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drm/amd/display: Check dce_hwseq before dereferencing it

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[WHAT]

hws was checked for null earlier in dce110_blank_stream, indicating hws
can be null, and should be checked whenever it is used.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 79db43611f)
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Hung
2025-06-03 18:30:55 -06:00
committed by Alex Deucher
parent 46e15197b5
commit b669507b63
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c
+1 -1
View File
@@ -1225,7 +1225,7 @@ void dce110_blank_stream(struct pipe_ctx *pipe_ctx)
return;
if (link->local_sink && link->local_sink->sink_signal == SIGNAL_TYPE_EDP) {
if (!link->skip_implict_edp_power_control)
if (!link->skip_implict_edp_power_control && hws)
hws->funcs.edp_backlight_control(link, false);
link->dc->hwss.set_abm_immediate_disable(pipe_ctx);
}