* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-2.6-block:
ide: always ensure that blk_delay_queue() is called if we have pending IO
block: fix request sorting at unplug
dm: improve block integrity support
fs: export empty_aops
ide: ide_requeue_and_plug() reinstate "always plug" behaviour
blk-throttle: don't call xchg on bool
ufs: remove unessecary blk_flush_plug
block: make the flush insertion use the tail of the dispatch list
block: get rid of elv_insert() interface
block: dump request state on seeing a corrupted request completion
Just because we are not requeuing a request does not mean that
some aren't pending. So always issue a blk_delay_queue() if
either we are requeueing OR there's pending IO.
This fixes a boot problem for some IDE boxes.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
The current block integrity (DIF/DIX) support in DM is verifying that
all devices' integrity profiles match during DM device resume (which
is past the point of no return). To some degree that is unavoidable
(stacked DM devices force this late checking). But for most DM
devices (which aren't stacking on other DM devices) the ideal time to
verify all integrity profiles match is during table load.
Introduce the notion of an "initialized" integrity profile: a profile
that was blk_integrity_register()'d with a non-NULL 'blk_integrity'
template. Add blk_integrity_is_initialized() to allow checking if a
profile was initialized.
Update DM integrity support to:
- check all devices with _initialized_ integrity profiles match
during table load; uninitialized profiles (e.g. for underlying DM
device(s) of a stacked DM device) are ignored.
- disallow a table load that would result in an integrity profile that
conflicts with a DM device's existing (in-use) integrity profile
- avoid clearing an existing integrity profile
- validate all integrity profiles match during resume; but if they
don't all we can do is report the mismatch (during resume we're past
the point of no return)
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
We see stalls if we don't always ensure that the queue gets run
again. Even if rq == NULL, we could have other pending requests
in the queue.
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/pseries: Fix build without CONFIG_HOTPLUG_CPU
powerpc: Set nr_cpu_ids early and use it to free PACAs
powerpc/pseries: Don't register global initcall
powerpc/kexec: Fix mismatched ifdefs for PPC64/SMP.
edac/mpc85xx: Limit setting/clearing of HID1[RFXE] to e500v1/v2 cores
powerpc/85xx: Update dts for PCIe memory maps to match u-boot of Px020RDB
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits)
ipv6: Don't pass invalid dst_entry pointer to dst_release().
mlx4: fix kfree on error path in new_steering_entry()
tcp: len check is unnecessarily devastating, change to WARN_ON
sctp: malloc enough room for asconf-ack chunk
sctp: fix auth_hmacs field's length of struct sctp_cookie
net: Fix dev dev_ethtool_get_rx_csum() for forced NETIF_F_RXCSUM
usbnet: use eth%d name for known ethernet devices
starfire: clean up dma_addr_t size test
iwlegacy: fix bugs in change_interface
carl9170: Fix tx aggregation problems with some clients
iwl3945: disable hw scan by default
wireless: rt2x00: rt2800usb.c add and identify ids
iwl3945: do not deprecate software scan
mac80211: fix aggregation frame release during timeout
cfg80211: fix BSS double-unlinking (continued)
cfg80211:: fix possible NULL pointer dereference
mac80211: fix possible NULL pointer dereference
mac80211: fix NULL pointer dereference in ieee80211_key_alloc()
ath9k: fix a chip wakeup related crash in ath9k_start
mac80211: fix a crash in minstrel_ht in HT mode with no supported MCS rates
...
This is a revert of 428d2e828c.
This is broken in the same manner as for VGA: trying to write to an
invalid address on the (currently 7-bit) i2c bus.
One notable failure appears to be for MacBooks. The scary part was that
it gave the appearance of working (i.e. reporting the absence of the
panel) on various all-in-one machines with ghost LVDS panels and not
failing for laptops.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Keith Packard <keithp@keithp.com>
This is a moral revert of 6ec3d0c0e9.
Following the fix to reset the GMBUS controller after a NAK, we finally
utilize the 0xa0 probe for a CRT connection. And discover that the code
is broken. Shock.
There are a number of issues, but following a key insight from Dave
Airlie, that 0xA0 is an invalid address on a 7-bit bus (though not if we
were to enable 10-bit addressing), and would look like the EDID port
0x50, it is possible to see where the confusion starts.
In short, a write to 0xA0 is accepted by the GMBUS controller which we
interpreted as meaning the existence of a connection (a slave on the
other end of the wire ACKing the write). That was false.
