my opinion.
- Fix for a return value in pcc-cpufreq.c from Julia Lawall.
- RTC wakeup signaling fix from Neil Brown.
- Suppression of compiler warnings for CONFIG_PM_SLEEP unset in ACPI,
platform/x86 and TPM drivers.
* tag 'pm-for-3.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
tpm_tis / PM: Fix unused function warning for CONFIG_PM_SLEEP
platform / x86 / PM: Fix unused function warnings for CONFIG_PM_SLEEP
ACPI / PM: Fix unused function warnings for CONFIG_PM_SLEEP
Revert "NMI watchdog: fix for lockup detector breakage on resume"
PM: Make dev_pm_get_subsys_data() always return 0 on success
drivers/cpufreq/pcc-cpufreq.c: fix error return code
RTC: Avoid races between RTC alarm wakeup and suspend.
According to compiler warnings, several suspend/resume functions
in ACPI drivers are not used for CONFIG_PM_SLEEP unset, so add
#ifdefs to prevent them from being built in that case.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
In commit 99b725084 "ACPI processor hotplug: Delay acpi_processor_start()
call for hotplugged cores", acpi_processor_hotplug(pr) was wrongly replaced
by acpi_processor_cst_has_changed() inside the acpi_cpu_soft_notify(). This
patch will restore it back, fixing the tick_broadcast_mask regression:
https://lkml.org/lkml/2012/7/30/169
Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Thomas Renninger <trenn@suse.de>
Cc: <stable@vger.kernel.org> # 3.3+
Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl>
Reviewed-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Otherwise you could run into:
WARN_ON in numa_register_memblks(), because node_possible_map is zero
References: https://bugzilla.novell.com/show_bug.cgi?id=757888
On this machine (ProLiant ML570 G3) the SRAT table contains:
- No processor affinities
- One memory affinity structure (which is set disabled)
CC: Per Jessen <per@opensuse.org>
CC: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
If acpi_pci_osc_support() fails for the given flags, it doesn't make
sense to call acpi_pci_osc_control_set() down the road for the same
flags, because it will certainly fail too. Moreover, problem
diagnostics is then harder, because it is not too easy to identify
the reason of the _OSC failure in those cases.
For this reason, check the status returned by acpi_pci_osc_support()
for PCIe support flags and do not attempt to execute
acpi_pci_osc_control_set() for those flags and print a message if
it's "failure". For compatibility with the existing code, disable
ASPM in that case too.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
_GTS and _BFS were added to the suspend/resume flow
in the ACPI 2.0 specification.
Linux dutifully implemented _GTS and _BFS.
We discovered that it was rarely seen in systems
in the field. Further, some of those systems had
AML so bogus that it could never work -- proof that
no other operating system supports _GTS and _BFS.
So we made _GTS and _BFS optional via modparam,
and disabled them by default.
But we've had to complicate some code to keep
this support in the kernel, as these methods are defined
to be evaluated very close to sleep entry and exit.
Indeed, no other AML is ever evaluated with interrupts off.
We have submitted a proposal for _GTS and _BFS
to be officially removed from the ACPI specification
on the next revision. Here we remove it from Linux.
Signed-off-by: Len Brown <len.brown@intel.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Pull x86 platform driver updates from Matthew Garrett:
"Nothing overly dramatic here - improved support for the Classmate,
some random small fixes and a rework of backlight management to deal
with some of the more awkward cases."
* 'linux-next' of git://cavan.codon.org.uk/platform-drivers-x86:
thinkpad_acpi: Free hotkey_keycode_map after unregistering tpacpi_inputdev
thinkpad_acpi: Fix a memory leak during module exit
thinkpad_acpi: Flush the workqueue before freeing tpacpi_leds
dell-laptop: Add 6 machines to touchpad led quirk
ACER: Fix Smatch double-free issue
ACER: Fix up sparse warning
asus-nb-wmi: add some video toggle keys
asus-nb-wmi: add wapf quirk for ASUS machines
classmate-laptop: Fix extra keys hardware id.
classmate-laptop: Add support for Classmate V4 accelerometer.
asus-wmi: enable resume on lid open
asus-wmi: control backlight power through WMI, not ACPI
samsung-laptop: support R40/R41
acpi/video_detect: blacklist samsung x360
samsung-laptop: X360 ACPI backlight device is broken
drivers-platform-x86: use acpi_video_dmi_promote_vendor()
acpi: add a way to promote/demote vendor backlight drivers
ACER: Add support for accelerometer sensor
asus-wmi: use ASUS_WMI_METHODID_DSTS2 as default DSTS ID.
