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authorAlex Deucher <alexander.deucher@amd.com>2013-07-08 18:16:56 -0400
committerAlex Deucher <alexander.deucher@amd.com>2013-07-14 10:10:53 -0400
commitc2b4cacfe9816c1fe378c785ce8a678cf0635ec6 (patch)
tree5231af1e1499a7b201b6a0526ffc1893edf01609 /drivers/gpu/drm/radeon/r600_hdmi.c
parent774d8e34e46506222bb5e2888e3ef42b2775715f (diff)
downloadlinux-c2b4cacfe9816c1fe378c785ce8a678cf0635ec6.tar.bz2
drm/radeon/hdmi: make sure we have an afmt block assigned
Prevents a segfault if an afmt block is not assigned to the encoder such as in the LVDS or eDP case. Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=66714 Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu/drm/radeon/r600_hdmi.c')
-rw-r--r--drivers/gpu/drm/radeon/r600_hdmi.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r600_hdmi.c b/drivers/gpu/drm/radeon/r600_hdmi.c
index e73b2a73494a..f48240bb8c56 100644
--- a/drivers/gpu/drm/radeon/r600_hdmi.c
+++ b/drivers/gpu/drm/radeon/r600_hdmi.c
@@ -266,6 +266,9 @@ void r600_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode *mod
uint32_t offset;
ssize_t err;
+ if (!dig || !dig->afmt)
+ return;
+
/* Silent, r600_hdmi_enable will raise WARN for us */
if (!dig->afmt->enabled)
return;
@@ -448,6 +451,9 @@ void r600_hdmi_enable(struct drm_encoder *encoder, bool enable)
struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
u32 hdmi = HDMI0_ERROR_ACK;
+ if (!dig || !dig->afmt)
+ return;
+
/* Silent, r600_hdmi_enable will raise WARN for us */
if (enable && dig->afmt->enabled)
return;