Instead of exiting the loop as expected when an entry is found, the
list_for_each_entry() continues until the traversal is complete. It
will certainly lead to a invalid reference to list itereator variable
'connector' after the loop pointing an bogus address at an offset
from the list head, and could lead to multiple 'is_*' flags being set
with true mistakely too.
The invalid reference to list itereator is here:
drm_object_property_get_value(&connector->base,
To fix this, when found the entry, add a break after the switch
statement.
Fixes: a69ac9ea85d87 ("drm/gma500: drm_connector_property -> drm_object_property")
Signed-off-by: Xiaomeng Tong <xiam0nd.tong@xxxxxxxxx>
---
drivers/gpu/drm/gma500/oaktrail_crtc.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/gma500/oaktrail_crtc.c b/drivers/gpu/drm/gma500/oaktrail_crtc.c
index 36c7c2686c90..eb2d79872bd5 100644
--- a/drivers/gpu/drm/gma500/oaktrail_crtc.c
+++ b/drivers/gpu/drm/gma500/oaktrail_crtc.c
@@ -409,6 +409,8 @@ static int oaktrail_crtc_mode_set(struct drm_crtc *crtc,
is_mipi = true;
break;
}
+
+ break;
}
/* Disable the VGA plane that we never use */
--
2.17.1
