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drm/radeon/hdmi: make sure we have an afmt block assigned

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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
This commit is contained in:
Alex Deucher 2013-07-08 18:16:56 -04:00
parent 774d8e34e4
commit c2b4cacfe9
2 changed files with 12 additions and 0 deletions
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6
drivers/gpu/drm/radeon/evergreen_hdmi.c
View file

@ -177,6 +177,9 @@ void evergreen_hdmi_setmode(struct drm_encoder *encoder, struct drm_display_mode
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;
@ -280,6 +283,9 @@ void evergreen_hdmi_enable(struct drm_encoder *encoder, bool enable)
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
struct radeon_encoder_atom_dig *dig = radeon_encoder->enc_priv;
if (!dig || !dig->afmt)
return;
/* Silent, r600_hdmi_enable will raise WARN for us */
if (enable && dig->afmt->enabled)
return;

6
drivers/gpu/drm/radeon/r600_hdmi.c
View file

@ -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;