kernel_optimize_test/include
Venkatesh Pallipadi dcb84f335b cpuidle acpi driver: fix oops on AC<->DC
cpuidle and acpi driver interaction bug with the way cpuidle_register_driver()
is called. Due to this bug, there will be oops on
AC<->DC on some systems, where they support C-states in one DC and not in AC.

The current code does
ON BOOT:
	Look at CST and other C-state info to see whether more than C1 is
	supported. If it is, then acpi processor_idle does a
	cpuidle_register_driver() call, which internally enables the device.

ON CST change notification (AC<->DC) and on suspend-resume:
	acpi driver temporarily disables device, updates the device with
	any new C-states, and reenables the device.

The problem is is on boot, there are no C2, C3 states supported and we skip
the register. Later on AC<->DC, we may get a CST notification and we try
to reevaluate CST and enabled the device, without actually registering it.
This causes breakage as we try to create /sys fs sub directory, without the
parent directory which is created at register time.

Thanks to Sanjeev for reporting the problem here.
http://bugzilla.kernel.org/show_bug.cgi?id=10394

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2008-06-11 19:13:45 -04:00
..
acpi
asm-alpha asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace 2008-05-14 19:11:14 -07:00
asm-arm [ARM] 5067/1: _raw_write_can_lock macro bugfix 2008-06-02 13:44:17 +01:00
asm-avr32 avr32: types: use <asm-generic/int-*.h> for the avr32 architecture 2008-05-02 16:18:20 -07:00
asm-blackfin Blackfin Serial Driver: Clean up BF54x macro in blackfin UART driver. 2008-06-03 12:19:45 +08:00
asm-cris cris: types: use <asm-generic/int-*.h> for the cris architecture 2008-05-02 16:18:20 -07:00
asm-frv FRV: ip_fast_csum() requires a memory clobber on its inline asm 2008-06-05 10:31:21 -07:00
asm-generic gpio: build fixes 2008-05-24 09:56:13 -07:00
asm-h8300 h8300: fix typo in header guard 2008-06-06 11:29:12 -07:00
asm-ia64 [IA64] Workaround for RSE issue 2008-05-27 13:24:39 -07:00
asm-m32r asm-m32r/uaccess.h must #include <asm/setup.h> 2008-06-06 11:29:13 -07:00
asm-m68k m68k: Prefix ISA type with ISA_TYPE_ 2008-05-18 13:28:50 -07:00
asm-m68knommu m68knommu: rework definition of HZ 2008-05-01 08:08:36 -07:00
asm-mips [MIPS] Fix typo in header guard 2008-06-05 18:13:16 +01:00
asm-mn10300 MN10300: Fix typo in header guard 2008-05-28 07:59:06 -07:00
asm-parisc parisc: use conditional macro for 64-bit wide ops 2008-05-15 11:03:43 -04:00
asm-powerpc [POWERPC] Add "memory" clobber to MMIO accessors 2008-05-31 17:08:28 +10:00
asm-ppc [POWERPC] ppc: More compile fixes 2008-05-12 22:57:51 +10:00
asm-s390 [S390] Fix __ctl_load/__ctl_store inline assembly constraints 2008-06-10 10:03:28 +02:00
asm-sh sh: fix miscompilation of ip_fast_csum with gcc >= 4.3 2008-06-02 12:40:14 +09:00
asm-sparc sparc: remove CVS keywords 2008-05-20 00:33:44 -07:00
asm-sparc64 sparc64: IO accessors fix 2008-05-30 02:01:28 -07:00
asm-um uml: activate_mm: remove the dead PF_BORROWED_MM check 2008-06-06 11:36:22 -07:00
asm-v850 v850: fix typo in header guard 2008-06-06 11:29:12 -07:00
asm-x86 x86: fix broken math-emu with lazy allocation of fpu area 2008-06-04 13:11:46 +02:00
asm-xtensa asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace 2008-05-14 19:11:14 -07:00
crypto [CRYPTO] api: Fix scatterwalk_sg_chain 2008-05-01 18:22:28 +08:00
keys
linux cpuidle acpi driver: fix oops on AC<->DC 2008-06-11 19:13:45 -04:00
math-emu
media V4L/DVB (7911): Remove v4l2_video_std_fps prototype declaration 2008-06-05 06:35:42 -03:00
mtd
net sctp: Fix ECN markings for IPv6 2008-06-04 12:40:15 -07:00
pcmcia
rdma IB/core: Remove IB_DEVICE_SEND_W_INV capability flag 2008-06-09 09:58:42 -07:00
rxrpc
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2008-05-02 13:52:35 -07:00
sound [ALSA] ac97 - Fix ASUS A9T laptop output 2008-05-30 16:20:42 +02:00
video
xen
Kbuild