This is a note to let you know that I've just added the patch titled
drm: bridge: it66121: ->get_edid callback must not return err pointers
to the 6.6-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-bridge-it66121-get_edid-callback-must-not-return-err-pointers.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 81995ee1620318b4c7bbeb02bcc372da2c078c76 Mon Sep 17 00:00:00 2001
From: Jani Nikula <jani.nikula@xxxxxxxxx>
Date: Thu, 14 Sep 2023 16:11:59 +0300
Subject: drm: bridge: it66121: ->get_edid callback must not return err pointers
From: Jani Nikula <jani.nikula@xxxxxxxxx>
commit 81995ee1620318b4c7bbeb02bcc372da2c078c76 upstream.
The drm stack does not expect error valued pointers for EDID anywhere.
Fixes: e66856508746 ("drm: bridge: it66121: Set DDC preamble only once before reading EDID")
Cc: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
Cc: Robert Foss <robert.foss@xxxxxxxxxx>
Cc: Phong LE <ple@xxxxxxxxxxxx>
Cc: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Cc: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>
Cc: Robert Foss <rfoss@xxxxxxxxxx>
Cc: Laurent Pinchart <Laurent.pinchart@xxxxxxxxxxxxxxxx>
Cc: Jonas Karlman <jonas@xxxxxxxxx>
Cc: Jernej Skrabec <jernej.skrabec@xxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx> # v6.3+
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20230914131159.2472513-1-jani.nikula@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/bridge/ite-it66121.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/bridge/ite-it66121.c
+++ b/drivers/gpu/drm/bridge/ite-it66121.c
@@ -884,14 +884,14 @@ static struct edid *it66121_bridge_get_e
mutex_lock(&ctx->lock);
ret = it66121_preamble_ddc(ctx);
if (ret) {
- edid = ERR_PTR(ret);
+ edid = NULL;
goto out_unlock;
}
ret = regmap_write(ctx->regmap, IT66121_DDC_HEADER_REG,
IT66121_DDC_HEADER_EDID);
if (ret) {
- edid = ERR_PTR(ret);
+ edid = NULL;
goto out_unlock;
}
Patches currently in stable-queue which might be from jani.nikula@xxxxxxxxx are
queue-6.6/drm-bridge-it66121-get_edid-callback-must-not-return-err-pointers.patch
queue-6.6/drm-msm-dp-skip-validity-check-for-dp-cts-edid-check.patch
queue-6.6/i915-perf-fix-null-deref-bugs-with-drm_dbg-calls.patch
queue-6.6/drm-mediatek-dp-fix-memory-leak-on-get_edid-callback-error-path.patch
queue-6.6/drm-edid-fixup-h-vsync_end-instead-of-h-vtotal.patch
queue-6.6/drm-mediatek-dp-fix-memory-leak-on-get_edid-callback-audio-detection.patch
queue-6.6/drm-i915-mtl-avoid-stringop-overflow-warning.patch
queue-6.6/drm-i915-tc-fix-wformat-truncation-in-intel_tc_port_.patch
