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media: stm32-dcmi: fix check of pm_runtime_get_sync return value

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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>
This commit is contained in:
Hugues Fruchet 2019-02-28 12:09:17 -05:00 committed by Mauro Carvalho Chehab
parent 2c2a8dc32c
commit ab41b99e7e
1 changed files with 3 additions and 3 deletions
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6
drivers/media/platform/stm32/stm32-dcmi.c
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@ -570,9 +570,9 @@ 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;
}