[PATCH] media: stm32-dcmi: fix check of pm_runtime_get_sync return value

[Hugues Fruchet]

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.fruc...@st.com>
---
 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 6732874..f44d8a7 100644
--- a/drivers/media/platform/stm32/stm32-dcmi.c
+++ b/drivers/media/platform/stm32/stm32-dcmi.c
@@ -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;
        }
 
-- 
2.7.4