From: Marek Vasut marex@denx.de
[ Upstream commit 2bba782002c5dab6ca8d608b778b386fb912adff ]
The drm_of_lvds_get_data_mapping() returns either negative value on error or MEDIA_BUS_FMT_* otherwise. The check for 'ret' would also catch the positive case of MEDIA_BUS_FMT_* and lead to probe failure every time 'data-mapping' DT property is specified.
Fixes: 7c4dd0a266527 ("drm: of: Add drm_of_lvds_get_data_mapping") Signed-off-by: Marek Vasut marex@denx.de Cc: Laurent Pinchart laurent.pinchart@ideasonboard.com Cc: Sam Ravnborg sam@ravnborg.org To: dri-devel@lists.freedesktop.org Reviewed-by: Neil Armstrong narmstrong@baylibre.com Link: https://patchwork.freedesktop.org/patch/msgid/20220801125419.167562-1-marex@... Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/bridge/lvds-codec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/bridge/lvds-codec.c b/drivers/gpu/drm/bridge/lvds-codec.c index 702ea803a743..39e7004de720 100644 --- a/drivers/gpu/drm/bridge/lvds-codec.c +++ b/drivers/gpu/drm/bridge/lvds-codec.c @@ -180,7 +180,7 @@ static int lvds_codec_probe(struct platform_device *pdev) of_node_put(bus_node); if (ret == -ENODEV) { dev_warn(dev, "missing 'data-mapping' DT property\n"); - } else if (ret) { + } else if (ret < 0) { dev_err(dev, "invalid 'data-mapping' DT property\n"); return ret; } else {