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[media] v4l2: bfin: Ensure delete and reinit list entry on NOMMU architecture
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>
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@ -446,7 +446,7 @@ static void bcap_stop_streaming(struct vb2_queue *vq)
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while (!list_empty(&bcap_dev->dma_queue)) {
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bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next,
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struct bcap_buffer, list);
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list_del(&bcap_dev->cur_frm->list);
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list_del_init(&bcap_dev->cur_frm->list);
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vb2_buffer_done(&bcap_dev->cur_frm->vb, VB2_BUF_STATE_ERROR);
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}
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}
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@ -533,7 +533,7 @@ static irqreturn_t bcap_isr(int irq, void *dev_id)
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}
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bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next,
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struct bcap_buffer, list);
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list_del(&bcap_dev->cur_frm->list);
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list_del_init(&bcap_dev->cur_frm->list);
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} else {
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/* clear error flag, we will get a new frame */
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if (ppi->err)
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@ -583,7 +583,7 @@ static int bcap_streamon(struct file *file, void *priv,
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bcap_dev->cur_frm = list_entry(bcap_dev->dma_queue.next,
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struct bcap_buffer, list);
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/* remove buffer from the dma queue */
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list_del(&bcap_dev->cur_frm->list);
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list_del_init(&bcap_dev->cur_frm->list);
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addr = vb2_dma_contig_plane_dma_addr(&bcap_dev->cur_frm->vb, 0);
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/* update DMA address */
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ppi->ops->update_addr(ppi, (unsigned long)addr);
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