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drm/amd/display: Null check clock source.

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Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yongqiang Sun 2017-01-11 15:52:06 -05:00 committed by Alex Deucher
parent ab2541b673
commit 457b74cb37
1 changed files with 2 additions and 1 deletions
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drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
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@ -74,7 +74,8 @@ void dp_enable_link_phy(
if (pipes[i].stream != NULL &&
pipes[i].stream->sink != NULL &&
pipes[i].stream->sink->link == link) {
if (pipes[i].clock_source->id != CLOCK_SOURCE_ID_DP_DTO) {
if (pipes[i].clock_source != NULL &&
pipes[i].clock_source->id != CLOCK_SOURCE_ID_DP_DTO) {
pipes[i].clock_source = dp_cs;
pipes[i].pix_clk_params.requested_pix_clk =
pipes[i].stream->public.timing.pix_clk_khz;