diff mbox series

[v2,11/13] drm/edid: make drm_edid_duplicate() safe to call with NULL parameter

Message ID 1ae8923d39a5abd0260fdf7f9cc54c5e046e70d3.1685437501.git.jani.nikula@intel.com (mailing list archive)
State New, archived
Headers show
Series drm/display & drm/i915: more struct drm_edid conversions | expand

Commit Message

Jani Nikula May 30, 2023, 9:08 a.m. UTC 
It's a bit tedious to check for NULL before calling
drm_edid_duplicate(). Make it handle NULL parameter graciously.

Reviewed-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
---
 drivers/gpu/drm/drm_edid.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 941f3d53a701..e0dbd9140726 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -2881,6 +2881,9 @@  EXPORT_SYMBOL(drm_edid_read_switcheroo);
  */
 struct edid *drm_edid_duplicate(const struct edid *edid)
 {
+	if (!edid)
+		return NULL;
+
 	return kmemdup(edid, edid_size(edid), GFP_KERNEL);
 }
 EXPORT_SYMBOL(drm_edid_duplicate);