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55b0baa254
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Dong Aisheng 55b0baa254 soc: imx: gpc: fix gpc clk get error handling 
We got a following kernel crash once supplying one more IPG
clock in GPC node in devicetree. The original error handling of
clocks get is a bit wrong that when reaching the maximum clock
get error, the index 'i' is already GPC_CLK_MAX which can't be used
as the array index for clk_put operations.

[    3.000110] imx-gpc 20dc000.gpc: more than 6 clocks
[    3.005141] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[    3.013487] pgd = c0004000
[    3.016300] [00000000] *pgd=00000000
[    3.020060] Internal error: Oops: 805 [#1] SMP ARM
[    3.024957] Modules linked in:
[    3.028122] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G        W       4.11.0-rc1-00056-g813791b-dirty #1140
[    3.037801] Hardware name: Freescale i.MX6 Quad/DualLite (Device Tree)
[    3.044435] task: ef298000 task.stack: ef294000
[    3.049080] PC is at __clk_put+0x38/0xec
[    3.053103] LR is at 0x7f54ce9a
[    3.056345] pc : [<c0537984>]    lr : [<7f54ce9a>]    psr: 60000013
[    3.056345] sp : ef295d48  ip : c8a582b2  fp : ef295d64
[    3.068026] r10: ee9fc400  r9 : 00000000  r8 : ef398c10
[    3.073354] r7 : ef398c10  r6 : c1071264  r5 : c10710f0  r4 : eea5be80
[    3.079986] r3 : 00000000  r2 : 00000000  r1 : 00000100  r0 : 00000001
[    3.086621] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[    3.093863] Control: 10c5387d  Table: 1000404a  DAC: 00000051
[    3.099712] Process swapper/0 (pid: 1, stack limit = 0xef294210)
[    3.105823] Stack: (0xef295d48 to 0xef296000)
...
[    3.292660] Backtrace:
[    3.295222] [<c053794c>] (__clk_put) from [<c0531028>] (clk_put+0x18/0x1c)
[    3.302206]  r6:c1071264 r5:c10710f0 r4:c107124c r3:00000001
[    3.307977] [<c0531010>] (clk_put) from [<c0546ba0>] (imx_pgc_get_clocks+0x64/0x78)
[    3.315747] [<c0546b3c>] (imx_pgc_get_clocks) from [<c0547124>] (imx_gpc_probe+0x204/0x31c)
[    3.324209]  r7:00000000 r6:c1070eb0 r5:00000001 r4:ef398c00
[    3.329980] [<c0546f20>] (imx_gpc_probe) from [<c05e65f0>] (platform_drv_probe+0x5c/0xc0)
[    3.338270]  r10:c0f00608 r9:00000000 r8:00000000 r7:fffffdfb r6:c1070f20 r5:ef398c10
[    3.346207]  r4:ef398c10
[    3.348849] [<c05e6594>] (platform_drv_probe) from [<c05e4250>] (driver_probe_device+0x214/0x2ec)
[    3.357835]  r7:c1070f20 r6:00000000 r5:c18cea74 r4:ef398c10
[    3.363607] [<c05e403c>] (driver_probe_device) from [<c05e43ec>] (__driver_attach+0xc4/0xc8)
[    3.372159]  r9:c0f8b858 r8:c0f8b850 r7:00000000 r6:ef398c44 r5:c1070f20 r4:ef398c10
[    3.380017] [<c05e4328>] (__driver_attach) from [<c05e21fc>] (bus_for_each_dev+0x7c/0xb0)
[    3.388304]  r6:c05e4328 r5:c1070f20 r4:00000000 r3:00000000
[    3.394074] [<c05e2180>] (bus_for_each_dev) from [<c05e3bc4>] (driver_attach+0x28/0x30)
[    3.402188]  r6:c107f3e8 r5:eea5be00 r4:c1070f20
[    3.406913] [<c05e3b9c>] (driver_attach) from [<c05e3740>] (bus_add_driver+0x19c/0x224)
[    3.415034] [<c05e35a4>] (bus_add_driver) from [<c05e52fc>] (driver_register+0x88/0x108)
[    3.423235]  r7:c10e1000 r6:00000000 r5:c0f57d2c r4:c1070f20
[    3.429004] [<c05e5274>] (driver_register) from [<c05e6534>] (__platform_driver_register+0x40/0x54)
[    3.438160]  r5:c0f57d2c r4:00000006
[    3.441846] [<c05e64f4>] (__platform_driver_register) from [<c0f57d44>] (imx_gpc_driver_init+0x18/0x20)
[    3.451360] [<c0f57d2c>] (imx_gpc_driver_init) from [<c010200c>] (do_one_initcall+0x4c/0x180)
[    3.460008] [<c0101fc0>] (do_one_initcall) from [<c0f00e40>] (kernel_init_freeable+0x130/0x1f8)
[    3.468820]  r9:c0f8b858 r8:c0f8b850 r6:c0fc2414 r5:c10e1000 r4:00000006
[    3.475637] [<c0f00d10>] (kernel_init_freeable) from [<c0ae6aec>] (kernel_init+0x18/0x124)
[    3.484014]  r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0ae6ad4
[    3.491951]  r4:00000000
[    3.494590] [<c0ae6ad4>] (kernel_init) from [<c01088d0>] (ret_from_fork+0x14/0x24)
[    3.502267]  r4:00000000 r3:ef294000
[    3.505947] Code: e5943014 e5942018 e3530000 e3a01c01 (e5823000)
[    3.512215] ---[ end trace 375f9f2a5ddeff3c ]---
[    3.517036] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

Cc: Lucas Stach <l.stach@pengutronix.de>
Fixes: 721cabf6c6 ("soc: imx: move PGC handling to a new GPC driver")
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2017-03-24 13:41:30 +08:00
..