On Samsung X360, the BIOS will set a flag (VDRV) if the generic
ACPI backlight device is used. This flag will definitively break
the backlight interface (even the vendor interface) untill next
reboot. It's why we should prevent video.ko from being used here
and we can't rely on a later call to acpi_video_unregister().
Signed-off-by: Corentin Chary <corentin.chary@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Instead of adding a big blacklist in video_detect.c to set
ACPI_VIDEO_BACKLIGHT_DMI_VENDOR correctly, let external modules
promote or demote themselves when they know the generic video
module won't work.
Currently drivers where using acpi_video_unregister() directly
but:
- That didn't respect any acpi_backlight=[video|vendor] parameter
provided by the user.
- Any later call to acpi_video_register() would still re-load the
generic video module (and some gpu drivers are doing that).
This patch fix those two issues.
Signed-off-by: Corentin Chary <corentin.chary@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
...both give the number of chars in the string
without the '\0', as strncmp() wants,
but sizeof() is compile-time.
Reported-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Pavel Vasilyev <pavel@pavlinux.ru>
Signed-off-by: Len Brown <len.brown@intel.com>
If CONFIG_ACPI_SLEEP is unset, the compiler complains that
pwr_btn_event_pending is defined but not used. To silence the
warning, move the definition of pwr_btn_event_pending under an
appropriate #ifdef.
Reported-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: Paul E. McKenney <paul.mckenney@linaro.org>
Signed-off-by: Len Brown <len.brown@intel.com>
Pull ACPI & power management update from Len Brown:
"Re-write of the turbostat tool.
lower overhead was necessary for measuring very large system when
they are very idle.
IVB support in intel_idle
It's what I run on my IVB, others should be able to also:-)
ACPICA core update
We have found some bugs due to divergence between Linux and the
upstream ACPICA base. Most of these patches are to reduce that
divergence to reduce the risk of future bugs.
Some cpuidle updates, mostly for non-Intel
More will be coming, as they depend on this part.
Some thermal management changes needed by non-ACPI systems.
Some _OST (OS Status Indication) updates for hot ACPI hot-plug."
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (51 commits)
Thermal: Documentation update
Thermal: Add Hysteresis attributes
Thermal: Make Thermal trip points writeable
ACPI/AC: prevent OOPS on some boxes due to missing check power_supply_register() return value check
tools/power: turbostat: fix large c1% issue
tools/power: turbostat v2 - re-write for efficiency
ACPICA: Update to version 20120711
ACPICA: AcpiSrc: Fix some translation issues for Linux conversion
ACPICA: Update header files copyrights to 2012
ACPICA: Add new ACPI table load/unload external interfaces
ACPICA: Split file: tbxface.c -> tbxfload.c
ACPICA: Add PCC address space to space ID decode function
ACPICA: Fix some comment fields
ACPICA: Table manager: deploy new firmware error/warning interfaces
ACPICA: Add new interfaces for BIOS(firmware) errors and warnings
ACPICA: Split exception code utilities to a new file, utexcep.c
ACPI: acpi_pad: tune round_robin_time
ACPICA: Update to version 20120620
ACPICA: Add support for implicit notify on multiple devices
ACPICA: Update comments; no functional change
...
Two bits were appended to the end of the bitfield
list in struct scsi_device. Resolve that conflict
by including both bits.
Conflicts:
include/scsi/scsi_device.h
With commit 6503e5df08,
the value of /sys/class/thermal/thermal_zoneX/mode has been changed
from user/kernel to enabled/disabled.
