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linux-sg2042
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Fengguang Wu e47c6a3408 clk: validate pointer in __clk_disable() 
clk_get() returns -ENOENT on error and some careless caller might
dereference it without error checking:

In mxc_rnga_remove():

        struct clk *clk = clk_get(&pdev->dev, "rng");

	// ...

        clk_disable(clk);

Since it's insane to audit the lots of existing and future clk users,
let's add a check in the callee to avoid kernel panic and warn about
any buggy user.

Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Viresh Kumar <viresh.kumar@st.com>
Cc: viresh kumar <viresh.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
 		2012-07-30 17:25:13 -07:00
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accessibility
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acpi Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-07-26 14:28:55 -07:00
amba Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
ata ata/pata_arasan: remove conditional compilation of clk code 2012-07-30 17:25:12 -07:00
atm
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auxdisplay
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base Driver core merge for 3.6-rc1 2012-07-26 11:25:33 -07:00
bcma Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem 2012-07-27 11:15:03 -04:00
block Power management updates for 3.6 2012-07-22 13:36:52 -07:00
bluetooth Bluetooth: Introduce a flags variable to Three-wire UART state 2012-07-17 14:49:24 -03:00
cdrom
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char Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2012-07-26 14:18:18 -07:00
clk clk: validate pointer in __clk_disable() 2012-07-30 17:25:13 -07:00
clocksource arm-soc: new SoC support 2012-07-23 16:31:31 -07:00
connector drivers: connector: fixed coding style issues 2012-07-16 23:23:52 -07:00
cpufreq Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-07-24 13:34:56 -07:00
cpuidle Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-07-26 14:28:55 -07:00
crypto ARM: SoC fixes 2012-07-26 20:29:52 -07:00
dca
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devfreq
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dio
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dma Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-07-24 17:12:54 -07:00
edac
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eisa
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extcon extcon: MAX77693: Add extcon-max77693 driver to support Maxim MAX77693 MUIC device 2012-07-17 10:34:56 -07:00
firewire
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firmware pcdp: use early_ioremap/early_iounmap to access pcdp table 2012-07-30 17:25:11 -07:00
gpio GPIO changes for v3.6: 2012-07-26 13:56:38 -07:00
gpu Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2012-07-26 14:18:18 -07:00
hid Merge branch 'next' into for-linus 2012-07-24 22:43:04 -07:00
hsi
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hv Drivers: hv: Change the hex constant to a decimal constant 2012-07-19 15:27:33 -07:00
hwmon Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-07-24 13:34:56 -07:00
hwspinlock
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i2c i2c/i2c-pxa: remove conditional compilation of clk code 2012-07-30 17:25:12 -07:00
ide
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idle Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-07-26 14:28:55 -07:00
ieee802154 drivers/ieee802154/at86rf230: rework irq handler 2012-07-12 07:54:45 -07:00
iio iio: fix pointer cast warning 2012-07-15 17:33:17 +01:00
infiniband InfiniBand/RDMA changes for the 3.6 merge window: 2012-07-24 13:56:26 -07:00
input Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
iommu IOMMU Updates for Linux v3.6-rc1 2012-07-24 16:24:11 -07:00
isdn ISDN: Add check for usb_alloc_urb() result 2012-07-18 09:40:54 -07:00
leds leds-lp8788: forgotten unlock at lp8788_led_work 2012-07-27 08:16:07 +08:00
lguest
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macintosh
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md Three fixes for device-mapper discard processing: 2012-07-20 11:51:22 -07:00
media Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-07-24 13:34:56 -07:00
memory
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memstick
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message
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mfd Merge branch 'i2c-embedded/for-next' of git://git.pengutronix.de/git/wsa/linux 2012-07-28 13:43:12 -07:00
misc CHAR/MISC patches for 3.6-rc1 2012-07-26 12:15:41 -07:00
mmc ARM: SoC fixes 2012-07-26 20:29:52 -07:00
mtd Merge branch 'v3.5-rc7-fixes' of git://github.com/lunn/linux into fixes 2012-07-25 21:37:09 +02:00
net net/stmmac: remove conditional compilation of clk code 2012-07-30 17:25:12 -07:00
nfc NFC: Add ISO 14443 type B protocol 2012-07-09 16:42:24 -04:00
nubus
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of Devicetree updates for 3.6 2012-07-24 14:07:22 -07:00
oprofile
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parisc PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
parport
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pci PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
pcmcia Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
pinctrl Pin control changes for v3.6: 2012-07-24 14:05:46 -07:00
platform Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2012-07-26 14:28:55 -07:00
pnp
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power Driver core merge for 3.6-rc1 2012-07-26 11:25:33 -07:00
pps
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ps3
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ptp
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rapidio
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regulator SCSI misc on 20120724 2012-07-24 18:11:22 -07:00
remoteproc A batch of remoteproc patches for 3.6: 2012-07-26 16:19:08 -07:00
rpmsg A batch of remoteproc patches for 3.6: 2012-07-26 16:19:08 -07:00
rtc Merge branch 'v3.5-rc7-fixes' of git://github.com/lunn/linux into fixes 2012-07-25 21:37:09 +02:00
s390 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2012-07-26 18:09:01 -07:00
sbus
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scsi Merge branch 'master' [vanilla Linus master] into libata-dev.git/upstream 2012-07-25 15:58:48 -04:00
sfi
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sh Merge branch 'common/pinctrl' into sh-latest 2012-07-20 16:42:59 +09:00
sn
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spi spi: Updates for 3.6 2012-07-26 12:57:41 -07:00
ssb
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staging Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux 2012-07-26 14:18:18 -07:00
target iscsi-target: Drop bogus struct file usage for iSCSI/SCTP 2012-07-21 02:44:13 -07:00
tc
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thermal Merge branches 'acpi_pad', 'acpica', 'apei-bugzilla-43282', 'battery', 'cpuidle-coupled', 'cpuidle-tweaks', 'intel_idle-ivb', 'ost', 'red-hat-bz-772730', 'thermal', 'thermal-spear' and 'turbostat-v2' into release 2012-07-26 00:03:58 -04:00
tty Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
uio
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usb usb/host/r8a66597: remove conditional compilation of clk code 2012-07-30 17:25:12 -07:00
uwb
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vhost vhost: make vhost work queue visible 2012-07-22 01:22:23 +03:00
video radeonfb: Add quirk for the graphics adapter in some JSxx 2012-07-27 11:42:33 +10:00
virt
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virtio [SCSI] virtio-scsi: Add vdrv->scan for post VIRTIO_CONFIG_S_DRIVER_OK LUN scanning 2012-07-20 08:59:03 +01:00
vlynq
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vme VME: Prevent D16 cycles being split into 8-bit blocks 2012-07-19 15:39:39 -07:00
w1 Driver core merge for 3.6-rc1 2012-07-26 11:25:33 -07:00
watchdog Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm 2012-07-27 15:14:26 -07:00
xen PCI changes for the 3.6 merge window: 2012-07-24 16:17:07 -07:00
zorro
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Kconfig
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Makefile
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