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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: Hugues Fruchet <hugues.fruchet@st.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Hugues Fruchet 2019-04-01 04:55:00 -04:00 committed by Mauro Carvalho Chehab
parent d8986600dc
commit 1be0a2b702
1 changed files with 8 additions and 4 deletions
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12
drivers/media/platform/stm32/stm32-dcmi.c
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@ -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)
dcmi->overrun_count++;
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) {