Commit Graph

222299 Commits

Author SHA1 Message Date
Rafael J. Wysocki 6c4f199411 gianfar: Do not call device_set_wakeup_enable() under a spinlock
The gianfar driver calls device_set_wakeup_enable() under a spinlock,
which causes a problem to happen after the recent core power
management changes, because this function can sleep now.  Fix this
by moving the device_set_wakeup_enable() call out of the
spinlock-protected area.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 14:05:43 -08:00
Ben Greear 4038565327 ipv6: Warn users if maximum number of routes is reached.
This gives users at least some clue as to what the problem
might be and how to go about fixing it.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 14:03:24 -08:00
Ben Greear cbaf087a9f docs: Add neigh/gc_thresh3 and route/max_size documentation.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 14:03:20 -08:00
Ken Kawasaki 19c0ef6b36 axnet_cs: fix resume problem for some Ax88790 chip
axnet_cs:
    Some Ax88790 chip need to reinitialize the CISREG_CCSR register
    after resume.

Signed-off-by: Ken Kawasaki <ken_kawasaki@spring.nifty.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 14:00:04 -08:00
Lorenzo Colitti 2de7957072 ipv6: addrconf: don't remove address state on ifdown if the address is being kept
Currently, addrconf_ifdown does not delete statically configured IPv6
addresses when the interface is brought down. The intent is that when
the interface comes back up the address will be usable again. However,
this doesn't actually work, because the system stops listening on the
corresponding solicited-node multicast address, so the address cannot
respond to neighbor solicitations and thus receive traffic. Also, the
code notifies the rest of the system that the address is being deleted
(e.g, RTM_DELADDR), even though it is not. Fix it so that none of this
state is updated if the address is being kept on the interface.

Tested: Added a statically configured IPv6 address to an interface,
started ping, brought link down, brought link up again. When link came
up ping kept on going and "ip -6 maddr" showed that the host was still
subscribed to there

Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 13:44:24 -08:00
David S. Miller 8f49c2703b tcp: Don't change unlocked socket state in tcp_v4_err().
Alexey Kuznetsov noticed a regression introduced by
commit f1ecd5d9e7
("Revert Backoff [v3]: Revert RTO on ICMP destination unreachable")

The RTO and timer modification code added to tcp_v4_err()
doesn't check sock_owned_by_user(), which if true means we
don't have exclusive access to the socket and therefore cannot
modify it's critical state.

Just skip this new code block if sock_owned_by_user() is true
and eliminate the now superfluous sock_owned_by_user() code
block contained within.

Reported-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
CC: Damian Lukowski <damian@tvk.rwth-aachen.de>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
2010-11-12 13:35:00 -08:00
Eric Dumazet 190683a9d5 net: net_families __rcu annotations
Use modern RCU API / annotations for net_families array.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 13:27:25 -08:00
Philippe De Muyter e85eb11782 net: Kconfig whitespace cleanup
Many lines in Kconfig start withe 8 spaces instead of a TAB, and even
sometimes with 7 spaces.  Replace 10 or 9 spaces, or TAB + 1 space,
by TAB + 2 spaces, and 8 or 7 spaces by TAB.

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 13:21:13 -08:00
Eric Dumazet 1d7138de87 igmp: RCU conversion of in_dev->mc_list
in_dev->mc_list is protected by one rwlock (in_dev->mc_list_lock).

This can easily be converted to a RCU protection.

Writers hold RTNL, so mc_list_lock is removed, not replaced by a
spinlock.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Cypher Wu <cypher.w@gmail.com>
Cc: Américo Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 13:18:57 -08:00
Dan Rosenberg 5ef41308f9 x25: Prevent crashing when parsing bad X.25 facilities
Now with improved comma support.

On parsing malformed X.25 facilities, decrementing the remaining length
may cause it to underflow.  Since the length is an unsigned integer,
this will result in the loop continuing until the kernel crashes.

This patch adds checks to ensure decrementing the remaining length does
not cause it to wrap around.

Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:44:42 -08:00
Giuseppe Cavallaro f5539b5bfa stmmac: update the driver documentation
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:43:34 -08:00
Casey Leedom e68e6133e2 cxgb4vf: add call to Firmware to reset VF State.
Add call to Firmware to reset its VF State when we first attach to the VF.

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:31:01 -08:00
Casey Leedom e7a3795f56 cxgb4vf: Fail open if link_start() fails.
Fail open if link_start() fails.

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:31:00 -08:00
Casey Leedom 8b6edf878a cxgb4vf: flesh out PCI Device ID Table ...
Add a bunch of T4 Device IDs for the VF Driver.

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:31:00 -08:00
Casey Leedom eb6c503db3 cxgb4vf: fix some errors in Gather List to skb conversion
There were some errors in the way that internal Gather Lists were being
translated into skb's.  This also makes the VF Driver look more like the PF
Driver to facilitate easier comarison.

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:30:59 -08:00
Casey Leedom b94e72e23e cxgb4vf: fix bug in Generic Receive Offload
Fix botch in Generic Receive Offload (the Packet Gather List Total length
field wasn't being initialized).

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:30:59 -08:00
Casey Leedom 53c7886c18 cxgb4vf: don't implement trivial (and incorrect) ndo_select_queue()
Don't implement (struct net_device_ops *)->ndo_select_queue() with simple
call to skb_tx_hash().  This leads to non-persistent TX queue selection in
the Linux dev_pick_tx() routine for TCP connections.

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:30:58 -08:00
Hao Zheng 5e09a10521 ixgbe: Look inside vlan when determining offload protocol.
Currently the skb->protocol field is used to setup various
offloading parameters on transmit for the correct protocol.
However, if vlan offloading is disabled or otherwise not used,
the protocol field will be ETH_P_8021Q, not the actual protocol.
This will cause the offloading to be not performed correctly,
even though the hardware is capable of looking inside vlan tags.
Instead, look inside the header if necessary to determine the
correct protocol type.

To some extent this fixes a regression from 2.6.36 because it
was previously not possible to disable vlan offloading and this
error case was not exposed.

Signed-off-by: Hao Zheng <hzheng@nicira.com>
CC: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
CC: Alex Duyck <alexander.h.duyck@intel.com>
CC: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:30:58 -08:00
Hao Zheng d0d9d8ef59 bnx2x: Look inside vlan when determining checksum proto.
Currently the skb->protocol field is used to setup checksum
offloading on transmit for the correct protocol.  However, if
vlan offloading is disabled or otherwise not used, the protocol
field will be ETH_P_8021Q, not the actual protocol.  This will
cause the checksum to be not computed correctly, even though the
hardware is capable of looking inside vlan tags.  Instead,
look inside the header if necessary to determine the correct
protocol type.

To some extent this fixes a regression from 2.6.36 because it
was previously not possible to disable vlan offloading and this
error case was not exposed.

Signed-off-by: Hao Zheng <hzheng@nicira.com>
CC: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:30:57 -08:00
Hao Zheng 0a85df0046 vlan: Add function to retrieve EtherType from vlan packets.
Depending on how a packet is vlan tagged (i.e. hardware accelerated or
not), the encapsulated protocol is stored in different locations.  This
provides a consistent method of accessing that protocol, which is needed
by drivers, security checks, etc.

Signed-off-by: Hao Zheng <hzheng@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:30:57 -08:00
Jason Wang 167c25e4c5 virtio-net: init link state correctly
For device that supports VIRTIO_NET_F_STATUS, there's no need to
assume the link is up and we need to call nerif_carrier_off() before
querying device status, otherwise we may get wrong operstate after
diver was loaded because the link watch event was not fired as
expected.

For device that does not support VIRITO_NET_F_STATUS, we could not get
its status through virtnet_update_status() and what we can only do is
always assuming the link is up.

Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:21:18 -08:00
Joakim Tjernlund 75e6047431 ucc_geth: Fix deadlock
This script:
 while [ 1==1 ] ; do ifconfig eth0 up; usleep 1950000 ;ifconfig eth0 down; dmesg -c ;done
causes in just a second or two:
INFO: task ifconfig:572 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
ifconfig      D 0ff65760     0   572    369 0x00000000
Call Trace:
[c6157be0] [c6008460] 0xc6008460 (unreliable)
[c6157ca0] [c0008608] __switch_to+0x4c/0x6c
[c6157cb0] [c028fecc] schedule+0x184/0x310
[c6157ce0] [c0290e54] __mutex_lock_slowpath+0xa4/0x150
[c6157d20] [c0290c48] mutex_lock+0x44/0x48
[c6157d30] [c01aba74] phy_stop+0x20/0x70
[c6157d40] [c01aef40] ucc_geth_stop+0x30/0x98
[c6157d60] [c01b18fc] ucc_geth_close+0x9c/0xdc
[c6157d80] [c01db0cc] __dev_close+0xa0/0xd0
[c6157d90] [c01deddc] __dev_change_flags+0x8c/0x148
[c6157db0] [c01def54] dev_change_flags+0x1c/0x64
[c6157dd0] [c0237ac8] devinet_ioctl+0x678/0x784
[c6157e50] [c0239a58] inet_ioctl+0xb0/0xbc
[c6157e60] [c01cafa8] sock_ioctl+0x174/0x2a0
[c6157e80] [c009a16c] vfs_ioctl+0xcc/0xe0
[c6157ea0] [c009a998] do_vfs_ioctl+0xc4/0x79c
[c6157f10] [c009b0b0] sys_ioctl+0x40/0x74
[c6157f40] [c00117c4] ret_from_syscall+0x0/0x38

The reason appears to be ucc_geth_stop meets adjust_link as the
PHY reports PHY changes. I belive adjust_link hangs somewhere,
holding the PHY lock, because ucc_geth_stop disabled the
controller HW.
Fix is to stop the PHY before disabling the controller.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Reviewed-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:21:18 -08:00
Joakim Tjernlund 2040bd57b5 ucc_geth: Do not bring the whole IF down when TX failure.
ucc_geth_close lacks a cancel_work_sync(&ugeth->timeout_work)
to stop any outstanding processing of TX fail. However, one
can not call cancel_work_sync without fixing the timeout function
otherwise it will deadlock. This patch brings ucc_geth in line with
gianfar:

Don't bring the interface down and up, just reinit controller HW
and PHY.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Reviewed-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 12:21:17 -08:00
Mariusz Kozlowski 1f18b7176e net: Fix header size check for GSO case in recvmsg (af_packet)
Parameter 'len' is size_t type so it will never get negative.

Signed-off-by: Mariusz Kozlowski <mk@lab.zgora.pl>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 11:06:46 -08:00
David S. Miller 7c13a0d9a1 Merge git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nf-2.6 2010-11-12 11:04:26 -08:00
Thomas Graf 369cf77a6a rtnetlink: Fix message size calculation for link messages
nlmsg_total_size() calculates the length of a netlink message
including header and alignment. nla_total_size() calculates the
space an individual attribute consumes which was meant to be used
in this context.

Also, ensure to account for the attribute header for the
IFLA_INFO_XSTATS attribute as implementations of get_xstats_size()
seem to assume that we do so.

The addition of two message headers minus the missing attribute
header resulted in a calculated message size that was larger than
required. Therefore we never risked running out of skb tailroom.

