Patch "drm/amd/display: Add one to EDID's audio channel count when passing to DC" has been added to the 4.15-stable tree

Patch "drm/amd/display: Add one to EDID's audio channel count when passing to DC" has been added to the 4.15-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    drm/amd/display: Add one to EDID's audio channel count when passing to DC

to the 4.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-amd-display-add-one-to-edid-s-audio-channel-count-when-passing-to-dc.patch
and it can be found in the queue-4.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 731a373698c9675d5aed8a30d8c9861bea9c41a2 Mon Sep 17 00:00:00 2001
From: Harry Wentland <harry.wentland@amd.com>
Date: Wed, 7 Mar 2018 13:45:33 -0500
Subject: drm/amd/display: Add one to EDID's audio channel count when passing to DC

From: Harry Wentland <harry.wentland@amd.com>

commit 731a373698c9675d5aed8a30d8c9861bea9c41a2 upstream.

DC takes channel count to mean the actual count. cea_sad's channels
represent it as number of channels - 1.

Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
@@ -109,7 +109,7 @@ enum dc_edid_status dm_helpers_parse_edi
 		struct cea_sad *sad = &sads[i];
 
 		edid_caps->audio_modes[i].format_code = sad->format;
-		edid_caps->audio_modes[i].channel_count = sad->channels;
+		edid_caps->audio_modes[i].channel_count = sad->channels + 1;
 		edid_caps->audio_modes[i].sample_rate = sad->freq;
 		edid_caps->audio_modes[i].sample_size = sad->byte2;
 	}


Patches currently in stable-queue which might be from harry.wentland@amd.com are

queue-4.15/drm-amd-display-add-one-to-edid-s-audio-channel-count-when-passing-to-dc.patch
queue-4.15/drm-amd-display-we-shouldn-t-set-format_default-on-plane-as-atomic-driver.patch