Fix out-of-bounds array in adv7511_dsi_config_timing_gen() for
clock_div_by_lanes[], when dsi lanes = 1.
Fixes: 78fa479d703c ("drm/bridge: adv7533: Use internal timing generator")
Reported-by: Hien Huynh <hien.huynh.px@xxxxxxxxxxx>
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
drivers/gpu/drm/bridge/adv7511/adv7533.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7533.c b/drivers/gpu/drm/bridge/adv7511/adv7533.c
index 3e57ba838e5e..0c2236e53af5 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7533.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7533.c
@@ -185,6 +185,9 @@ int adv7533_parse_dt(struct device_node *np, struct adv7511 *adv)
adv->use_timing_gen = !of_property_read_bool(np,
"adi,disable-timing-generator");
+ if (adv->use_timing_gen && num_lanes == 1)
+ return -EINVAL;
+
/* TODO: Check if these need to be parsed by DT or not */
adv->rgb = true;
adv->embedded_sync = false;
--
2.43.0
