6.12-stable review patch. If anyone has any objections, please let me know.
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From: Alex Hung alex.hung@amd.com
commit b669507b637eb6b1aaecf347f193efccc65d756e upstream.
[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 79db43611ff61280b6de58ce1305e0b2ecf675ad) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c +++ b/drivers/gpu/drm/amd/display/dc/hwss/dce110/dce110_hwseq.c @@ -1217,7 +1217,7 @@ void dce110_blank_stream(struct pipe_ctx struct dce_hwseq *hws = link->dc->hwseq;
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); }