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| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2009-08-06 01:06:31 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-08-14 01:39:11 +0200 |
| commit | 2dd54a54c19d0e5b50f4e1c591653772ead9d4a1 (patch) | |
| tree | 3ab873ae09a4cc3f56906dbb4712e1331a078519 /drivers/media/video/mx1_camera.c | |
| parent | V4L/DVB (12422): media/zr364xx: fix build errors (diff) | |
| download | linux-2dd54a54c19d0e5b50f4e1c591653772ead9d4a1.tar.xz linux-2dd54a54c19d0e5b50f4e1c591653772ead9d4a1.zip | |
V4L/DVB (12424): soc-camera: fix recursive locking in .buf_queue()
The .buf_queue() V4L2 driver method is called under
spinlock_irqsave(q->irqlock,...), don't take the lock again inside the
function.
Reported-by: Antonio Ospite <ospite@studenti.unina.it>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/mx1_camera.c')
| -rw-r--r-- | drivers/media/video/mx1_camera.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/media/video/mx1_camera.c b/drivers/media/video/mx1_camera.c index 2d075205bdfe..736c31d23194 100644 --- a/drivers/media/video/mx1_camera.c +++ b/drivers/media/video/mx1_camera.c @@ -234,6 +234,7 @@ static int mx1_camera_setup_dma(struct mx1_camera_dev *pcdev) return ret; } +/* Called under spinlock_irqsave(&pcdev->lock, ...) */ static void mx1_videobuf_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb) { @@ -241,13 +242,10 @@ static void mx1_videobuf_queue(struct videobuf_queue *vq, struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); struct mx1_camera_dev *pcdev = ici->priv; struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb); - unsigned long flags; dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, vb, vb->baddr, vb->bsize); - spin_lock_irqsave(&pcdev->lock, flags); - list_add_tail(&vb->queue, &pcdev->capture); vb->state = VIDEOBUF_ACTIVE; @@ -264,8 +262,6 @@ static void mx1_videobuf_queue(struct videobuf_queue *vq, __raw_writel(temp, pcdev->base + CSICR1); } } - - spin_unlock_irqrestore(&pcdev->lock, flags); } static void mx1_videobuf_release(struct videobuf_queue *vq, |