Commit 1988e0d8 authored by Linus Walleij's avatar Linus Walleij
Browse files

drm/panel: nt35510: Do not fail if DSI read fails 



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: 899f24ed ("drm/panel: Add driver for Novatek NT35510-based panels")
Cc: Stephan Gerhold <stephan@gerhold.net>
Reported-by: default avatar <newbyte@disroot.org>
Acked-by: default avatarStefan Hansson <newbyte@disroot.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210603231830.3200040-1-linus.walleij@linaro.org
parent d3300991

drivers/gpu/drm/panel/panel-novatek-nt35510.c

+1 −3
Original line number Diff line number Diff line
@@ -706,9 +706,7 @@ static int nt35510_power_on(struct nt35510 *nt) 
	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,