fbdev: propagate result of fb_videomode_from_videomode()

fb_videomode_from_videomode() may fail, but of_get_fb_videomode()
silently covers this fact. Instead, trow the error code to the
caller.

Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c
index 01ef1b953390..d787533d9c8b 100644
--- a/drivers/video/fbdev/core/fbmon.c
+++ b/drivers/video/fbdev/core/fbmon.c
@@ -1475,7 +1475,9 @@ int of_get_fb_videomode(struct device_node *np, struct fb_videomode *fb,
         if (ret)
                 return ret;
 
-        fb_videomode_from_videomode(&vm, fb);
+        ret = fb_videomode_from_videomode(&vm, fb);
+        if (ret)
+                return ret;
 
         pr_debug("%s: got %dx%d display mode from %s\n",
                 of_node_full_name(np), vm.hactive, vm.vactive, np->name);