From b53a24fc2849a4d56961ac74a7aaeca9f5953a5a Mon Sep 17 00:00:00 2001 From: Hugues Fruchet Date: Mon, 11 Jun 2018 05:50:24 -0400 Subject: [PATCH] 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 Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- 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 b78583d..fc72a57 100644 --- a/drivers/media/platform/stm32/stm32-dcmi.c +++ b/drivers/media/platform/stm32/stm32-dcmi.c @@ -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, -- 2.7.4