There is kernel crashed happen due to unable to handle kernel NULL
pointer dereference of dp_panel->connector while running DP link
layer compliance test case 4.2.2.6 (EDIDCorruption Detection).
This patch will fixed the problem by populating connector of dp_panel.
Fixes: 7948fe12d47 ("drm/msm/dp: return correct edid checksum after corrupted edid checksum read")
Signed-off-by: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx>
---
drivers/gpu/drm/msm/dp/dp_panel.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/msm/dp/dp_panel.c b/drivers/gpu/drm/msm/dp/dp_panel.c
index 71db10c..6a938a2 100644
--- a/drivers/gpu/drm/msm/dp/dp_panel.c
+++ b/drivers/gpu/drm/msm/dp/dp_panel.c
@@ -197,6 +197,8 @@ int dp_panel_read_sink_caps(struct dp_panel *dp_panel,
kfree(dp_panel->edid);
dp_panel->edid = NULL;
+ dp_panel->connector = connector;
+
dp_panel->edid = drm_get_edid(connector,
&panel->aux->ddc);
if (!dp_panel->edid) {
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
