diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-05-27 11:33:26 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-05-27 13:14:59 -0400 |
| commit | fbfd3bc7dfd7efcad2d2e52bf634f84c80a77a35 (patch) | |
| tree | 06fc9dc9ad1b2848b39ca2896a9f37ed8a7fb0af | |
| parent | 2d1c18bba15daf89d75ce475ecd2068f483aa12f (diff) | |
| download | linux-fbfd3bc7dfd7efcad2d2e52bf634f84c80a77a35.tar.bz2 | |
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: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
| -rw-r--r-- | drivers/gpu/drm/radeon/evergreen_hdmi.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/radeon/evergreen_hdmi.c b/drivers/gpu/drm/radeon/evergreen_hdmi.c index 0926739c9fa7..9953356fe263 100644 --- a/drivers/gpu/drm/radeon/evergreen_hdmi.c +++ b/drivers/gpu/drm/radeon/evergreen_hdmi.c @@ -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; |