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drm/amd/display: check for null before calling is_blanked 

Signed-off-by: Yue Hin Lau <Yuehin.Lau@amd.com>
Reviewed-by: Eric Bernstein <Eric.Bernstein@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yue Hin Lau 2017-12-12 14:34:30 -05:00 committed by Alex Deucher
parent b5f96fe1ed
commit 4ebf848311
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/display/dc/core/dc.c
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@ -580,7 +580,7 @@ static void program_timing_sync(
for (j = 0; j < group_size; j++) {
struct pipe_ctx *temp;
if (!pipe_set[j]->stream_res.tg->funcs->is_blanked(pipe_set[j]->stream_res.tg)) {
if (pipe_set[j]->stream_res.tg->funcs->is_blanked && !pipe_set[j]->stream_res.tg->funcs->is_blanked(pipe_set[j]->stream_res.tg)) {
if (j == 0)
break;
@ -593,7 +593,7 @@ static void program_timing_sync(
/* remove any other unblanked pipes as they have already been synced */
for (j = j + 1; j < group_size; j++) {
if (!pipe_set[j]->stream_res.tg->funcs->is_blanked(pipe_set[j]->stream_res.tg)) {
if (pipe_set[j]->stream_res.tg->funcs->is_blanked && !pipe_set[j]->stream_res.tg->funcs->is_blanked(pipe_set[j]->stream_res.tg)) {
group_size--;
pipe_set[j] = pipe_set[group_size];
j--;