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authorJake Wang <haonan.wang2@amd.com>2020-06-05 16:16:38 -0400
committerAlex Deucher <alexander.deucher@amd.com>2020-07-01 01:59:25 -0400
commit3e1974cf02481c464703a33881e20c9711053979 (patch)
tree3b7a716ecaefb5b412157623c3345508af2193c0 /drivers/gpu/drm/amd/display
parent8c44515be175a1bc18620284d23efa385daea49f (diff)
drm/amd/display: Added local_sink null check before access
[Why & How] Need to check if local_sink is NULL before accessing. Signed-off-by: Jake Wang <haonan.wang2@amd.com> Reviewed-by: Anthony Koo <Anthony.Koo@amd.com> Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display')
-rw-r--r--drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
index 6590f51caefa..93e28231a9d0 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_hwss.c
@@ -167,7 +167,8 @@ bool edp_receiver_ready_T9(struct dc_link *link)
} while (++tries < 50);
}
- if (link->local_sink->edid_caps.panel_patch.extra_delay_backlight_off > 0)
+ if (link->local_sink &&
+ link->local_sink->edid_caps.panel_patch.extra_delay_backlight_off > 0)
udelay(link->local_sink->edid_caps.panel_patch.extra_delay_backlight_off * 1000);
return result;
@@ -201,7 +202,8 @@ bool edp_receiver_ready_T7(struct dc_link *link)
} while (time_taken_in_ns < 50 * 1000000); //MAx T7 is 50ms
}
- if (link->local_sink->edid_caps.panel_patch.extra_t7_ms > 0)
+ if (link->local_sink &&
+ link->local_sink->edid_caps.panel_patch.extra_t7_ms > 0)
udelay(link->local_sink->edid_caps.panel_patch.extra_t7_ms * 1000);
return result;