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279f8f9549
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Corentin Chary 279f8f9549 eeepc-wmi: serialize access to wmi method 
\AMW0.WMBC, which is the main method that we use,
is not reentrant. When wireless hotpluging is enabled,
toggling the status of the wireless device using WMBC will
trigger a notification and the notification handler need to
call WMBC again to get the new status of the device, this
will trigger the following error:

ACPI Error (dswload-0802): [_T_0] Namespace lookup failure, AE_ALREADY_EXISTS
ACPI Exception: AE_ALREADY_EXISTS, During name lookup/catalog (20100428/psloop-231)
ACPI Error (psparse-0537): Method parse/execution failed [\AMW0.WMBC] (Node f7023b88), AE_ALREADY_EXISTS
ACPI: Marking method WMBC as Serialized because of AE_ALREADY_EXISTS error

Since there is currently no way to tell the acpi subsystem to mark
a method as serialized, we do it in eeepc-wmi.

Of course, we could let the first call fail, and then it would work,
but it doesn't seems really clean, and it will make the first
WMBC call return a random value.

This patch was tested on EeePc 1000H with a RaLink RT2860
wireless card using the rt2800pci driver. rt2860sta driver
seems to deadlock when we remove the pci device...

Signed-off-by: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-03-28 06:05:15 -04:00
..
accessibility
acpi Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2011-03-25 21:01:43 -07:00
amba
ata Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2011-03-18 06:31:43 -07:00
atm Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-03-18 10:37:40 -07:00
auxdisplay
base Introduce ARCH_NO_SYSDEV_OPS config option (v2) 2011-03-23 22:16:41 +01:00
block Merge branch 'for-2.6.39/drivers' of git://git.kernel.dk/linux-2.6-block 2011-03-27 20:02:07 -07:00
bluetooth Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-03-18 10:37:40 -07:00
cdrom
char drivers/char/mem.c: clean up the code 2011-03-23 19:46:40 -07:00
clk
clocksource
connector
cpufreq cpufreq: Use syscore_ops for boot CPU suspend/resume (v2) 2011-03-23 22:16:32 +01:00
cpuidle
crypto Merge branch 'devicetree/next' of git://git.secretlab.ca/git/linux-2.6 2011-03-16 17:28:10 -07:00
dca drivers/dca/dca-core.c: use list_move() instead of list_del()/list_add() combination 2011-03-22 17:44:12 -07:00
dio
dma mfd: mfd_cell is now implicitly available to timberdale drivers 2011-03-23 10:41:52 +01:00
edac Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-03-18 10:37:40 -07:00
eisa
firewire Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 2011-03-21 10:05:22 -07:00
firmware sigma-firmware: loader for Analog Devices' SigmaStudio 2011-03-22 17:44:15 -07:00
gpio Merge branch 'irq-cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2011-03-25 20:24:05 -07:00
gpu Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 2011-03-24 17:27:20 -07:00
hid backlight: add backlight type 2011-03-22 17:43:59 -07:00
hwmon Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging 2011-03-27 20:03:39 -07:00
hwspinlock hwspinlock: depend on OMAP4 2011-03-18 17:15:11 -07:00
i2c mfd: mfd_cell is now implicitly available to timberdale drivers 2011-03-23 10:41:52 +01:00
ide ide: ensure that we re-run the queue handler 2011-03-26 19:49:54 +01:00
idle
ieee802154 ieee802154: change to new flag variable 2011-03-17 14:05:34 +01:00
infiniband Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband 2011-03-25 21:06:37 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2011-03-25 20:50:12 -07:00
isdn Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6 2011-03-20 18:14:55 -07:00
leds Merge git://git.infradead.org/battery-2.6 2011-03-25 21:00:29 -07:00
lguest
macintosh backlight: add backlight type 2011-03-22 17:43:59 -07:00
mca
md Merge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm 2011-03-25 20:51:44 -07:00
media [media] rc: update for bitop name changes 2011-03-24 18:58:55 -07:00
memstick memstick: add driver for Ricoh R5C592 card reader 2011-03-25 17:45:16 -07:00
message Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
mfd mfd: Clean up max8997 IRQ namespace 2011-03-27 00:09:53 +01:00
misc Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb 2011-03-25 21:04:56 -07:00
mmc Merge branch 'for-2.6.39/core' of git://git.kernel.dk/linux-2.6-block 2011-03-24 10:16:26 -07:00
mtd Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-linus-1 2011-03-25 17:41:20 +02:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2011-03-25 21:02:22 -07:00
nfc
nubus
of of/flattree: minor cleanups 2011-03-23 14:55:56 -06:00
oprofile
parisc
parport
pci Merge branch 'syscore' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6 2011-03-25 21:07:59 -07:00
pcmcia Merge branch 'devicetree/next' of git://git.secretlab.ca/git/linux-2.6 2011-03-16 17:28:10 -07:00
platform eeepc-wmi: serialize access to wmi method 2011-03-28 06:05:15 -04:00
pnp pnp: only assign IORESOURCE_DMA if CONFIG_ISA_DMA_API is enabled 2011-03-22 17:44:16 -07:00
power Merge git://git.infradead.org/battery-2.6 2011-03-25 21:00:29 -07:00
pps pps: remove unreachable code 2011-03-22 17:44:17 -07:00
ps3
rapidio rapidio: fix potential null deref on failure path 2011-03-23 19:46:44 -07:00
regulator regulator: Add MODULE_DEVICE_TABLE to max8997 and max8998 2011-03-27 11:47:25 +01:00
rtc rtc: add real-time clock driver for NVIDIA Tegra 2011-03-22 17:44:16 -07:00
s390 Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6 2011-03-25 17:47:04 -07:00
sbus
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2011-03-25 21:06:13 -07:00
sfi
sh sh: Use struct syscore_ops instead of sysdevs 2011-03-23 18:57:37 +09:00
sn
spi Merge branch 'devicetree/merge' of git://git.secretlab.ca/git/linux-2.6 2011-03-24 09:30:20 -07:00
ssb
staging staging: Fix bdops->check_events() misconversion in cyasblkdev_block.c 2011-03-26 19:52:59 +01:00
target Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2011-03-25 21:06:13 -07:00
tc
telephony
thermal
tty Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb 2011-03-25 21:04:56 -07:00
uio
usb Merge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6 2011-03-24 10:02:55 -07:00
uwb
vhost vhost-net: remove unlocked use of receive_queue 2011-03-13 23:08:19 +02:00
video Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2011-03-24 09:50:13 -07:00
virtio
vlynq
w1 w1: Silence ds1wm warnings related to mfd_get_cell changes 2011-03-23 10:42:02 +01:00
watchdog rdc321x-southbridge: Use mfd_data instead of driver_data 2011-03-23 10:41:57 +01:00
xen Merge branch 'stable/xen.pm.bug-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen 2011-03-17 18:37:42 -07:00
zorro
Kconfig
Makefile