pinctrl: a minor error checking improvement for pinconf

Also checking invalid num_configs when validate the pinconf map.

Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/pinctrl/pinconf.c b/drivers/pinctrl/pinconf.c
index 7ce139ef7e64..43f474cdc110 100644
--- a/drivers/pinctrl/pinconf.c
+++ b/drivers/pinctrl/pinconf.c
@@ -50,9 +50,9 @@ int pinconf_validate_map(struct pinctrl_map const *map, int i)
                 return -EINVAL;
         }
 
-        if (map->data.configs.num_configs &&
+        if (!map->data.configs.num_configs ||
                         !map->data.configs.configs) {
-                pr_err("failed to register map %s (%d): no configs ptr given\n",
+                pr_err("failed to register map %s (%d): no configs given\n",
                        map->name, i);
                 return -EINVAL;
         }