FAILED: patch "[PATCH] drm/panel: boe-tv101wum-nl6: restore MODE_LPM after sending" failed to apply to 6.6-stable tree

[<gregkh@linuxfoundation.org>]

The patch below does not apply to the 6.6-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@vger.kernel.org>.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-6.6.y
git checkout FETCH_HEAD
git cherry-pick -x 570cf799e87ae805eacfab3b4ba66676b5fccdb6
# <resolve conflicts, build, test, etc.>
git commit -s
git send-email --to '<stable@vger.kernel.org>' --in-reply-to '2026051552-repost-region-e57a@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^..

Possible dependencies:



thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From 570cf799e87ae805eacfab3b4ba66676b5fccdb6 Mon Sep 17 00:00:00 2001
From: Icenowy Zheng <zhengxingda@iscas.ac.cn>
Date: Sun, 3 May 2026 17:17:08 +0800
Subject: [PATCH] drm/panel: boe-tv101wum-nl6: restore MODE_LPM after sending
 disable cmds

When preparing the panel, it seems that it always expects commands to be
transferred in LP mode. However, the disable function removes the
MIPI_DSI_MODE_LPM flag, and no other function re-adds it.

As the unprepare function contains no DSI commands, re-adding the flag
just after disabling the panel should be safe. Add the code re-adding
the flag after the two commands for disabling the panel are sent.

This fixes error messages shown in kernel log when unblanking on
mt8183-kukui-kodama-sku32 device.

Cc: stable@vger.kernel.org
Fixes: a869b9db7adf ("drm/panel: support for boe tv101wum-nl6 wuxga dsi video mode panel")
Signed-off-by: Icenowy Zheng <zhengxingda@iscas.ac.cn>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260503091708.1079962-1-zhengxingda@iscas.ac.cn

diff --git a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
index d5fe105bdbdd..658ce64c71eb 100644
--- a/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
+++ b/drivers/gpu/drm/panel/panel-boe-tv101wum-nl6.c
@@ -1324,6 +1324,8 @@ static int boe_panel_disable(struct drm_panel *panel)
 	mipi_dsi_dcs_set_display_off_multi(&ctx);
 	mipi_dsi_dcs_enter_sleep_mode_multi(&ctx);
 
+	boe->dsi->mode_flags |= MIPI_DSI_MODE_LPM;
+
 	mipi_dsi_msleep(&ctx, 150);
 
 	return ctx.accum_err;