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[media] V4L: sh_mobile_ceu_camera: implement .stop_streaming()

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The .stop_streaming() videobuf2 operation has to be implemented to
guarantee, that video buffers are not written to after a STREAMOFF.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Guennadi Liakhovetski 2011-03-24 12:51:07 -03:00 committed by Mauro Carvalho Chehab
parent c68956c14b
commit 066f786720
1 changed files with 21 additions and 0 deletions
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21
drivers/media/video/sh_mobile_ceu_camera.c
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@ -427,6 +427,26 @@ static int sh_mobile_ceu_videobuf_init(struct vb2_buffer *vb)
return 0;
}
static int sh_mobile_ceu_stop_streaming(struct vb2_queue *q)
{
struct soc_camera_device *icd = container_of(q, struct soc_camera_device, vb2_vidq);
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
struct list_head *buf_head, *tmp;
unsigned long flags;
spin_lock_irqsave(&pcdev->lock, flags);
pcdev->active = NULL;
list_for_each_safe(buf_head, tmp, &pcdev->capture)
list_del_init(buf_head);
spin_unlock_irqrestore(&pcdev->lock, flags);
return sh_mobile_ceu_soft_reset(pcdev);
}
static struct vb2_ops sh_mobile_ceu_videobuf_ops = {
.queue_setup = sh_mobile_ceu_videobuf_setup,
.buf_prepare = sh_mobile_ceu_videobuf_prepare,
@ -435,6 +455,7 @@ static struct vb2_ops sh_mobile_ceu_videobuf_ops = {
.buf_init = sh_mobile_ceu_videobuf_init,
.wait_prepare = soc_camera_unlock,
.wait_finish = soc_camera_lock,
.stop_streaming = sh_mobile_ceu_stop_streaming,
};
static irqreturn_t sh_mobile_ceu_irq(int irq, void *data)