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48d3d8263c
linux/drivers
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Ingo Molnar 48d3d8263c revert "ACPI: drivers/acpi: elide a non-zero test on a result that is never 0" 
Revert commit 1192aeb957 ("ACPI:
drivers/acpi: elide a non-zero test on a result that is never 0")
because it turns out that thermal_cooling_device_register() does
actually return NULL if CONFIG_THERMAL is turned off (then the routine
turns into a dummy inline routine in the header files that returns NULL
unconditionally).

This was found with randconfig testing, causing a crash during bootup:

  initcall 0x78878534 ran for 13 msecs: acpi_button_init+0x0/0x51()
  Calling initcall 0x78878585: acpi_fan_init+0x0/0x2c()
  BUG: unable to handle kernel NULL pointer dereference at 00000000
  IP: [<782b8ad0>] acpi_fan_add+0x7d/0xfd
  *pde = 00000000
  Oops: 0000 [#1]
  Modules linked in:

  Pid: 1, comm: swapper Not tainted (2.6.25-rc7-sched-devel.git-x86-latest.git #14)
  EIP: 0060:[<782b8ad0>] EFLAGS: 00010246 CPU: 0
  EIP is at acpi_fan_add+0x7d/0xfd
  EAX: b787c718 EBX: b787c400 ECX: b782ceb4 EDX: 00000007
  ESI: 00000000 EDI: b787c6f4 EBP: b782cee0 ESP: b782cecc
   DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
  Process swapper (pid: 1, ti=b782c000 task=b7846000 task.ti=b782c000)
  Stack: b787c459 00000000 b787c400 78790888 b787c60c b782cef8 782b6fb8 ffffffda
         b787c60c 00000000 78790958 b782cf0c 783005d7 b787c60c 78790958 78790584
         b782cf1c 783007f6 b782cf28 00000000 b782cf40 782ffc4a 78790958 b794d558
  Call Trace:
   [<782b6fb8>] ? acpi_device_probe+0x3e/0xdb
   [<783005d7>] ? driver_probe_device+0x82/0xfc
   [<783007f6>] ? __driver_attach+0x3a/0x70
   [<782ffc4a>] ? bus_for_each_dev+0x3e/0x60
   [<7830048c>] ? driver_attach+0x14/0x16
   [<783007bc>] ? __driver_attach+0x0/0x70
   [<7830006a>] ? bus_add_driver+0x9d/0x1b0
   [<783008c3>] ? driver_register+0x47/0xa3
   [<7813db00>] ? timespec_to_ktime+0x9/0xc
   [<782b7331>] ? acpi_bus_register_driver+0x3a/0x3c
   [<78878592>] ? acpi_fan_init+0xd/0x2c
   [<78863656>] ? kernel_init+0xac/0x1f9
   [<788635aa>] ? kernel_init+0x0/0x1f9
   [<78114563>] ? kernel_thread_helper+0x7/0x10
   =======================
  Code: 6e 78 e8 57 44 e7 ff 58 e9 93 00 00 00 8b 55 f0 8d bb f4 02 00 00 80 4b 2d 10 8b 03 e8 87 cb ff ff 8d 83 18 03 00 00 80 63 2d ef <ff> 35 00 00 00 00 50 68 e8 9c 6e 78 e8 22 44 e7 ff b9 b6 9c 6e
  EIP: [<782b8ad0>] acpi_fan_add+0x7d/0xfd SS:ESP 0068:b782cecc
  ---[ end trace 778e504de7e3b1e3 ]---
  Kernel panic - not syncing: Attempted to kill init!