Update the documentation so that users won't be confused.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Some of the thermal drivers using the Generic Thermal Framework
require (all/some) trip points to be writeable. This patch makes
the trip point temperatures writeable on a per-trip point basis,
and modifies the required function call in thermal.c. This patch
also updates the Documentation to reflect the new change.
Signed-off-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Host bridge hotplug
- Add MMCONFIG support for hot-added host bridges (Jiang Liu)
Device hotplug
- Move fixups from __init to __devinit (Sebastian Andrzej Siewior)
- Call FINAL fixups for hot-added devices, too (Myron Stowe)
- Factor out generic code for P2P bridge hot-add (Yinghai Lu)
- Remove all functions in a slot, not just those with _EJx (Amos Kong)
Dynamic resource management
- Track bus number allocation (struct resource tree per domain) (Yinghai Lu)
- Make P2P bridge 1K I/O windows work with resource reassignment (Bjorn Helgaas, Yinghai Lu)
- Disable decoding while updating 64-bit BARs (Bjorn Helgaas)
Power management
- Add PCIe runtime D3cold support (Huang Ying)
Virtualization
- Add VFIO infrastructure (ACS, DMA source ID quirks) (Alex Williamson)
- Add quirks for devices with broken INTx masking (Jan Kiszka)
Miscellaneous
- Fix some PCI Express capability version issues (Myron Stowe)
- Factor out some arch code with a weak, generic, pcibios_setup() (Myron Stowe)
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Merge tag 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI changes from Bjorn Helgaas:
"Host bridge hotplug:
- Add MMCONFIG support for hot-added host bridges (Jiang Liu)
Device hotplug:
- Move fixups from __init to __devinit (Sebastian Andrzej Siewior)
- Call FINAL fixups for hot-added devices, too (Myron Stowe)
- Factor out generic code for P2P bridge hot-add (Yinghai Lu)
- Remove all functions in a slot, not just those with _EJx (Amos
Kong)
Dynamic resource management:
- Track bus number allocation (struct resource tree per domain)
(Yinghai Lu)
- Make P2P bridge 1K I/O windows work with resource reassignment
(Bjorn Helgaas, Yinghai Lu)
- Disable decoding while updating 64-bit BARs (Bjorn Helgaas)
Power management:
- Add PCIe runtime D3cold support (Huang Ying)
Virtualization:
- Add VFIO infrastructure (ACS, DMA source ID quirks) (Alex
Williamson)
- Add quirks for devices with broken INTx masking (Jan Kiszka)
Miscellaneous:
- Fix some PCI Express capability version issues (Myron Stowe)
- Factor out some arch code with a weak, generic, pcibios_setup()
(Myron Stowe)"
* tag 'for-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (122 commits)
PCI: hotplug: ensure a consistent return value in error case
PCI: fix undefined reference to 'pci_fixup_final_inited'
PCI: build resource code for M68K architecture
PCI: pciehp: remove unused pciehp_get_max_lnk_width(), pciehp_get_cur_lnk_width()
PCI: reorder __pci_assign_resource() (no change)
PCI: fix truncation of resource size to 32 bits
PCI: acpiphp: merge acpiphp_debug and debug
PCI: acpiphp: remove unused res_lock
sparc/PCI: replace pci_cfg_fake_ranges() with pci_read_bridge_bases()
PCI: call final fixups hot-added devices
PCI: move final fixups from __init to __devinit
x86/PCI: move final fixups from __init to __devinit
MIPS/PCI: move final fixups from __init to __devinit
PCI: support sizing P2P bridge I/O windows with 1K granularity
PCI: reimplement P2P bridge 1K I/O windows (Intel P64H2)
PCI: disable MEM decoding while updating 64-bit MEM BARs
PCI: leave MEM and IO decoding disabled during 64-bit BAR sizing, too
PCI: never discard enable/suspend/resume_early/resume fixups
PCI: release temporary reference in __nv_msi_ht_cap_quirk()
PCI: restructure 'pci_do_fixups()'
...
In the ac.c, power_supply_register()'s return value is not checked.
As a result, the driver's add() ops may return success
even though the device failed to initialize.
For example, some BIOS may describe two ACADs in the same DSDT.
