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path: root/drivers/media/video/mx3_camera.c
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Diffstat (limited to 'drivers/media/video/mx3_camera.c')
-rw-r--r--drivers/media/video/mx3_camera.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/media/video/mx3_camera.c b/drivers/media/video/mx3_camera.c
index e605c07..9770cb7 100644
--- a/drivers/media/video/mx3_camera.c
+++ b/drivers/media/video/mx3_camera.c
@@ -332,7 +332,10 @@ static enum pixel_fmt fourcc_to_ipu_pix(__u32 fourcc)
}
}
-/* Called with .vb_lock held */
+/*
+ * Called with .vb_lock mutex held and
+ * under spinlock_irqsave(&mx3_cam->lock, ...)
+ */
static void mx3_videobuf_queue(struct videobuf_queue *vq,
struct videobuf_buffer *vb)
{
@@ -346,7 +349,8 @@ static void mx3_videobuf_queue(struct videobuf_queue *vq,
struct idmac_video_param *video = &ichan->params.video;
const struct soc_camera_data_format *data_fmt = icd->current_fmt;
dma_cookie_t cookie;
- unsigned long flags;
+
+ BUG_ON(!irqs_disabled());
/* This is the configuration of one sg-element */
video->out_pixel_fmt = fourcc_to_ipu_pix(data_fmt->fourcc);
@@ -359,8 +363,6 @@ static void mx3_videobuf_queue(struct videobuf_queue *vq,
memset((void *)vb->baddr, 0xaa, vb->bsize);
#endif
- spin_lock_irqsave(&mx3_cam->lock, flags);
-
list_add_tail(&vb->queue, &mx3_cam->capture);
if (!mx3_cam->active) {
@@ -370,24 +372,23 @@ static void mx3_videobuf_queue(struct videobuf_queue *vq,
vb->state = VIDEOBUF_QUEUED;
}
- spin_unlock_irqrestore(&mx3_cam->lock, flags);
+ spin_unlock_irq(&mx3_cam->lock);
cookie = txd->tx_submit(txd);
dev_dbg(&icd->dev, "Submitted cookie %d DMA 0x%08x\n", cookie, sg_dma_address(&buf->sg));
+
+ spin_lock_irq(&mx3_cam->lock);
+
if (cookie >= 0)
return;
/* Submit error */
vb->state = VIDEOBUF_PREPARED;
- spin_lock_irqsave(&mx3_cam->lock, flags);
-
list_del_init(&vb->queue);
if (mx3_cam->active == buf)
mx3_cam->active = NULL;
-
- spin_unlock_irqrestore(&mx3_cam->lock, flags);
}
/* Called with .vb_lock held */