During testing with a broken GMBUS implementation, which never reset an
earlier NAK, this test always reported a NAK and so we proceeded on to
the next test.
Reported-and-tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=35904
Reported-and-tested-by: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=32612
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Dave Airlie <airlied@linux.ie>
Signed-off-by: Keith Packard <keithp@keithp.com>
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm: fix "persistant" typo
drm/radeon/kms: add some new ontario pci ids
drm/radeon/kms: pageflipping cleanup for avivo+
drm/radeon/kms: Add support for tv-out dongle on G5 9600
drm: export drm_find_cea_extension to drivers
drm/radeon/kms: add some sanity checks to obj info record parsingi (v2)
drm/i915: Reset GMBUS controller after NAK
drm/i915: Busy-spin wait_for condition in atomic contexts
drm/i915/lvds: Always return connected in the absence of better information
Commit f23eb2b2b2 ('tty: stop using "delayed_work" in the tty layer')
ended up causing hung machines on UP with no preemption, because the
work routine to flip the buffer data to the ldisc would endlessly re-arm
itself if the destination buffer had filled up.
With the delayed work, that only caused a timer-driving polling of the
tty state every timer tick, but without the delay we just ended up with
basically a busy loop instead.
Stop the insane polling, and instead make the code that opens up the
receive room re-schedule the buffer flip work. That's what we should
have been doing anyway.
This same "poll for tty room" issue is almost certainly also the cause
of excessive kworker activity when idle reported by Dave Jones, who also
reported "flush_to_ldisc executing 2500 times a second" back in Nov 2010:
http://lkml.org/lkml/2010/11/30/592
which is that silly flushing done every timer tick. Wasting both power
and CPU for no good reason.
Reported-and-tested-by: Alexander Beregalov <a.beregalov@gmail.com>
Reported-and-tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Cc: Greg KH <gregkh@suse.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86, UV: Fix kdump reboot
x86, amd-nb: Rename CPU PCI id define for F4
sound: Add delay.h to sound/soc/codecs/sn95031.c
x86, mtrr, pat: Fix one cpu getting out of sync during resume
x86, microcode: Unregister syscore_ops after microcode unloaded
x86: Stop including <linux/delay.h> in two asm header files
Fix build warnings caused by removal of *filp arg in struct
usb_serial_driver.
These changes were missed somehow in commits 00a0d0d65b ("tty: remove
filp from the USB tty ioctls") and 60b33c133c ("tiocmget: kill off
the passing of the struct file")
drivers/usb/serial/mct_u232.c:159: warning: initialization from incompatible pointer type
drivers/usb/serial/opticon.c:627: warning: initialization from incompatible pointer type
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
[media] radio: wl128x: Update registration process with ST
[media] staging: altera-jtag needs delay.h
* 'unicore32' of git://git.kernel.org/pub/scm/linux/kernel/git/epip/linux-2.6-unicore32:
unicore32 framebuffer fix: get videomemory by __get_free_pages() and make it floatable
unicore32 core architecture: remove duplicated #include
unicore32 rtc driver fix: cleanup irq_set_freq and irq_set_state
unicore32 fix: remove arch-specific futex support
unicore32 ldscript fix: add cacheline parameter to PERCPU() macro
Fix the following section mismatch warning.
WARNING: drivers/rtc/built-in.o(.data+0xa0): Section mismatch in reference from the variable vrtc_mrst_platform_driver to the function .init.text:vrtc_mrst_platform_probe()
The variable vrtc_mrst_platform_driver references the function __init vrtc_mrst_platform_probe()
If the reference is valid then annotate the variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,
Signed-off-by: Major Lee <major_lee@wistron.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
On error path kfree() should get pointer to memory allocated by
kmalloc() not the address of variable holding it (which is on stack).
Signed-off-by: Mariusz Kozlowski <mk@lab.zgora.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
Avoid touching the flip setup regs while
acceleration is running. Set them at modeset
rather than during pageflip. Touching these
regs while acceleration is active caused hangs
on pre-avivo chips. These chips do not seem
to be affected, but better safe than sorry,
plus it avoids repeatedly reprogramming the
regs every flip.
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
In rpckbd_open prror path, free_irq() was using NULL rather than the
driver data as the data pointer so free_irq() wouldn't have matched.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
The documentation for the USB ethernet devices suggests that
only some devices are supposed to use usb0 as the network interface
name instead of eth0. The logic used there, and documented in
Kconfig for CDC is that eth0 will be used when the mac address
is a globally assigned one, but usb0 is used for the locally
managed range that is typically used on point-to-point links.
