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media: stm32-dcmi: do not fall into error on buffer starvation 

Return silently instead of falling into error when running
out of available buffers when restarting capture.
Capture will be restarted when new buffers will be
provided by V4L2 client.

Signed-off-by: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Hugues Fruchet 2018-06-11 05:50:24 -04:00 committed by Mauro Carvalho Chehab
parent 4b84e75020
commit b53a24fc28
1 changed files with 2 additions and 5 deletions
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7
drivers/media/platform/stm32/stm32-dcmi.c
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@ -227,13 +227,10 @@ static int dcmi_restart_capture(struct stm32_dcmi *dcmi)
/* Restart a new DMA transfer with next buffer */
if (list_empty(&dcmi->buffers)) {
dev_err(dcmi->dev, "%s: No more buffer queued, cannot capture buffer\n",
__func__);
dcmi->errors_count++;
dev_dbg(dcmi->dev, "Capture restart is deferred to next buffer queueing\n");
dcmi->active = NULL;
spin_unlock_irq(&dcmi->irqlock);
return -EINVAL;
return 0;
}
dcmi->active = list_entry(dcmi->buffers.next,