video: ARM CLCD: fix return value check in versatile_clcd_init_panel()

In case of error, the function syscon_node_to_regmap() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().

Fixes: 25348160e9a4 ("video: ARM CLCD: add special panel hook for Versatiles")
Signed-off-by: Wei Yongjun <weiyj.lk@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --git a/drivers/video/fbdev/amba-clcd-versatile.c b/drivers/video/fbdev/amba-clcd-versatile.c
index 9a90817..56161f9 100644 (file)
--- a/drivers/video/fbdev/amba-clcd-versatile.c
+++ b/drivers/video/fbdev/amba-clcd-versatile.c
@@ -528,9 +528,9 @@ int versatile_clcd_init_panel(struct clcd_fb *fb,
        versatile_clcd_type = (enum versatile_clcd)clcd_id->data;
 
        map = syscon_node_to_regmap(np);
-       if (!map) {
+       if (IS_ERR(map)) {
                dev_err(dev, "no Versatile syscon regmap\n");
-               return -ENODEV;
+               return PTR_ERR(map);
        }
 
        switch (versatile_clcd_type) {