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drm/radeon: be quiet when no SAD block is found 

It is fine for displays without audio functionality to not provide
any SAD block in their EDID. Do not log an error in that case,
just return quietly.

Inspired by a similar fix to the amdgpu driver in the context of bug
fdo#107825:
https://bugs.freedesktop.org/show_bug.cgi?id=107825

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: "David (ChunMing) Zhou" <David1.Zhou@amd.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Jean Delvare 2019-09-04 11:13:37 +02:00 committed by Alex Deucher
parent ae2a349597
commit 72496eb117
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/radeon/radeon_audio.c
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@ -367,10 +367,10 @@ static void radeon_audio_write_sad_regs(struct drm_encoder *encoder)
return;
sad_count = drm_edid_to_sad(radeon_connector_edid(connector), &sads);
if (sad_count <= 0) {
if (sad_count < 0)
DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
if (sad_count <= 0)
return;
}
BUG_ON(!sads);
if (radeon_encoder->audio && radeon_encoder->audio->write_sad_regs)