diff options
author | Mikita Lipski <mikita.lipski@amd.com> | 2021-11-15 16:07:38 -0500 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2021-12-07 13:10:30 -0500 |
commit | a1f5e392de78f122629412d6e4350d1c887f1711 (patch) | |
tree | 532514e14eea4faecb46ae8ea55eae93be8d8b0a /drivers | |
parent | e885d64785aa56e10e432c3319e3b5b0a2d30ac2 (diff) | |
download | linux-a1f5e392de78f122629412d6e4350d1c887f1711.tar.bz2 |
drm/amd/display: prevent reading unitialized links
[why/how]
The function can be called on boot or after suspend when
links are not initialized, to prevent it guard it with
NULL pointer check
Reviewed-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Acked-by: Pavle Kotarac <Pavle.Kotarac@amd.com>
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc_link.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc_link.h b/drivers/gpu/drm/amd/display/dc/dc_link.h index 3d4f5bf049c3..4ebba641538b 100644 --- a/drivers/gpu/drm/amd/display/dc/dc_link.h +++ b/drivers/gpu/drm/amd/display/dc/dc_link.h @@ -231,6 +231,8 @@ static inline void get_edp_links(const struct dc *dc, *edp_num = 0; for (i = 0; i < dc->link_count; i++) { // report any eDP links, even unconnected DDI's + if (!dc->links[i]) + continue; if (dc->links[i]->connector_signal == SIGNAL_TYPE_EDP) { edp_links[*edp_num] = dc->links[i]; if (++(*edp_num) == MAX_NUM_EDP) |