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drm/amd/display: Add pointer check before function call

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Call to immediate_disable_crtc was not checked before calling, exposing
a potential null pointer hang.

Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Sung Joon Kim <sungkim@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Sung Joon Kim 2023-08-09 16:39:53 -04:00 committed by Alex Deucher
parent 4b4f585369
commit d444433055
1 changed files with 3 additions and 1 deletions
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4
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn35/dcn35_clk_mgr.c
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@ -128,7 +128,9 @@ static void dcn35_disable_otg_wa(struct clk_mgr *clk_mgr_base, struct dc_state *
if (stream_enc && stream_enc->funcs->disable_fifo)
pipe->stream_res.stream_enc->funcs->disable_fifo(stream_enc);
pipe->stream_res.tg->funcs->immediate_disable_crtc(pipe->stream_res.tg);
if (pipe->stream_res.tg && pipe->stream_res.tg->funcs->immediate_disable_crtc)
pipe->stream_res.tg->funcs->immediate_disable_crtc(pipe->stream_res.tg);
reset_sync_context_for_pipe(dc, context, i);
} else {
pipe->stream_res.tg->funcs->enable_crtc(pipe->stream_res.tg);