From: Hugues Fruchet hugues.fruchet@st.com
commit ab41b99e7e55c85f29ff7b54718ccbbe051905e7 upstream
Start streaming was sometimes failing because of pm_runtime_get_sync() non-0 return value. In fact return value was not an error but a positive value (1), indicating that PM was already enabled. Fix this by going to error path only with negative return value.
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 Cc: stable stable@vger.kernel.org # 4.19+ Signed-off-by: Mathieu Poirier mathieu.poirier@linaro.org --- drivers/media/platform/stm32/stm32-dcmi.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/media/platform/stm32/stm32-dcmi.c b/drivers/media/platform/stm32/stm32-dcmi.c index d86944109cbf..18d0b5641789 100644 --- a/drivers/media/platform/stm32/stm32-dcmi.c +++ b/drivers/media/platform/stm32/stm32-dcmi.c @@ -584,9 +584,9 @@ static int dcmi_start_streaming(struct vb2_queue *vq, unsigned int count) int ret;
ret = pm_runtime_get_sync(dcmi->dev); - if (ret) { - dev_err(dcmi->dev, "%s: Failed to start streaming, cannot get sync\n", - __func__); + if (ret < 0) { + dev_err(dcmi->dev, "%s: Failed to start streaming, cannot get sync (%d)\n", + __func__, ret); goto err_release_buffers; }