Signed-off-by: Thomas Graf <tgraf@infradead.org>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-11-12 10:53:09 -08:00
Linus Torvalds a0a6da1a73 Merge master.kernel.org:/home/rmk/linux-2.6-arm
* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: GIC: don't disable software generated interrupts
  ARM: 6472/1: vexpress ct-ca9x4: only set twd_base if local timers are being used
  ARM: arch/arm/kernel/traps.c: Convert sprintf_symbol to %pS
  ARM: arch/arm/kernel/hw_breakpoint.c: Convert WARN_ON to WARN
  ARM: 6462/1: EP93xx: Document DMA M2P API
  ARM: 6470/1: atomic64: use generic implementation for OABI configurations
  ARM: 6469/1: perf-events: squash compiler warning
  ARM: 6468/1: backtrace: fix calculation of thread stack base
  ARM: Fix DMA coherent allocator alignment
  ARM: orion5x/kirkwood/mv78xx0: fix MPP configuration corner cases
  [ARM] TS-78xxx NAND resource type should be IORESOURCE_MEM
  ARM: pxa/saar: fix the building failure caused by typo
  ARM: pxa/cm-x2xx: remove duplicate call to pxa27x_init_irq
  ARM: pxa: fix the missing definition of IRQ_BOARD_END
  ARM: mmp: fix cpuid detection on mmp2
  [ARM] Kirkwood: restrict the scope of the PCIe reset workaround
  [ARM] Kirkwood: fix timer initialization for LaCie boards
  [ARM] Kirkwood: enhance TCLK detection
2010-11-12 10:30:49 -08:00
Linus Torvalds 7803c05429 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: do not pass injected events back to the originating handler
  Input: pcf8574_keypad - fix error handling in pcf8574_kp_probe
  Input: acecad - fix a memory leak in usb_acecad_probe error path
  Input: atkbd - add 'terminal' parameter for IBM Terminal keyboards
  Input: i8042 - add Sony VAIOs to MUX blacklist
  kgdboc: reset input devices (keyboards) when exiting debugger
  Input: export input_reset_device() for use in KGDB
  Input: adp5588-keys - unify common header defines
2010-11-12 09:52:31 -08:00
Linus Torvalds 522a99140f Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
  hwmon: (gpio-fan) Fix fan_ctrl_init error path
  hwmon: (ad7414) Return proper error code for ad7414_probe()
  hwmon: (adt7470) Return proper error code for adt7470_probe()
2010-11-12 09:50:54 -08:00
Linus Torvalds 8a9f772c14 Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block: (27 commits)
  block: remove unused copy_io_context()
  Documentation: remove anticipatory scheduler info
  block: remove REQ_HARDBARRIER
  ioprio: rcu_read_lock/unlock protect find_task_by_vpid call (V2)
  ioprio: fix RCU locking around task dereference
  block: ioctl: fix information leak to userland
  block: read i_size with i_size_read()
  cciss: fix proc warning on attempt to remove non-existant directory
  bio: take care not overflow page count when mapping/copying user data
  block: limit vec count in bio_kmalloc() and bio_alloc_map_data()
  block: take care not to overflow when calculating total iov length
  block: check for proper length of iov entries in blk_rq_map_user_iov()
  cciss: remove controllers supported by hpsa
  cciss: use usleep_range not msleep for small sleeps
  cciss: limit commands allocated on reset_devices
  cciss: Use kernel provided PCI state save and restore functions
  cciss: fix board status waiting code
  drbd: Removed checks for REQ_HARDBARRIER on incomming BIOs
  drbd: REQ_HARDBARRIER -> REQ_FUA transition for meta data accesses
  drbd: Removed the BIO_RW_BARRIER support form the receiver/epoch code
  ...
2010-11-12 08:52:47 -08:00
Linus Torvalds 25a34554d6 Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, pvclock: Remove leftover scale_delta() function
