From 09fc9802c31a9358a4e34642aa5f569111752879 Mon Sep 17 00:00:00 2001 From: Simon Farnsworth Date: Mon, 5 Sep 2011 12:23:12 -0300 Subject: [media] cx18: Fix videobuf capture When we moved to 3.0, we found that the cx18 driver was oopsing on close with: NULL pointer deref at: [ 2290.461009] Call Trace: [ 2290.461009] [] ? pm_qos_add_request+0xc/0x6e [ 2290.461009] [] __mutex_lock_common+0x87/0x125 [ 2290.461009] [] ? cx18_queue_flush+0x31/0x87 [cx18] [ 2290.461009] [] ? __might_sleep+0x29/0xe4 [ 2290.461009] [] __mutex_lock_slowpath+0x25/0x27 [ 2290.461009] [] ? mutex_lock+0x2e/0x3b [ 2290.461009] [] mutex_lock+0x2e/0x3b [ 2290.461009] [] videobuf_queue_lock+0x13/0x15 [videobuf_core] [ 2290.461009] [] __videobuf_free+0xfc/0x112 [videobuf_core] [ 2290.461009] [] cx18_v4l2_close+0x158/0x172 [cx18] [ 2290.461009] [] ? cpumask_next+0x1a/0x1d [ 2290.461009] [] v4l2_release+0x35/0x52 [videodev] [ 2290.461009] [] fput+0x100/0x1a5 [ 2290.461009] [] filp_close+0x5c/0x64 [ 2290.461009] [] sys_close+0x5f/0x93 [ 2290.461009] [] sysenter_do_call+0x12/0x28 Some digging showed that a merge at some previous point partially added broken mmap() support, causing this trace. Remove the broken code completely. On top of that, the calculation in place for "buffer full" depended on UYUV instead of HM12, while our GStreamer code was picking HM12 in some circumstances. Finally, the V4L2_CAP_STREAMING capability was never exposed. Patch it into the YUV encoder node only. Signed-off-by: Simon Farnsworth Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/cx18/cx18-driver.h | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) (limited to 'drivers/media/video/cx18/cx18-driver.h') diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h index 183420723060..b9a94fc5146d 100644 --- a/drivers/media/video/cx18/cx18-driver.h +++ b/drivers/media/video/cx18/cx18-driver.h @@ -409,6 +409,7 @@ struct cx18_stream { /* Videobuf for YUV video */ u32 pixelformat; + u32 vb_bytes_per_frame; struct list_head vb_capture; /* video capture queue */ spinlock_t vb_lock; struct timer_list vb_timeout; @@ -430,10 +431,6 @@ struct cx18_open_id { u32 open_id; int type; struct cx18 *cx; - - struct videobuf_queue vbuf_q; - spinlock_t s_lock; /* Protect vbuf_q */ - enum v4l2_buf_type vb_type; }; static inline struct cx18_open_id *fh2id(struct v4l2_fh *fh) -- cgit v1.2.1