The second ACAD device will fail to register,
but ACPI driver's add() ops returns sucessfully.
The ACPI device will receive ACPI notification and cause OOPS.
https://bugzilla.redhat.com/show_bug.cgi?id=772730
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>
* pm-acpi: (24 commits)
olpc-xo15-sci: Use struct dev_pm_ops for power management
ACPI / PM: Drop PM callbacks from the ACPI bus type
ACPI / PM: Drop legacy driver PM callbacks that are not used any more
ACPI / PM: Do not execute legacy driver PM callbacks
acpi_power_meter: Use struct dev_pm_ops for power management
fujitsu-tablet: Use struct dev_pm_ops for power management
classmate-laptop: Use struct dev_pm_ops for power management
xo15-ebook: Use struct dev_pm_ops for power management
toshiba_bluetooth: Use struct dev_pm_ops for power management
panasonic-laptop: Use struct dev_pm_ops for power management
sony-laptop: Use struct dev_pm_ops for power management
hp_accel: Use struct dev_pm_ops for power management
toshiba_acpi: Use struct dev_pm_ops for power management
ACPI: Use struct dev_pm_ops for power management in the SBS driver
ACPI: Use struct dev_pm_ops for power management in the power driver
ACPI: Use struct dev_pm_ops for power management in the button driver
ACPI: Use struct dev_pm_ops for power management in the battery driver
ACPI: Use struct dev_pm_ops for power management in the AC driver
ACPI: Use struct dev_pm_ops for power management in processor driver
ACPI: Use struct dev_pm_ops for power management in the thermal driver
...
Remove the latency_ticks field as it is not used.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Fixes issues like this:
i_aSL -> iASL
00-7_f -> 00-7F
local_fADT -> local_FADT
execute_oSI -> execute_OSI
Also, in function headers, the parameters are now translated to
lower case (with underscores if necessary.)
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Add acpi_load_table and acpi_unload_parent_table to support
host-directed dynamic table load/unload. Intended to support
hotplug addition and removal of SSDTs.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Split out the table load functions in preparation for addition
of new interfaces.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
ACPI 5.0 added PCC space ID.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
No functional change. Fixes some typos and linux divergences.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Emit firmware error/warning messages where appropriate for table
and FADT errors.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
These new interfaces will be deployed across ACPICA in order to
point a finger directly at any detected BIOS issues -- such as
issues with ACPI tables, etc.
https://www.acpica.org/bugzilla/show_bug.cgi?id=843
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Simplifies sharing of these functions.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Pull ACPI patch from Len Brown.
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
ACPICA: Fix possible fault in return package object repair code
This fixes a regression preventing the ACPI cpufreq driver from loading on some
systems where it worked previously without any problems.
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Merge tag 'cpufreq-for-3.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull cpufreq fix from Rafael Wysocki:
"This fixes a regression preventing the ACPI cpufreq driver from
loading on some systems where it worked previously without any
problems."
* tag 'cpufreq-for-3.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq / ACPI: Fix not loading acpi-cpufreq driver regression
In an effort to be fair to bound processes,
acpi_pad periodically moves its forced-idle threads.
The default interval for moving the threads is 10 seconds.
Measurements show that reducing this to 1 second has no
power or performance impact, so reduce default to 1 second.
Signed-off-by: Len Brown <len.brown@intel.com>
Fixes a problem that can occur when a lone package object is
wrapped with an outer package object in order to conform to
the ACPI specification. Can affect these predefined names:
_ALR,_MLS,_PSS,_TRT,_TSS,_PRT,_HPX,_DLM,_CSD,_PSD,_TSD
https://bugzilla.kernel.org/show_bug.cgi?id=44171
This problem was introduced in 3.4-rc1 by commit
6a99b1c94d
(ACPICA: Object repair code: Support to add Package wrappers)
Reported-by: Vlastimil Babka <caster@gentoo.org>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Cc: <stable@vger.kernel.org> # 3.4
Signed-off-by: Len Brown <len.brown@intel.com>
Adds basic support to allow multiple devices to be implicitly
notified.
