From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Let's make cea_db_offsets() a bit more convenient to use by
setting the start/end offsets to zero whenever the data block
collection isn't present. This makes it safe for the caller
to blindly iterate the data blocks even if there are none.
Cc: Jean Delvare <jdelvare@xxxxxxx>
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_edid.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 7b3072fc550b..e5905dc764c1 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -3690,6 +3690,9 @@ cea_revision(const u8 *cea)
static int
cea_db_offsets(const u8 *cea, int *start, int *end)
{
+ *start = 0;
+ *end = 0;
+
if (cea_revision(cea) < 3)
return -ENOTSUPP;
@@ -4116,10 +4119,7 @@ static void drm_edid_to_eld(struct drm_connector *connector, struct edid *edid)
if (cea_revision(cea) >= 3) {
int i, start, end;
- if (cea_db_offsets(cea, &start, &end)) {
- start = 0;
- end = 0;
- }
+ cea_db_offsets(cea, &start, &end);
for_each_cea_db(cea, i, start, end) {
db = &cea[i];
--
2.21.0
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