Commit fbfd3bc7 authored by Alex Deucher's avatar Alex Deucher
Browse files

drm/radeon/audio: make sure connector is valid in hotplug case 

Avoids a crash when a monitor is hotplugged and the encoder
and connector are not linked yet.

bug:
https://bugs.freedesktop.org/show_bug.cgi?id=90681



Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 2d1c18bb

drivers/gpu/drm/radeon/evergreen_hdmi.c

+3 −2
Original line number Diff line number Diff line
@@ -400,7 +400,7 @@ void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable) 
	if (enable) {

		struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);



		if (drm_detect_monitor_audio(radeon_connector_edid(connector))) {

		if (connector && drm_detect_monitor_audio(radeon_connector_edid(connector))) {

			WREG32(HDMI_INFOFRAME_CONTROL0 + dig->afmt->offset,

			       HDMI_AVI_INFO_SEND | /* enable AVI info frames */

			       HDMI_AVI_INFO_CONT | /* required for audio info values to be updated */
@@ -438,7 +438,8 @@ void evergreen_dp_enable(struct drm_encoder *encoder, bool enable) 
	if (!dig || !dig->afmt)

		return;



	if (enable && drm_detect_monitor_audio(radeon_connector_edid(connector))) {

	if (enable && connector &&

	    drm_detect_monitor_audio(radeon_connector_edid(connector))) {

		struct drm_connector *connector = radeon_get_connector_for_encoder(encoder);

		struct radeon_connector *radeon_connector = to_radeon_connector(connector);

		struct radeon_connector_atom_dig *dig_connector;

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