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drm/amd/display: Add null pointer check to is_dig_enabled func

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[WHY]
Safeguarding as pointer may be null in diagnostic environment

Signed-off-by: Michael Strauss <michael.strauss@amd.com>
Reviewed-by: Sung Lee <Sung.Lee@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michael Strauss 2021-01-13 16:33:15 -05:00 committed by Alex Deucher
parent 91501d0aff
commit 7e60e38905
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/clk_mgr/dcn301/vg_clk_mgr.c
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@ -75,7 +75,8 @@ int vg_get_active_display_cnt_wa(
const struct dc_link *link = dc->links[i];
/* abusing the fact that the dig and phy are coupled to see if the phy is enabled */
if (link->link_enc->funcs->is_dig_enabled(link->link_enc))
if (link->link_enc->funcs->is_dig_enabled &&
link->link_enc->funcs->is_dig_enabled(link->link_enc))
display_count++;
}