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[media] v4l2: bfin: Ensure delete and reinit list entry on NOMMU architecture

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On NOMMU architecture page fault is not triggered if a deleted list entry is
accessed without reinit.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Acked-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Sonic Zhang 2014-07-23 06:57:15 -03:00 committed by Mauro Carvalho Chehab
parent f7d0e6d67f
commit 7ba3c21c17
1 changed files with 3 additions and 3 deletions
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6
drivers/media/platform/blackfin/bfin_capture.c
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@ -446,7 +446,7 @@ static void bcap_stop_streaming(struct vb2_queue *vq)
while (!list_empty(&bcap_dev->dma_queue)) { while (!list_empty(&bcap_dev->dma_queue)) {
bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next, bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next,
struct bcap_buffer, list); struct bcap_buffer, list);
list_del(&bcap_dev->cur_frm->list); list_del_init(&bcap_dev->cur_frm->list);
vb2_buffer_done(&bcap_dev->cur_frm->vb, VB2_BUF_STATE_ERROR); vb2_buffer_done(&bcap_dev->cur_frm->vb, VB2_BUF_STATE_ERROR);
} }
} }
@ -533,7 +533,7 @@ static irqreturn_t bcap_isr(int irq, void *dev_id)
} }
bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next, bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next,
struct bcap_buffer, list); struct bcap_buffer, list);
list_del(&bcap_dev->cur_frm->list); list_del_init(&bcap_dev->cur_frm->list);
} else { } else {
/* clear error flag, we will get a new frame */ /* clear error flag, we will get a new frame */
if (ppi->err) if (ppi->err)
@ -583,7 +583,7 @@ static int bcap_streamon(struct file *file, void *priv,
bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next, bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next,
struct bcap_buffer, list); struct bcap_buffer, list);
/* remove buffer from the dma queue */ /* remove buffer from the dma queue */
list_del(&bcap_dev->cur_frm->list); list_del_init(&bcap_dev->cur_frm->list);
addr = vb2_dma_contig_plane_dma_addr(&bcap_dev->cur_frm->vb, 0); addr = vb2_dma_contig_plane_dma_addr(&bcap_dev->cur_frm->vb, 0);
/* update DMA address */ /* update DMA address */
ppi->ops->update_addr(ppi, (unsigned long)addr); ppi->ops->update_addr(ppi, (unsigned long)addr);