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-03-28 10:16:53 -07:00
..
acorn/char Fix default compose table initialization 2008-03-03 14:53:16 -08:00
acpi revert "ACPI: drivers/acpi: elide a non-zero test on a result that is never 0" 2008-03-28 10:16:53 -07:00
amba
ata [libata] ahci: SB600 workaround is suspect... play it safe for now 2008-03-24 22:40:40 -04:00
atm fore2000 - fix misannotations 2008-03-17 07:56:31 -04:00
auxdisplay
base driver core: debug for bad dev_attr_show() return value. 2008-03-24 22:33:49 -07:00
block Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block 2008-03-18 07:43:14 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-03-12 13:08:09 -07:00
cdrom make cdrom.c:check_for_audio_disc() static 2008-03-04 11:28:41 +01:00
char hw_random doc updates 2008-03-24 19:22:19 -07:00
clocksource
connector connector: convert to single-threaded workqueue 2008-03-23 21:51:12 -07:00
cpufreq [CPUFREQ] fix section mismatch warnings 2008-03-05 14:45:31 -05:00
cpuidle cpuidle: fix 100% C0 statistics regression 2008-03-26 00:58:19 -04:00
crypto [HIFN]: Fix invalid config ifdefs for RNG support 2008-02-15 19:15:05 +08:00
dca DCA: convert struct class_device to struct device. 2008-02-08 15:33:33 -08:00
dio dio: ARRAY_SIZE() cleanup 2008-02-05 09:44:23 -08:00
dma fsldma: Fix the DMA halt when using DMA_INTERRUPT async_tx transfer. 2008-03-18 17:00:59 -07:00
edac drivers/edac/i3000: document type promotion 2008-02-07 08:42:23 -08:00
eisa
firewire firewire: fix panic in handle_at_packet 2008-03-20 18:13:05 +01:00
firmware dmi: prevent linked list corruption 2008-02-23 17:12:15 -08:00
gpio gpio/pca953x bugfix: mark as can_sleep 2008-03-10 18:01:19 -07:00
hid HID: update key codes for Apple aluminium 2008-03-18 11:20:33 +01:00
hwmon ibmpex: report temperatures in mC, not C 2008-03-19 18:53:36 -07:00
i2c i2c: Fix docbook problem 2008-03-23 20:28:20 +01:00
ide Revert "ide-tape: schedule driver for removal after 6 months" 2008-03-22 16:44:27 +01:00
ieee1394 ieee1394: sbp2: fix for SYM13FW500 bridge (Datafab disk) 2008-03-14 00:56:59 +01:00
infiniband RDMA/nes: Fix MSS calculation on RDMA path 2008-03-21 13:59:28 -07:00
input Input: ALPS - fix forward/back buttons reversed on Acer 5520-5290 2008-03-18 00:39:55 -04:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-03-12 13:08:09 -07:00
leds PWM LED driver 2008-02-08 09:22:38 -08:00
lguest lguest: comment documentation update. 2008-03-28 11:05:54 +11:00
macintosh [POWERPC] Fix build of modular drivers/macintosh/apm_emu.c 2008-03-13 10:09:27 +11:00
mca
md drivers/md/raid5.c: fix printk warnings 2008-03-19 18:53:37 -07:00
media V4L/DVB (7367): bug #10211: Fix depencencies for cx2341x 2008-03-20 12:39:02 -03:00
memstick memstick: optimize setup of JMicron host parameters 2008-03-19 18:53:37 -07:00
message [SCSI] mpt fusion: Power Management fixes for MPT SAS PCI-E controllers 2008-03-18 15:13:40 -05:00
mfd sm501: add support for the SM502 programmable PLL 2008-03-04 16:35:13 -08:00
misc Merge branches 'release', 'ejd', 'sony' and 'wmi' into release 2008-03-13 01:59:52 -04:00
mmc mmc: use sysfs groups to handle conditional attributes 2008-03-22 17:02:20 -07:00
mtd mtd: memory corruption in block2mtd.c 2008-03-24 19:22:19 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-03-26 18:35:50 -07:00
nubus nubus: kill drivers/nubus/nubus_syms.c 2008-02-05 09:44:23 -08:00
of [POWERPC] Create and hook up of_platform_device_shutdown 2008-02-06 16:29:59 +11:00
oprofile d_path: Make get_dcookie() use a struct path argument 2008-02-14 21:17:08 -08:00
parisc [PARISC] make ptr_to_pide() static 2008-03-15 19:17:12 -07:00
parport parport: section fixup 2008-02-13 16:21:19 -08:00
pci Revert "PCI: remove transparent bridge sizing" 2008-03-26 11:22:40 -07:00
pcmcia PCI: drivers/pcmcia/i82092.c: fix up after pci_bus_region changes 2008-02-21 15:34:35 -08:00
pnp pnpacpi: reduce printk severity for "pnpacpi: exceeded the max number of ..." 2008-03-26 14:22:20 -04:00
power Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2008-02-07 09:45:58 -08:00
ps3 [POWERPC] PS3: Update sys-manager button events 2008-02-14 22:11:01 +11:00
rapidio docbook: fix rapidio source files 2008-03-03 10:47:13 -08:00
rtc rtc-at91sam9 fixes 2008-03-19 18:53:37 -07:00
s390 [S390] zcrypt: fix ap_device_list handling 2008-03-05 12:37:19 +01:00
sbus
scsi [SCSI] a100u2w: fix bitmap lookup routine 2008-03-20 09:19:25 -05:00
serial serial: sh-sci: Fix fifo stall on SH7760/SH7780/SH7785 SCIF. 2008-03-11 13:58:50 +09:00
sh maple: fix device detection 2008-02-26 14:12:09 +09:00
sn ioc3.c: replace remaining __FUNCTION__ occurrences 2008-03-17 08:11:48 -04:00
spi spi_bitbang: short transfer status fix 2008-03-13 13:11:43 -07:00
ssb ssb: Add pcibios_enable_device() return value check 2008-03-04 18:36:35 -05:00
tc
telephony
thermal thermal: delete "default y" 2008-03-18 01:22:10 -04:00
uio UIO: add pgprot_noncached() to UIO mmap code 2008-03-24 22:33:49 -07:00
usb USB: ehci: stop vt6212 bus hogging 2008-03-24 22:26:15 -07:00
video fbdev: defio and Metronomefb 2008-03-19 18:53:37 -07:00
virtio virtio_pci: unregister virtio device at device remove 2008-03-28 11:05:51 +11:00
w1 ds1wm: report bus reset error 2008-03-04 16:35:12 -08:00
watchdog [WATCHDOG] make watchdog/hpwdt.c:asminline_call() static 2008-03-06 21:32:21 +00:00
xen
zorro
Kconfig memstick: initial commit for Sony MemoryStick support 2008-02-09 11:08:34 -08:00
Makefile memstick: initial commit for Sony MemoryStick support 2008-02-09 11:08:34 -08:00