On 11/3/21 8:48 AM, Jiasheng Jiang wrote:
As we see in the drm_connector_list_iter_next(), it could return
NULL. In order to avoid the use of the NULL pointer, it may be
better to check the return value.
Fixes: c42001e ("drm: mxsfb: Use drm_panel_bridge")
Signed-off-by: Jiasheng Jiang <jiasheng@xxxxxxxxxxx>
---
drivers/gpu/drm/mxsfb/mxsfb_drv.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 6da9355..b875c11 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -145,6 +145,8 @@ static int mxsfb_attach_bridge(struct mxsfb_drm_private *mxsfb)
*/
drm_connector_list_iter_begin(drm, &iter);
mxsfb->connector = drm_connector_list_iter_next(&iter);
+ if (!mxsfb->connector)
+ return 1;
In which case does this happen failure happen ?
What is the test case ?