Unfortunately, this has caused a lot of pain on the smsc95xx
device that is used on the popular pandaboard without an
EEPROM to store the MAC address, which causes the driver to
call random_ether_address().
Obviously, there should be a proper MAC addressed assigned to
the device, and discussions are ongoing about how to solve
this, but this patch at least makes sure that the default
interface naming gets a little saner and matches what the
user can expect based on the documentation, including for
new devices.
The approach taken here is to flag whether a device might be a
point-to-point link with the new FLAG_POINTTOPOINT setting in
the usbnet driver_info. A driver can set both FLAG_POINTTOPOINT
and FLAG_ETHER if it is not sure (e.g. cdc_ether), or just one
of the two. The usbnet framework only looks at the MAC address
for device naming if both flags are set, otherwise it trusts the
flag.
Signed-off-by: Arnd Bergmann <arnd.bergmann@linaro.org>
Tested-by: Andy Green <andy.green@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Now we have CONFIG_ARCH_DMA_ADDR_T_64BIT. We can fix the hacky
dma_addr_t size test cleanly.
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
kdump: Allow shrinking of kdump region to be overridden
powerpc/pmac/smp: Remove no-longer needed preempt workaround
powerpc/smp: Increase vdso_data->processorCount, not just decrease it
powerpc/smp: Create idle threads on demand and properly reset them
powerpc/smp: Don't expose per-cpu "cpu_state" array
powerpc/pmac/smp: Fix CPU hotplug crashes on some machines
powerpc/smp: Add a smp_ops->bringup_up() done callback
powerpc/pmac: Rename cpu_state in therm_pm72 to avoid collision
powerpc/pmac/smp: Properly NAP offlined CPU on G5
powerpc/pmac/smp: Remove HMT changes for PowerMac offline code
powerpc/pmac/smp: Consolidate 32-bit and 64-bit PowerMac cpu_die in one file
powerpc/pmac/smp: Fixup smp_core99_cpu_disable() and use it on 64-bit
powerpc/pmac/smp: Rename fixup_irqs() to migrate_irqs() and use it on ppc32
powerpc/pmac/smp: Fix 32-bit PowerMac cpu_die
powerpc/smp: Remove unused smp_ops->cpu_enable()
powerpc/smp: Remove unused generic_cpu_enable()
powerpc/smp: Fix generic_mach_cpu_die()
powerpc/smp: soft-replugged CPUs must go back to start_secondary
powerpc: Make decrementer interrupt robust against offlined CPUs
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
sparc32: Pass task_struct to schedule_tail() in ret_from_fork
apbuart: Depend upon sparc.
sparc64: Fix section mis-match errors.
sparc32,leon: Fixed APBUART frequency detection
sparc32, leon: APBUART driver must use archdata to get IRQ number
sparc: Hook up syncfs system call.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
appletalk: Fix OOPS in atalk_release().
mlx4: Fixing bad size of event queue buffer
mlx4: Fixing use after free
bonding:typo in comment
sctp: Pass __GFP_NOWARN to hash table allocation attempts.
connector: convert to synchronous netlink message processing
fib: add rtnl locking in ip_fib_net_exit
atm/solos-pci: Don't flap VCs when carrier state changes
atm/solos-pci: Don't include frame pseudo-header on transmit hex-dump
atm/solos-pci: Use VPI.VCI notation uniformly.
Atheros, atl2: Fix mem leaks in error paths of atl2_set_eeprom
netdev: fix mtu check when TSO is enabled
net/usb: Ethernet quirks for the LG-VL600 4G modem
phylib: phy_attach_direct: phy_init_hw can fail, add cleanup
bridge: mcast snooping, fix length check of snooped MLDv1/2
via-ircc: Pass PCI device pointer to dma_{alloc, free}_coherent()
via-ircc: Use pci_{get, set}_drvdata() instead of static pointer variable
net: gre: provide multicast mappings for ipv4 and ipv6
bridge: Fix compilation warning in function br_stp_recalculate_bridge_id()
net: Fix warnings caused by MAX_SKB_FRAGS change.
* 'keithp/drm-intel-fixes' of /ssd/git/drm-next:
drm/i915: Reset GMBUS controller after NAK
drm/i915: Busy-spin wait_for condition in atomic contexts
drm/i915/lvds: Always return connected in the absence of better information
Nouveau needs access to this structure to build an ELD block for use
by the HDA audio codec.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
As underlying ST driver registration API's have changed with
latest 2.6.38-rc8 kernel this patch will update the FM driver
accordingly.
