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linux/drivers/pwm
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Sachin Kamat b577cdcf17 pwm: samsung: Fix kernel warning while unexporting a channel 
PWM channel data was set to NULL before freeing it. This caused the
following kernel warning while unexporting the channel. Set the channel
data to NULL after freeing it.

[   70.495000] WARNING: CPU: 0 PID: 1 at drivers/base/devres.c:805 pwm_put+0x48/0x80()
[   70.505000] Modules linked in:
[   70.505000] CPU: 0 PID: 1 Comm: sh Not tainted 3.12.0-rc6-next-20131024-00012-gd4aec04-dirty #58
[   70.515000] [<c0014ddc>] (unwind_backtrace+0x0/0xf4) from [<c0011784>] (show_stack+0x10/0x14)
[   70.525000] [<c0011784>] (show_stack+0x10/0x14) from [<c03a3cbc>] (dump_stack+0x7c/0xb0)
[   70.530000] [<c03a3cbc>] (dump_stack+0x7c/0xb0) from [<c001de68>] (warn_slowpath_common+0x6c/0x88)
[   70.540000] [<c001de68>] (warn_slowpath_common+0x6c/0x88) from [<c001df20>] (warn_slowpath_null+0x1c/0x24)
[   70.550000] [<c001df20>] (warn_slowpath_null+0x1c/0x24) from [<c01d1af8>] (pwm_put+0x48/0x80)
[   70.560000] [<c01d1af8>] (pwm_put+0x48/0x80) from [<c01d21c8>] (pwm_unexport_store+0x94/0xac)
[   70.565000] [<c01d21c8>] (pwm_unexport_store+0x94/0xac) from [<c010991c>] (sysfs_write_file+0x148/0x1d8)
[   70.575000] [<c010991c>] (sysfs_write_file+0x148/0x1d8) from [<c00b2a80>] (vfs_write+0xb4/0x1a0)
[   70.585000] [<c00b2a80>] (vfs_write+0xb4/0x1a0) from [<c00b3068>] (SyS_write+0x3c/0x78)
[   70.595000] [<c00b3068>] (SyS_write+0x3c/0x78) from [<c000e2e0>] (ret_fast_syscall+0x0/0x30)

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
 		2013-11-01 11:17:57 +01:00
..
Kconfig pwm: add ep93xx PWM support 2013-10-17 16:07:19 +02:00
Makefile pwm: add ep93xx PWM support 2013-10-17 16:07:19 +02:00
core.c pwm: Use the DT macro directly when parsing PWM DT flags 2013-09-03 13:08:10 +02:00
pwm-ab8500.c pwm: ab8500: Add .owner to struct pwm_ops 2013-04-02 11:29:11 +02:00
pwm-atmel-tcb.c pwm: atmel-tcb: fix max time computation for slow clk source 2013-09-19 14:04:32 +02:00
pwm-bfin.c pwm: Fill in missing .owner fields 2013-06-12 13:18:29 +02:00
pwm-ep93xx.c pwm: add ep93xx PWM support 2013-10-17 16:07:19 +02:00
pwm-imx.c pwm: imx: Remove redundant of_match_ptr 2013-10-08 15:49:38 +02:00
pwm-jz4740.c pwm: remove use of __devexit 2012-11-28 12:23:41 -08:00
pwm-lpc32xx.c pwm: lpc32xx: Remove redundant of_match_ptr 2013-10-08 15:49:19 +02:00
pwm-mxs.c pwm: mxs: Remove redundant of_match_ptr 2013-10-08 15:49:10 +02:00
pwm-pca9685.c pwm: pca9685: Fix wrong argument to set MODE1_SLEEP bit 2013-06-26 23:23:54 +02:00
pwm-puv3.c pwm: Fill in missing .owner fields 2013-06-12 13:18:29 +02:00
pwm-pxa.c pwm: pxa: Use module_platform_driver 2013-09-03 13:09:17 +02:00
pwm-renesas-tpu.c pwm: simplify use of devm_ioremap_resource 2013-09-03 13:09:16 +02:00
pwm-samsung.c pwm: samsung: Fix kernel warning while unexporting a channel 2013-11-01 11:17:57 +01:00
pwm-spear.c pwm: simplify use of devm_ioremap_resource 2013-09-03 13:09:16 +02:00
pwm-tegra.c pwm: Fill in missing .owner fields 2013-06-12 13:18:29 +02:00
pwm-tiecap.c pwm: don't use devm_pinctrl_get_select_default() in probe 2013-10-15 12:16:35 +02:00
pwm-tiehrpwm.c pwm: don't use devm_pinctrl_get_select_default() in probe 2013-10-15 12:16:35 +02:00
pwm-tipwmss.c drivers/pwm: don't check resource with devm_ioremap_resource 2013-05-18 11:55:58 +02:00
pwm-tipwmss.h pwm: davinci: Add Kconfig support for ECAP & EHRPWM devices 2013-03-22 11:35:20 +01:00
pwm-twl-led.c pwm: twl-led: Include linux/of.h header 2013-10-08 15:45:44 +02:00
pwm-twl.c pwm: twl: Include linux/of.h header 2013-10-08 15:45:44 +02:00
pwm-vt8500.c drivers/pwm: don't check resource with devm_ioremap_resource 2013-05-18 11:55:58 +02:00
sysfs.c pwm: convert class code to use dev_groups 2013-07-29 09:08:33 +02:00