This change is partially derived from original commit 981858b("ACPI /
ACPICA: Implicit notify for multiple devices") by Rafael.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Jung-uk Kim <jkim@freebsd.org>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Cleanup a couple of comments.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Only used for iASL and AcpiExec.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
For each predefined name, emit a short description within
a comment.
https://www.acpica.org/bugzilla/show_bug.cgi?id=959
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Many firmwares have a common register definition bug where 8-bit
access width is specified for a 32-bit register. Ideally this should
be fixed in the BIOS, but earlier versions of the kernel did not
complain, so fix that up silently.
This closes kernel bug #43282:
https://bugzilla.kernel.org/show_bug.cgi?id=43282
Signed-off-by: Jean Delvare <jdelvare@suse.de>
Acked-by: Huang Ying <ying.huang@intel.com>
Acked-by: Gary Hade <garyhade@us.ibm.com>
Cc: stable@vger.kernel.org [3.4+]
Signed-off-by: Len Brown <len.brown@intel.com>
Commit d640113fe8 introduced a regression on SMP
systems where the processor core with ACPI id zero is disabled
(typically should be the case because of hyperthreading).
The regression got spread through stable kernels.
On 3.0.X it got introduced via 3.0.18.
Such platforms may be rare, but do exist.
Look out for a disabled processor with acpi_id 0 in dmesg:
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x10] disabled)
This problem has been observed on a:
HP Proliant BL280c G6 blade
This patch restricts the introduced workaround to platforms
with nr_cpu_ids <= 1.
Signed-off-by: Thomas Renninger <trenn@suse.de>
CC: stable@vger.kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
This is an old suspend/resume lockup fix:
commit 2780cc4660e1
Author: Len Brown <len.brown@intel.com>
Date: Thu Dec 23 13:43:30 2004 -0500
[ACPI] Fix suspend/resume lockup issue
by leaving Bus Master Arbitration enabled.
The ACPI spec mandates it be disabled only for C3.
http://bugzilla.kernel.org/show_bug.cgi?id=3599
Signed-off-by: David Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
The bug snuck back in in commit 2feec47d4c (ACPICA: ACPI 5: Support
for new FADT SleepStatus, SleepControl registers, 2012-02-14),
presumably by copy/pasting a copy of the code without that fix for the
legacy case.
On affected machines, after that commit, the machine locks up hard on
resume from suspend. The same fix as seven years ago still works.
Addresses <https://bugzilla.kernel.org/show_bug.cgi?id=43641>.
Reported-bisected-and-tested-by: Octavio Alvarez <alvarezp@alvarezp.com>
Reported-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
On certain bios, resume hangs if cpus are allowed to enter idle states
during suspend [1].
This was fixed in apci idle driver [2].But intel_idle driver does not
have this fix. Thus instead of replicating the fix in both the idle
drivers, or in more platform specific idle drivers if needed, the
more general cpuidle infrastructure could handle this.
A suspend callback in cpuidle_driver could handle this fix. But
a cpuidle_driver provides only basic functionalities like platform idle
state detection capability and mechanisms to support entry and exit
into CPU idle states. All other cpuidle functions are found in the
cpuidle generic infrastructure for good reason that all cpuidle
drivers, irrepective of their platforms will support these functions.
One option therefore would be to register a suspend callback in cpuidle
which handles this fix. This could be called through a PM_SUSPEND_PREPARE
notifier. But this is too generic a notfier for a driver to handle.
Also, ideally the job of cpuidle is not to handle side effects of suspend.
It should expose the interfaces which "handle cpuidle 'during' suspend"
or any other operation, which the subsystems call during that respective
operation.
The fix demands that during suspend, no cpus should be allowed to enter
deep C-states. The interface cpuidle_uninstall_idle_handler() in cpuidle
ensures that. Not just that it also kicks all the cpus which are already
in idle out of their idle states which was being done during cpu hotplug
through a CPU_DYING_FROZEN callbacks.
Now the question arises about when during suspend should
cpuidle_uninstall_idle_handler() be called. Since we are dealing with
drivers it seems best to call this function during dpm_suspend().