Signed-off-by: Manjunatha Halli <manjunatha_halli@ti.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
altera-jtag.c needs to include <linux/delay.h> to fix a build error:
drivers/staging/altera-stapl/altera-jtag.c:398: error: implicit declaration of function 'udelay'
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Igor M. Liplianin <liplianin@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
We should reduce the number of reserved completion queues from the total
number of entries. Since the queue size is power of two, not reducing the
reserved entries, caused a double queue size, which may lead to allocation
failures in some cases.
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case of allocation failure, tried to use the promiscuous QP
entry that was previously freed.
Now freeing this entry only in case we will not put it back to the list
of promiscuous entries.
Reported-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Yevgeny Petrilin <yevgenyp@mellanox.co.il>
Signed-off-by: David S. Miller <davem@davemloft.net>
Once a NAK has been asserted by the slave, we need to reset the GMBUS
controller in order to continue. This is done by asserting the Software
Clear Interrupt bit and then clearing it again to restore operations.
If we don't clear the NAK, then all future GMBUS xfers will fail,
including DDC probes and EDID retrieval.
v2: Add some comments as suggested by Keith Packard.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=35781
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: "Mengmeng Meng" <mengmeng.meng@intel.com>
During modesetting, we need to wait for the hardware to report
readiness by polling the registers. Normally, we call msleep() between
reads, because some state changes may take a whole vblank or more
to complete. However during a panic, we are in an atomic context and
cannot sleep. Instead, busy spin polling the termination condition.
References: https://bugzilla.kernel.org/show_bug.cgi?id=31772
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
On a "really fragile" laptop I noticed a single
i8042.c: i8042 controller selftest failed. (0x1 != 0x55)
error in the log. But there's no reason to print this message at
KERN_ERR level each time that loop fails, especially since the message
telling about the overall selftest failure is printed at KERN_INFO level
(on X86).
Add an actual error message for non-X86 systems, where a selftest
failure is (apparently) more serious. Remove a space in an another error
message.
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
'struct dmi_system_id' arrays must always have a terminator to keep
dmi_check_system() from looking at data (and possibly crashing) it
isn't supposed to look at.
The issue went unnoticed until ef8313bb1a,
but was introduced about a year earlier with
7705d548cb (which also similarly changed
lifebook.c, but the problem there got eliminated shortly afterwards).
The first hunk therefore is a stable candidate back to 2.6.33, while
the full change is needed only on 2.6.38.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: stable@kernel.org
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
We should return IRQ_NONE from interrupt handler in case keyboard
does not report DATA_AVAIL condition.
Signed-off-by: Rajeev Kumar <rajeev-dlh.kumar@st.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Some devices provide absolute axes with min/max of 0/0 (e.g. wacom's
ABS_MISC axis). Current uinput restrictions do not allow duplication of
these devices and require hacks in userspace to work around this.
If the kernel accepts physical devices with a min/max of 0/0, uinput
shouldn't disallow the same range.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
It absolutely needs to be able to get at pdev_archdata members
which are sparc specific.
Signed-off-by: David S. Miller <davem@davemloft.net>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Commits 01a16b21 (netlink: kill eff_cap from struct netlink_skb_parms)
and c53fa1ed (netlink: kill loginuid/sessionid/sid members from struct
netlink_skb_parms) removed some members from struct netlink_skb_parms
that depend on the current context, all netlink users are now required
to do synchronous message processing.
connector however queues received messages and processes them in a work
queue, which is not valid anymore. This patch converts connector to do
synchronous message processing by invoking the registered callback handler
directly from the netlink receive function.
In order to avoid invoking the callback with connector locks held, a
reference count is added to struct cn_callback_entry, the reference
is taken when finding a matching callback entry on the device's queue_list
and released after the callback handler has been invoked.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds
Jens Axboe
Mike Snitzer
Chris Wilson
Benjamin Herrenschmidt
Jan Engelhardt
Randy Dunlap
Major Lee
Kumar Gala
Mariusz Kozlowski
Alex Deucher
Axel Lin
Guan Xuetao
Arnd Bergmann
FUJITA Tomonori
David S. Miller
Manoj Iyer
Dave Airlie
Ben Skeggs
John Lindgren
Manjunatha Halli
Yevgeny Petrilin
Peter Pan(潘卫平)
Paul Bolle
Jan Beulich
Rajeev Kumar
Peter Hutterer
Patrick McHardy