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

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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
View file

@ -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)