From 8c6ecdd7ce11e737eeffbd78fd6a9d4c47d0b26d Mon Sep 17 00:00:00 2001 From: Sylwester Nawrocki Date: Tue, 5 Feb 2013 15:43:08 -0300 Subject: [PATCH] [media] s5p-fimc: Do not attempt to disable not enabled media pipeline This fixes following warnings when all links are being disconnected: [ 20.080000] WARNING: at drivers/media/platform/s5p-fimc/fimc-mdevice.c:1269 __fimc_md_set_camclk+0x208/0x20c() [ 20.090000] Modules linked in: [ 20.095000] [] (unwind_backtrace+0x0/0x13c) from [] (warn_slowpath_common+0x54/0x64) [ 20.105000] [] (warn_slowpath_common+0x54/0x64) from [] (warn_slowpath_null+0x1c/0x24) [ 20.115000] [] (warn_slowpath_null+0x1c/0x24) from [] (__fimc_md_set_camclk+0x208/0x20c) [ 20.125000] [] (__fimc_md_set_camclk+0x208/0x20c) from [] (__fimc_pipeline_close+0x38/0x48) [ 20.135000] [] (__fimc_pipeline_close+0x38/0x48) from [] (fimc_md_link_notify+0x10c/0x198) [ 20.145000] [] (fimc_md_link_notify+0x10c/0x198) from [] (__media_entity_setup_link+0x1c0/0x1e8) [ 20.155000] [] (__media_entity_setup_link+0x1c0/0x1e8) from [] (media_device_ioctl+0x2c0/0x41c) [ 20.165000] [] (media_device_ioctl+0x2c0/0x41c) from [] (media_ioctl+0x30/0x34) [ 20.175000] [] (media_ioctl+0x30/0x34) from [] (do_vfs_ioctl+0x84/0x5e8) [ 20.185000] [] (do_vfs_ioctl+0x84/0x5e8) from [] (sys_ioctl+0x3c/0x60) [ 20.190000] [] (sys_ioctl+0x3c/0x60) from [] (ret_fast_syscall+0x0/0x30) Signed-off-by: Sylwester Nawrocki Signed-off-by: Kyungmin Park Signed-off-by: Mauro Carvalho Chehab --- .../media/platform/s5p-fimc/fimc-mdevice.c | 39 +++++++++---------- 1 file changed, 19 insertions(+), 20 deletions(-) diff --git a/drivers/media/platform/s5p-fimc/fimc-mdevice.c b/drivers/media/platform/s5p-fimc/fimc-mdevice.c index a17fcb2d5d41..cd38d708ab58 100644 --- a/drivers/media/platform/s5p-fimc/fimc-mdevice.c +++ b/drivers/media/platform/s5p-fimc/fimc-mdevice.c @@ -827,7 +827,7 @@ static int fimc_md_link_notify(struct media_pad *source, struct fimc_pipeline *pipeline; struct v4l2_subdev *sd; struct mutex *lock; - int ret = 0; + int i, ret = 0; int ref_count; if (media_entity_type(sink->entity) != MEDIA_ENT_T_V4L2_SUBDEV) @@ -854,29 +854,28 @@ static int fimc_md_link_notify(struct media_pad *source, return 0; } + mutex_lock(lock); + ref_count = fimc ? fimc->vid_cap.refcnt : fimc_lite->ref_count; + if (!(flags & MEDIA_LNK_FL_ENABLED)) { - int i; - mutex_lock(lock); - ret = __fimc_pipeline_close(pipeline); + if (ref_count > 0) { + ret = __fimc_pipeline_close(pipeline); + if (!ret && fimc) + fimc_ctrls_delete(fimc->vid_cap.ctx); + } for (i = 0; i < IDX_MAX; i++) pipeline->subdevs[i] = NULL; - if (fimc) - fimc_ctrls_delete(fimc->vid_cap.ctx); - mutex_unlock(lock); - return ret; + } else if (ref_count > 0) { + /* + * Link activation. Enable power of pipeline elements only if + * the pipeline is already in use, i.e. its video node is open. + * Recreate the controls destroyed during the link deactivation. + */ + ret = __fimc_pipeline_open(pipeline, + source->entity, true); + if (!ret && fimc) + ret = fimc_capture_ctrls_create(fimc); } - /* - * Link activation. Enable power of pipeline elements only if the - * pipeline is already in use, i.e. its video node is opened. - * Recreate the controls destroyed during the link deactivation. - */ - mutex_lock(lock); - - ref_count = fimc ? fimc->vid_cap.refcnt : fimc_lite->ref_count; - if (ref_count > 0) - ret = __fimc_pipeline_open(pipeline, source->entity, true); - if (!ret && fimc) - ret = fimc_capture_ctrls_create(fimc); mutex_unlock(lock); return ret ? -EPIPE : ret; -- 2.39.2