This is a note to let you know that I've just added the patch titled
drm/edid: check basic audio support on CEA extension block
to the 5.16-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-edid-check-basic-audio-support-on-cea-extension-block.patch
and it can be found in the queue-5.16 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 5662abf6e21338be6d085d6375d3732ac6147fd2 Mon Sep 17 00:00:00 2001
From: Cooper Chiou <[email protected]>
Date: Thu, 24 Mar 2022 14:12:18 +0800
Subject: drm/edid: check basic audio support on CEA extension block
From: Cooper Chiou <[email protected]>
commit 5662abf6e21338be6d085d6375d3732ac6147fd2 upstream.
Tag code stored in bit7:5 for CTA block byte[3] is not the same as
CEA extension block definition. Only check CEA block has
basic audio support.
v3: update commit message.
Cc: [email protected]
Cc: Jani Nikula <[email protected]>
Cc: Shawn C Lee <[email protected]>
Cc: intel-gfx <[email protected]>
Signed-off-by: Cooper Chiou <[email protected]>
Signed-off-by: Lee Shawn C <[email protected]>
Fixes: e28ad544f462 ("drm/edid: parse CEA blocks embedded in DisplayID")
Reviewed-by: Jani Nikula <[email protected]>
Signed-off-by: Jani Nikula <[email protected]>
Link:
https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/drm_edid.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -4848,7 +4848,8 @@ bool drm_detect_monitor_audio(struct edi
if (!edid_ext)
goto end;
- has_audio = ((edid_ext[3] & EDID_BASIC_AUDIO) != 0);
+ has_audio = (edid_ext[0] == CEA_EXT &&
+ (edid_ext[3] & EDID_BASIC_AUDIO) != 0);
if (has_audio) {
DRM_DEBUG_KMS("Monitor has basic audio support\n");
Patches currently in stable-queue which might be from [email protected] are
queue-5.16/drm-edid-check-basic-audio-support-on-cea-extension-block.patch
