Wolfram Sang e920ebc2f8 [media] soc_camera: cleanup control device on async_unbind ... I got the following WARN on a simple unbind/bind cycle: root@Lager:/sys/bus/i2c/drivers/adv7180# echo 6-0020 > unbind root@Lager:/sys/bus/i2c/drivers/adv7180# echo 6-0020 > bind [ 31.097652] adv7180 6-0020: chip found @ 0x20 (e6520000.i2c) [ 31.123744] ------------[ cut here ]------------ [ 31.128413] WARNING: CPU: 3 PID: 873 at drivers/media/platform/soc_camera/soc_camera.c:1463 soc_camera_async_bound+0x40/0xa0() [ 31.139896] CPU: 3 PID: 873 Comm: sh Not tainted 4.4.0-rc3-00062-ge8ae2c0b6bca2a #172 [ 31.147815] Hardware name: Generic R8A7790 (Flattened Device Tree) [ 31.154056] Backtrace: [ 31.156575] [<c0014bc0>] (dump_backtrace) from [<c0014d80>] (show_stack+0x20/0x24) [ 31.164233] r6:c05c5b33 r5:00000009 r4:00000000 r3:00404100 [ 31.170017] [<c0014d60>] (show_stack) from [<c01e2344>] (dump_stack+0x78/0x94) [ 31.177344] [<c01e22cc>] (dump_stack) from [<c0029e7c>] (warn_slowpath_common+0x98/0xc4) [ 31.185518] r4:00000000 r3:00000000 [ 31.189172] [<c0029de4>] (warn_slowpath_common) from [<c0029fa0>] (warn_slowpath_null+0x2c/0x34) [ 31.198043] r8:eb38df28 r7:eb38c5d0 r6:eb38de80 r5:e6962810 r4:eb38de80 [ 31.204898] [<c0029f74>] (warn_slowpath_null) from [<c0356348>] (soc_camera_async_bound+0x40/0xa0) [ 31.213955] [<c0356308>] (soc_camera_async_bound) from [<c03499a0>] (v4l2_async_test_notify+0x9c/0x108) [ 31.223430] r5:eb38c5ec r4:eb38de80 [ 31.227084] [<c0349904>] (v4l2_async_test_notify) from [<c0349dd8>] (v4l2_async_register_subdev+0x88/0xd0) [ 31.236822] r7:c07115c8 r6:c071160c r5:eb38c5ec r4:eb38de80 [ 31.242622] [<c0349d50>] (v4l2_async_register_subdev) from [<c0337040>] (adv7180_probe+0x2c8/0x3a4) [ 31.251753] r8:00000000 r7:00000001 r6:eb38de80 r5:ea973400 r4:eb38de10 r3:00000000 [ 31.259660] [<c0336d78>] (adv7180_probe) from [<c032dd80>] (i2c_device_probe+0x1a0/0x1e4) This gets fixed by clearing the control device pointer on async_unbind. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>		2016-01-25 08:54:39 -02:00
..
atmel-isi.c	[media] media: videobuf2: Move timestamp to vb2_buffer	2015-12-18 13:53:31 -02:00
atmel-isi.h	[media] atmel-isi: add code to setup correct resolution for preview path	2015-11-17 15:29:39 -02:00
Kconfig	[media] disable COMPILE_TEST for omap1_camera	2014-09-09 18:07:39 -03:00
Makefile	[media] media: mx1_camera: Remove driver	2014-06-17 12:04:53 -03:00
mx2_camera.c	[media] media: videobuf2: Move timestamp to vb2_buffer	2015-12-18 13:53:31 -02:00
mx3_camera.c	[media] media: videobuf2: Move timestamp to vb2_buffer	2015-12-18 13:53:31 -02:00
omap1_camera.c	[media] include/media: move platform_data to linux/platform_data/media	2015-11-17 06:58:42 -02:00
pxa_camera.c	[media] move media platform data to linux/platform_data/media	2015-11-19 08:09:38 -02:00
rcar_vin.c	[media] media: videobuf2: Move timestamp to vb2_buffer	2015-12-18 13:53:31 -02:00
sh_mobile_ceu_camera.c	[media] media: videobuf2: Move timestamp to vb2_buffer	2015-12-18 13:53:31 -02:00
sh_mobile_csi2.c	[media] include/media: move driver interface headers to a separate dir	2015-11-17 06:57:29 -02:00
soc_camera_platform.c	[media] include/media: move platform_data to linux/platform_data/media	2015-11-17 06:58:42 -02:00
soc_camera.c	[media] soc_camera: cleanup control device on async_unbind	2016-01-25 08:54:39 -02:00
soc_mediabus.c	[media] include/media: move driver interface headers to a separate dir	2015-11-17 06:57:29 -02:00
soc_scale_crop.c	[media] v4l2: replace s_mbus_fmt by set_fmt in bridge drivers	2015-05-01 09:01:16 -03:00
soc_scale_crop.h	[media] V4L2: soc-camera: move generic functions into a separate file	2013-06-28 15:03:16 -03:00