Delaying the call till dpm_suspend_noirq() does no harm, as long as it is
before cpu_hotplug_begin() to avoid race conditions with cpu hotpulg
operations. In dpm_suspend_noirq(), it would be wise to place this call
before suspend_device_irqs() to avoid ugly interactions with the same.
Ananlogously, during resume.
References:
[1] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/674075.
[2] http://marc.info/?l=linux-pm&m=133958534231884&w=2
Reported-and-tested-by: Dave Hansen <dave@linux.vnet.ibm.com>
Signed-off-by: Preeti U Murthy <preeti@linux.vnet.ibm.com>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
When the system is booted with some cpus offline, the idle
driver is not initialized. When a cpu is set online, the
acpi code call the intel idle init function. Unfortunately
this code introduce a dependency between intel_idle and acpi.
This patch is intended to remove this dependency by using the
notifier of intel_idle. This patch has the benefit of
encapsulating the intel_idle driver and remove some exported
functions.
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Since the ACPI bus type's PM callbacks only execute the driver ones
without doing anything else, they can be dropped, because the driver
callbacks will be executed by the PM core directly if bus type
(or other subsystem) callbacks are not present.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Since all ACPI drivers in the tree should have been switched
to power management handling based on struct dev_pm_ops,
modify the ACPI bus type driver so that is doesn't execute
legacy driver power management callbacks from the functions
pointed to by the members of the acpi_bus_pm structure.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Make the ACPI Smart Battery System driver define its PM callbacks
through a struct dev_pm_ops object rather than by using legacy PM
hooks in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Make the ACPI power resource driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Make the ACPI button driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Make the ACPI battery driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Make the ACPI AC adapter driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Make the ACPI processor driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Make the ACPI thermal driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Make the ACPI fan driver define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct acpi_device_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Modify acpi_bus_type so that it executes PM callbacks provided
by drivers through their struct dev_pm_ops objects, if present,
while still allowing the legacy ACPI PM callbacks to take precedence.
This will make it possible to convert ACPI drivers one by one to
handling PM through struct dev_pm_ops instead of the legacy way.
The code added by this change is temporary and will be removed
when all of the drivers in question have been switched over to
the PM handling based on struct dev_pm_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Make the acpi_bus_type bus type define its PM callbacks through
a struct dev_pm_ops object rather than by using legacy PM hooks
in struct bus_type.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
None of the drivers implementing the ACPI device suspend callback
uses the pm_message_t argument of it, so this argument may be dropped
entirely from that callback. This will simplify switching the ACPI
bus type to PM handling based on struct dev_pm_ops.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Pull ACPI & Power Management patches from Len Brown.
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
acpi_pad: fix power_saving thread deadlock
ACPI video: Still use ACPI backlight control if _DOS doesn't exist
ACPI, APEI, Avoid too much error reporting in runtime
ACPI: Add a quirk for "AMILO PRO V2030" to ignore the timer overriding
ACPI: Remove one board specific WARN when ignoring timer overriding
ACPI: Make acpi_skip_timer_override cover all source_irq==0 cases
ACPI, x86: fix Dell M6600 ACPI reboot regression via DMI
ACPI sysfs.c strlen fix
The acpi_pad driver can get stuck in destroy_power_saving_task()
waiting for kthread_stop() to stop a power_saving thread. The problem
is that the isolated_cpus_lock mutex is owned when
destroy_power_saving_task() calls kthread_stop(), which waits for a
power_saving thread to end, and the power_saving thread tries to
acquire the isolated_cpus_lock when it calls round_robin_cpu(). This
patch fixes the issue by making round_robin_cpu() use its own mutex.
https://bugzilla.kernel.org/show_bug.cgi?id=42981
Cc: stable@vger.kernel.org
Signed-off-by: Stuart Hayes <Stuart_Hayes@Dell.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This fixes a regression in 3.4-rc1 caused by commit
ea9f8856bd
(ACPI video: Harden video bus adding.)
Some platforms don't have _DOS control method, but the ACPI
backlight still works.
We should not invoke _DOS for these platforms.
https://bugzilla.kernel.org/show_bug.cgi?id=43168
Cc: Igor Murzov <intergalactic.anonymous@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
