From: Philipp Zabel Date: Mon, 12 Jun 2017 15:54:29 +0000 (+0200) Subject: drm/imx: parallel-display: Accept drm_of_find_panel_or_bridge failure X-Git-Tag: v4.14-rc1~404^2^2 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=799ee2970485dc206c3bf347d6e6827c04d5e4f9;p=platform%2Fkernel%2Flinux-rpi.git drm/imx: parallel-display: Accept drm_of_find_panel_or_bridge failure The parallel panel driver should continue to work without having an endpoint linking to an panel in DT for backwards compatibility. With the recent switch to drm_of_find_panel_or_bridge, an absent panel results in a failure with -ENODEV error return code. To restore the old behaviour, ignore the -ENODEV return code. Reported-by: Nikita Yushchenko Fixes: ebc944613567 ("drm: convert drivers to use drm_of_find_panel_or_bridge") Tested-by: Chris Healy Cc: stable@vger.kernel.org Signed-off-by: Philipp Zabel --- diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c index 636031a..8aca202 100644 --- a/drivers/gpu/drm/imx/parallel-display.c +++ b/drivers/gpu/drm/imx/parallel-display.c @@ -237,7 +237,7 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data) /* port@1 is the output port */ ret = drm_of_find_panel_or_bridge(np, 1, 0, &imxpd->panel, &imxpd->bridge); - if (ret) + if (ret && ret != -ENODEV) return ret; imxpd->dev = dev;