  x86, apic: Remove double #include
  x86: Adjust section annotations in AMD Fam10 MMCONF enabling code
  x86, UV: Update node controller MMRs
  x86: Remove unnecessary casts of void ptr returning alloc function return values
  x86: Address gcc4.6 "set but not used" warnings in apic.h
  x86, mm: Fix section mismatch in tlb.c
2010-11-12 08:40:23 -08:00
Linus Torvalds 28397babba Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf, amd: Use kmalloc_node(,__GFP_ZERO) for northbridge structure allocation
  perf_events: Fix time tracking in samples
  perf trace: update usage
  perf trace: update Documentation with new perf trace variants
  perf trace: live-mode command-line cleanup
  perf trace record: handle commands correctly
  perf record: make the record options available outside perf record
  perf trace scripting: remove system-wide param from shell scripts
  perf trace scripting: fix some small memory leaks and missing error checks
  perf: Fix usages of profile_cpu in builtin-top.c to use cpu_list
  perf, ui: Eliminate stack-smashing protection compiler complaint
2010-11-12 08:39:52 -08:00
Linus Torvalds 99efb9369c Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (39 commits)
  drm/ttm: Be consistent on ttm_bo_init() failures
  drm/radeon/kms: Fix retrying ttm_bo_init() after it failed once.
  drm/radeon/kms: fix thermal sensor reporting on rv6xx
  drm/radeon/kms: fix bugs in ddc and cd path router code
  drm/radeon/kms: add support for clock/data path routers
  drm: vmwgfx: fix information leak to userland
  drivers/gpu: Use vzalloc
  drm/vmwgfx: Fix oops on failing bo pin
  drm/ttm: Remove the CAP_SYS_ADMIN requirement for bo pinning
  drm/ttm: Make sure a sync object doesn't disappear while we use it
  drm/radeon/kms: don't disable shared encoders on pre-DCE3 display blocks
  drivers/gpu/drm: Update WARN uses
  drivers/gpu/drm/vmwgfx: Fix k.alloc switched arguments
  DRM: ignore invalid EDID extensions
  drm/radeon/kms: make the connector code less verbose
  drm/ttm: remove failed ttm binding error printout
  drm/ttm: Add a barrier when unreserving
  drm/ttm: Remove mm init error printouts and checks
  drm/ttm: Remove pointless list_empty check
  drm/ttm: Use private locks for the default bo range manager
  ...
2010-11-12 08:11:58 -08:00
Linus Torvalds fb1cb7b27b Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: remove incorrect assert in xfs_vm_writepage
  xfs: use hlist_add_fake
  xfs: fix a few compiler warnings with CONFIG_XFS_QUOTA=n
  xfs: tell lockdep about parent iolock usage in filestreams
  xfs: move delayed write buffer trace
  xfs: fix per-ag reference counting in inode reclaim tree walking
  xfs: xfs_ioctl: fix information leak to userland
  xfs: remove experimental tag from the delaylog option
2010-11-12 08:11:03 -08:00
Linus Torvalds fe7e96f66b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  APPARMOR: Fix memory leak of apparmor_init()
  APPARMOR: Fix memory leak of alloc_namespace()
2010-11-12 08:00:25 -08:00
Linus Torvalds 0f90933c47 Merge branch 'for-2.6.37' of git://linux-nfs.org/~bfields/linux
* 'for-2.6.37' of git://linux-nfs.org/~bfields/linux:
  locks: remove dead lease error-handling code
  locks: fix leak on merging leases
  nfsd4: fix 4.1 connection registration race
2010-11-12 07:59:41 -08:00
Steffen Klassert e2b3483541 crypto: pcrypt - Fix use after free on padata_free
kobject_put is called from padata_free for the padata kobject.
The kobject's release function frees the padata instance,
so don't call kobject_put for the padata kobject from pcrypt.

