[PATCH 1/4] media: stm32-dcmi: do not fall into error on buffer starvation

[hugues.fruchet@st.com (Hugues Fruchet)]

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>
---
 drivers/media/platform/stm32/stm32-dcmi.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c
index b796334..a3fbfac 100644
--- a/drivers/media/platform/stm32/stm32-dcmi.c
+++ b/drivers/media/platform/stm32/stm32-dcmi.c
@@ -228,13 +228,10 @@ 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,
-- 
1.9.1