[PATCH] video: Demote panel timing not found error message

[Thierry Reding]

From: Thierry Reding <treding at nvidia.com>

Failing to find a panel-timing node is not an error in all cases, so do
not output an error message in that case. Instead turn it into a debug
message and make the drivers that care about it output an error message
of their own.

Signed-off-by: Thierry Reding <treding at nvidia.com>
---
 drivers/gpu/drm/panel/panel-lvds.c | 4 +++-
 drivers/video/fbdev/amba-clcd.c    | 4 +++-
 drivers/video/of_display_timing.c  | 2 +-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-lvds.c b/drivers/gpu/drm/panel/panel-lvds.c
index 1ec57d0806a8..7fcb3527c788 100644
--- a/drivers/gpu/drm/panel/panel-lvds.c
+++ b/drivers/gpu/drm/panel/panel-lvds.c
@@ -147,8 +147,10 @@ static int panel_lvds_parse_dt(struct panel_lvds *lvds)
 	int ret;
 
 	ret = of_get_display_timing(np, "panel-timing", &timing);
-	if (ret < 0)
+	if (ret < 0) {
+		dev_err(lvds->dev, "%pOF: could not find panel timing\n", np);
 		return ret;
+	}
 
 	videomode_from_timing(&timing, &lvds->video_mode);
 
diff --git a/drivers/video/fbdev/amba-clcd.c b/drivers/video/fbdev/amba-clcd.c
index 89324e42a033..13df898a3481 100644
--- a/drivers/video/fbdev/amba-clcd.c
+++ b/drivers/video/fbdev/amba-clcd.c
@@ -561,8 +561,10 @@ static int clcdfb_of_get_dpi_panel_mode(struct device_node *node,
 	struct videomode video;
 
 	err = of_get_display_timing(node, "panel-timing", &timing);
-	if (err)
+	if (err) {
+		pr_err("%pOF: could not find panel timing\n", node);
 		return err;
+	}
 
 	videomode_from_timing(&timing, &video);
 
diff --git a/drivers/video/of_display_timing.c b/drivers/video/of_display_timing.c
index f5c1c469c0af..9385b518349f 100644
--- a/drivers/video/of_display_timing.c
+++ b/drivers/video/of_display_timing.c
@@ -125,7 +125,7 @@ int of_get_display_timing(const struct device_node *np, const char *name,
 
 	timing_np = of_get_child_by_name(np, name);
 	if (!timing_np) {
-		pr_err("%pOF: could not find node '%s'\n", np, name);
+		pr_debug("%pOF: could not find node '%s'\n", np, name);
 		return -ENOENT;
 	}
 
-- 
2.22.0