Reported-and-tested-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:58:46 -08:00
Edgar (gimli) Hucek bd760e1e5b backlight: MacBookAir3,1(3,2) mbp-nvidia-bl support
Add support for the MacBookAir3,1 and MacBookAir3,2 to the mbp-nvidia-bl
driver.

Signed-off-by: Edgar (gimli) Hucek <gimli@dark-green.com>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:33 -08:00
Michael Hennerich 4f1aa84631 drivers/video/backlight/adp8860_bl.c: check strict_strtoul() return value
Handle return value, strict_strtoul is declared with attribute
warn_unused_result.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:33 -08:00
Michael Hennerich c7ce2500e3 drivers/video/backlight/adp8860_bl.c: fix ambient light zone overwrite handling
This affects the get/set of the current Ambient Light Zone.  Reading
should return an integer between 1..3 (1 = Daylight, 2 = office, 3 =
dark).  Writing a value between 1..3 forces the backlight controller to
enter the corresponding Ambient Light Zone.  Writing 0 returns to normal
operation.

Fix valid range checking so we don't write invalid values to the
controller, and make sure we subtract 1, since this is what the register
definition (CFGR:BLV) requires.  Otherwise the values written don't work
correctly.

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:33 -08:00
Arun Murthy fef7764f8b backlight: add low threshold to pwm backlight
The intensity of the backlight can be varied from a range of
max_brightness to zero.  Though most, if not all the pwm based backlight
devices start flickering at lower brightness value.  And also for each
device there exists a brightness value below which the backlight appears
to be turned off though the value is not equal to zero.

If the range of brightness for a device is from zero to max_brightness.  A
graph is plotted for brightness Vs intensity for the pwm based backlight
device has to be a linear graph.

intensity
	  |   /
	  |  /
	  | /
	  |/
	  ---------
	 0	max_brightness

But pratically on measuring the above we note that the intensity of
backlight goes to zero(OFF) when the value in not zero almost nearing to
zero(some x%).  so the graph looks like

intensity
	  |    /
	  |   /
	  |  /
	  |  |
	  ------------
	 0   x	 max_brightness

In order to overcome this drawback knowing this x% i.e nothing but the low
threshold beyond which the backlight is off and will have no effect, the
brightness value is being offset by the low threshold value(retaining the
linearity of the graph).  Now the graph becomes

intensity
	  |     /
	  |    /
	  |   /
	  |  /
	  -------------
	   0	  max_brightness

With this for each and every digit increment in the brightness from zero
there is a change in the intensity of backlight.  Devices having this
behaviour can set the low threshold brightness(lth_brightness) and pass
the same as platform data else can have it as zero.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Arun Murthy <arun.murthy@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:33 -08:00
Axel Lin a1025e224c drivers/video/backlight/s6e63m0.c: fix section mismatch
Eliminate section mismatch warning by marking s6e63m0_probe() as __devinit.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Cc: InKi Dae <inki.dae@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:33 -08:00
Axel Lin d974e00b95 drivers/video/backlight/s6e63m0.c: unregister backlight device and remove sysfs attribute file in s6e63m0_remove
s6e63m0_probe() registered backlight device and create sysfs attribute
files, thus s6e63m0_remove() should unregister backlight device and remove
sysfs attribute files.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Cc: InKi Dae <inki.dae@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:33 -08:00
Marek Vasut 4dbdf8861a backlight: fix blanking for L4F00242T03 LCD
The LCD was turned on if the variable power was > 0, but that was
incorrect.  The LCD has to be turned on in NORMAL and UNBLANK case.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:33 -08:00
Marek Vasut 6bde9082c5 backlight: fix blanking for LMS283GF05 LCD
The LCD was turned on if the variable power was > 0, but that was
incorrect.  The LCD has to be turned on in NORMAL and UNBLANK case.

Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:33 -08:00
Axel Lin ed3a6787bf drivers/video/backlight/s6e63m0.c: set permissions on gamma_table file to 0444
gamma_table is not writable, so set permissions to 0444.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:33 -08:00
Davidlohr Bueso 25672b9dde drivers/leds/leds-gpio.c: properly initialize return value
In the event that none of the configs are set (CONFIG_LEDS_GPIO_PLATFORM,
CONFIG_LEDS_GPIO_OF, CONFIG_LEDS_GPIO_PLATFORM), we will return a bogus
value when initializing the module.

Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Acked-by: Richard Purdie <rpurdie@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:32 -08:00
Samu Onkalo 5991e154b2 Documentation: led drivers lp5521 and lp5523
Create sub directory Documentation/leds and add short documentation for
LP5521 and LP5523 drivers.

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:32 -08:00
Samu Onkalo f4920f673c leds: update LP552x support Kconfig and Makefile
Provide configuration and compilation support for LP5521 and LP5523

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:32 -08:00
Samu Onkalo 0efba16cc0 leds: driver for National Semiconductors LP5523 chip
LP5523 chip is nine channel led driver with programmable engines.  Driver
provides support for that chip for direct access via led class or via
programmable engines.

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-12 07:55:32 -08:00