accessibility
acpi Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm 2017-03-03 16:48:48 -08:00
amba
android sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
ata SCSI misc on 20170303 2017-03-03 21:36:56 -08:00
atm sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
auxdisplay
base Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-03-03 11:38:56 -08:00
bcma
block SCSI misc on 20170303 2017-03-03 21:36:56 -08:00
bluetooth btmrvl: fix spelling mistake: "actived" -> "activated" 2017-02-19 00:26:37 +01:00
bus ARM: SoC driver updates 2017-02-23 15:57:04 -08:00
cdrom Merge branch 'for-4.11/next' into for-4.11/linus-merge 2017-02-17 14:08:19 -07:00
char Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
clk ARM: SoC: late DT updates for v4.11 2017-03-03 16:15:48 -08:00
clocksource sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h> 2017-03-02 08:42:27 +01:00
connector
cpufreq Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
cpuidle Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-03-04 10:42:53 -08:00
dax sched/headers: Prepare to remove the <linux/magic.h> include from <linux/sched/task_stack.h> 2017-03-02 08:42:40 +01:00
dca
devfreq scripts/spelling.txt: add "followings" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
dio
dma sched/headers: Prepare to move the get_task_struct()/put_task_struct() and related APIs from <linux/sched.h> to <linux/sched/task.h> 2017-03-02 08:42:40 +01:00
dma-buf sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
edac Merge branch 'ras-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-02-20 12:47:44 -08:00
eisa
extcon scripts/spelling.txt: add "swithc" pattern and fix typo instances 2017-02-27 18:43:46 -08:00
firewire Merge branch 'idr-4.11' of git://git.infradead.org/users/willy/linux-dax 2017-02-28 20:29:41 -08:00
firmware sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h> 2017-03-02 08:42:27 +01:00
fmc
fpga
fsi
gpio This is the bulk of GPIO changes for the v4.11 cycle 2017-02-23 08:46:04 -08:00
gpu Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
hid sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
hsi sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
hv sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
hwmon scripts/spelling.txt: add "followings" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
hwspinlock
hwtracing mm, fs: reduce fault, page_mkwrite, and pfn_mkwrite to take only vmf 2017-02-24 17:46:54 -08:00
i2c sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
ide sched/headers: Prepare for new header dependencies before moving code to <linux/sched/task_stack.h> 2017-03-02 08:42:36 +01:00
idle Power management turbostat utility updates for v4.11-rc1 2017-03-02 17:41:27 -08:00
iio Staging/IIO driver fixes for 4.11-rc1 2017-03-04 11:26:18 -08:00
infiniband sched/headers: Prepare to move the get_task_struct()/put_task_struct() and related APIs from <linux/sched.h> to <linux/sched/task.h> 2017-03-02 08:42:40 +01:00
input Input: rmi4 - f30: detect INPUT_PROP_BUTTONPAD from the button count 2017-03-01 10:01:56 -08:00
iommu sched/headers: Prepare for new header dependencies before moving code to <linux/sched/mm.h> 2017-03-02 08:42:28 +01:00
ipack
irqchip IOMMU Updates for Linux v4.11 2017-02-20 16:42:43 -08:00
isdn sched/headers: Prepare to move cputime functionality from <linux/sched.h> into <linux/sched/cputime.h> 2017-03-02 08:42:39 +01:00
leds sched/headers: Prepare for new header dependencies before moving code to <linux/sched/loadavg.h> 2017-03-02 08:42:27 +01:00
lguest sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
lightnvm
macintosh sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
mailbox sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
mcb
md Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
media sched/headers: Prepare to remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-02 08:42:37 +01:00
memory ARM: SoC driver updates 2017-02-23 15:57:04 -08:00
