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[2/2] drm: adv7511: Fix out-of-bounds array in clock_div_by_lanes

Message ID 20241105110236.112631-3-biju.das.jz@bp.renesas.com (mailing list archive)
State New
Headers show
Series drm: adv7511: ADV7535 fixes | expand

Commit Message

Biju Das Nov. 5, 2024, 11:02 a.m. UTC
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@renesas.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
 drivers/gpu/drm/bridge/adv7511/adv7533.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

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;