Commit 1be0a2b7 authored by Hugues Fruchet's avatar Hugues Fruchet Committed by Mauro Carvalho Chehab
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media: stm32-dcmi: do not emit error trace in case of few overrun 



Report overrun error only when it exceeds a given threshold.

Signed-off-by: default avatarHugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent d8986600

drivers/media/platform/stm32/stm32-dcmi.c

+8 −4
Original line number Diff line number Diff line
@@ -97,6 +97,8 @@ enum state { 


#define TIMEOUT_MS	1000



#define OVERRUN_ERROR_THRESHOLD	3



struct dcmi_graph_entity {

	struct device_node *node;
@@ -446,11 +448,13 @@ static irqreturn_t dcmi_irq_thread(int irq, void *arg) 


	spin_lock_irq(&dcmi->irqlock);



	if ((dcmi->misr & IT_OVR) || (dcmi->misr & IT_ERR)) {

		dcmi->errors_count++;

		if (dcmi->misr & IT_OVR)

	if (dcmi->misr & IT_OVR) {

		dcmi->overrun_count++;

		if (dcmi->overrun_count > OVERRUN_ERROR_THRESHOLD)

			dcmi->errors_count++;

	}

	if (dcmi->misr & IT_ERR)

		dcmi->errors_count++;



	if (dcmi->sd_format->fourcc == V4L2_PIX_FMT_JPEG &&

	    dcmi->misr & IT_FRAME) {