memstick Merge branch 'for-4.11/next' into for-4.11/linus-merge 2017-02-17 14:08:19 -07:00
message SCSI misc on 20170220 2017-02-21 11:51:42 -08:00
mfd staging/iio driver patches for 4.11-rc1 2017-02-22 12:14:01 -08:00
misc Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
mmc sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h> 2017-03-02 08:42:27 +01:00
mtd Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-03-03 11:38:56 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-03-04 17:31:39 -08:00
nfc scripts/spelling.txt: add "omited" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
ntb ntb: ntb_hw_intel: link_poll isn't clearing the pending status properly 2017-02-16 23:11:26 -05:00
nubus
nvdimm nfit, libnvdimm: fix interleave set cookie calculation 2017-03-01 00:49:42 -08:00
nvme Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2017-03-03 10:53:35 -08:00
nvmem
of DeviceTree updates for 4.11: 2017-02-22 19:23:14 -08:00
oprofile sched/headers: Prepare to move the get_task_struct()/put_task_struct() and related APIs from <linux/sched.h> to <linux/sched/task.h> 2017-03-02 08:42:40 +01:00
parisc Merge branch 'parisc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux 2017-03-03 16:20:06 -08:00
parport sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
pci pci-v4.11-fixes-1 2017-03-03 16:44:21 -08:00
pcmcia
perf sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h> 2017-03-02 08:42:27 +01:00
phy pci-v4.11-changes 2017-02-23 11:53:22 -08:00
pinctrl scripts/spelling.txt: add "overrided" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
platform sched/headers: Prepare for new header dependencies before moving code to <linux/sched/loadavg.h> 2017-03-02 08:42:27 +01:00
pnp
power scripts/spelling.txt: add "intialization" pattern and fix typo instances 2017-02-27 18:43:47 -08:00
powercap
pps
ps3 sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
ptp 4.11 is going to be a relatively large release for KVM, with a little over 2017-02-22 18:22:53 -08:00
pwm pwm: Changes for v4.11-rc1 2017-03-01 09:46:02 -08:00
rapidio rapidio: use get_user_pages_unlocked() 2017-02-27 18:43:45 -08:00
ras
regulator regulator: Updates for v4.11 2017-02-20 17:23:57 -08:00
remoteproc virtio, vhost: optimizations, fixes 2017-03-02 13:53:13 -08:00
reset ARM: SoC driver updates 2017-02-23 15:57:04 -08:00
rpmsg virtio, vhost: optimizations, fixes 2017-03-02 13:53:13 -08:00
rtc sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
s390 Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
sbus
scsi SCSI misc on 20170303 2017-03-03 21:36:56 -08:00
sfi
sh
sn
soc soc: imx: gpc: fix gpc clk get error handling 2017-03-24 13:41:30 +08:00
spi sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h> 2017-03-02 08:42:27 +01:00
spmi
ssb
staging Staging/IIO driver fixes for 4.11-rc1 2017-03-04 11:26:18 -08:00
target Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
tc
thermal sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h> 2017-03-02 08:42:27 +01:00
thunderbolt
tty sched/headers: Prepare to move the get_task_struct()/put_task_struct() and related APIs from <linux/sched.h> to <linux/sched/task.h> 2017-03-02 08:42:40 +01:00
uio sched/headers: Prepare to move signal wakeup & sigpending methods from <linux/sched.h> into <linux/sched/signal.h> 2017-03-02 08:42:32 +01:00
usb Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
uwb
vfio sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
vhost Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
video sched/headers: Remove the <linux/mm_types.h> dependency from <linux/sched.h> 2017-03-03 01:45:16 +01:00
virt
virtio Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
vlynq
vme
w1 sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
watchdog watchdog: retu: restore MFD dependency 2017-03-01 06:15:10 -08:00
xen sched/headers: Prepare to remove <linux/cred.h> inclusion from <linux/sched.h> 2017-03-02 08:42:31 +01:00
zorro
Kconfig
Makefile pci-v4.11-changes 2017-02-23 11:53:22 -08:00