[PATCH AUTOSEL 5.5 160/542] drm/amdgpu/dm: Do not throw an error for a display with no audio

Sasha Levin
2020-02-14T15:52:44Z

From: Chris Wilson <chris@chris-wilson.co.uk>

[ Upstream commit 852a91d627e9ce849d68df9d3f5336689003bdc7 ]

An old display with no audio may not have an EDID with a CEA block, or
it may simply be too old to support audio. This is not a driver error,
so don't flag it as such.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=112140
References: ae2a3495973e ("drm/amd: be quiet when no SAD block is found")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Jean Delvare <jdelvare@suse.de>
Cc: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 2 --
1 file changed, 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
index 0b401dfbe98a9..34f483ac36ca4 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -97,8 +97,6 @@ enum dc_edid_status dm_helpers_parse_edid_caps(
(struct edid *) edid->raw_edid);

sad_count = drm_edid_to_sad((struct edid *) edid->raw_edid, &sads);
- if (sad_count < 0)
- DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
if (sad_count <= 0)
return result;