This is a note to let you know that I've just added the patch titled drm/panel: nt35510: Do not fail if DSI read fails to the 5.13-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-panel-nt35510-do-not-fail-if-dsi-read-fails.patch and it can be found in the queue-5.13 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 1988e0d84161dabd99d1c27033fbd6ee439bf432 Mon Sep 17 00:00:00 2001 From: Linus Walleij <linus.walleij@xxxxxxxxxx> Date: Fri, 4 Jun 2021 01:18:30 +0200 Subject: drm/panel: nt35510: Do not fail if DSI read fails From: Linus Walleij <linus.walleij@xxxxxxxxxx> commit 1988e0d84161dabd99d1c27033fbd6ee439bf432 upstream. Failing to read the MTP over DSI should not bring down the system and make us bail out from using the display, it turns out that this happens when toggling the display off and on, and that write is often still working so the display output is just fine. Printing an error is enough. Tested by killing the Gnome session repeatedly on the Samsung Skomer. Fixes: 899f24ed8d3a ("drm/panel: Add driver for Novatek NT35510-based panels") Cc: Stephan Gerhold <stephan@xxxxxxxxxxx> Reported-by: newbyte@xxxxxxxxxxx Acked-by: Stefan Hansson <newbyte@xxxxxxxxxxx> Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Link: https://patchwork.freedesktop.org/patch/msgid/20210603231830.3200040-1-linus.walleij@xxxxxxxxxx Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/panel/panel-novatek-nt35510.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) --- a/drivers/gpu/drm/panel/panel-novatek-nt35510.c +++ b/drivers/gpu/drm/panel/panel-novatek-nt35510.c @@ -706,9 +706,7 @@ static int nt35510_power_on(struct nt355 if (ret) return ret; - ret = nt35510_read_id(nt); - if (ret) - return ret; + nt35510_read_id(nt); /* Set up stuff in manufacturer control, page 1 */ ret = nt35510_send_long(nt, dsi, MCS_CMD_MAUCCTR, Patches currently in stable-queue which might be from linus.walleij@xxxxxxxxxx are queue-5.13/arm-dts-ux500-fix-orientation-of-accelerometer.patch queue-5.13/arm-dts-gemini-add-device_type-on-pci.patch queue-5.13/drm-panel-nt35510-do-not-fail-if-dsi-read-fails.patch queue-5.13/arm-dts-ux500-fix-some-compatible-strings.patch queue-5.13/arm-dts-ux500-rename-gpio-controller-node.patch queue-5.13/arm-dts-gemini-rename-mdio-to-the-right-name.patch queue-5.13/arm-dts-ux500-fix-interrupt-cells.patch queue-5.13/arm-dts-ux500-fix-orientation-of-janice-acceleromete.patch