From: Bhawanpreet Lakha Date: Mon, 25 Nov 2019 15:34:13 +0000 (-0500) Subject: drm/amd/display: Null check aconnector in event_property_validate X-Git-Tag: v5.6-rc1~114^2~21^2~141 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=79c4ac0d759b6baaca22d7f37f6594a677030976;p=linux.git drm/amd/display: Null check aconnector in event_property_validate [Why] previously event_property_validate was only called after we enabled the display. But after "Refactor HDCP to handle multiple displays per link" this function can be called at any time. In certain cases we don't have a aconnector [How] Null check aconnector and exit early. This is ok because we only need to check the ENABLED->DESIRED transition if a connector exists. Fixes: b1abe5586ffc ("drm/amd/display: Refactor HDCP to handle multiple displays per link") Signed-off-by: Bhawanpreet Lakha Reviewed-by: Zhan Liu Reviewed-by: Nicholas Kazlauskas Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c index f6864a51891a..ae329335dfcc 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_hdcp.c @@ -225,6 +225,9 @@ static void event_property_validate(struct work_struct *work) struct mod_hdcp_display_query query; struct amdgpu_dm_connector *aconnector = hdcp_work->aconnector; + if (!aconnector) + return; + mutex_lock(&hdcp_work->mutex); query.encryption_status = MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF;