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From c8fe40264bfdb0cae6838f8fdbe88100c409fb2d Mon Sep 17 00:00:00 2001
From: Jean Delvare <jdelvare@suse.de>
Date: Wed, 4 Sep 2019 11:12:48 +0200
Subject: [PATCH 3805/4256] drm/amd: be quiet when no SAD block is found
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
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.
This fixes half of bug fdo#107825:
https://bugs.freedesktop.org/show_bug.cgi?id=107825
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
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>
Cc: Harry Wentland <harry.wentland@amd.com>
Cc: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/dce_v10_0.c | 4 ++--
drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 4 ++--
drivers/gpu/drm/amd/amdgpu/dce_v6_0.c | 4 ++--
drivers/gpu/drm/amd/amdgpu/dce_v8_0.c | 4 ++--
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c | 7 +++----
5 files changed, 11 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
index 6cc3498fce9e..c35181e2bfe7 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
@@ -1349,10 +1349,10 @@ static void dce_v10_0_audio_write_sad_regs(struct drm_encoder *encoder)
}
sad_count = drm_edid_to_sad(amdgpu_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);
for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
index 73b91e1f1cd9..f459fc70074c 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
@@ -1375,10 +1375,10 @@ static void dce_v11_0_audio_write_sad_regs(struct drm_encoder *encoder)
}
sad_count = drm_edid_to_sad(amdgpu_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);
for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
index 04c81df035c3..bcea8a1a6ba6 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
@@ -1252,10 +1252,10 @@ static void dce_v6_0_audio_write_sad_regs(struct drm_encoder *encoder)
}
sad_count = drm_edid_to_sad(amdgpu_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;
- }
for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
u32 tmp = 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
index b239b04bd6c0..37fd742ab62d 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
@@ -1302,10 +1302,10 @@ static void dce_v8_0_audio_write_sad_regs(struct drm_encoder *encoder)
}
sad_count = drm_edid_to_sad(amdgpu_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);
for (i = 0; i < ARRAY_SIZE(eld_reg_to_type); i++) {
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 1f0c8821af53..d14284602ced 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
@@ -98,11 +98,10 @@ 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_INFO("SADs count is: %d, don't need to read it\n",
- sad_count);
+ if (sad_count < 0)
+ DRM_ERROR("Couldn't read SADs: %d\n", sad_count);
+ if (sad_count <= 0)
return result;
- }
edid_caps->audio_mode_count = sad_count < DC_MAX_AUDIO_DESC_COUNT ? sad_count : DC_MAX_AUDIO_DESC_COUNT;
for (i = 0; i < edid_caps->audio_mode_count; ++i) {
--
2.17.1
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