pinctrl: convert to use match_string() helper

The new helper returns index of the mathing string in an array.  We
would use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 10 deletions

diff --git a/drivers/pinctrl/pinmux.c b/drivers/pinctrl/pinmux.c
index 29984b36926a..c223a9ef1fe1 100644
--- a/drivers/pinctrl/pinmux.c
+++ b/drivers/pinctrl/pinmux.c
@@ -334,7 +334,6 @@ int pinmux_map_to_setting(struct pinctrl_map const *map,
         unsigned num_groups;
         int ret;
         const char *group;
-        int i;
 
         if (!pmxops) {
                 dev_err(pctldev->dev, "does not support mux function\n");
@@ -363,19 +362,13 @@ int pinmux_map_to_setting(struct pinctrl_map const *map,
                 return -EINVAL;
         }
         if (map->data.mux.group) {
-                bool found = false;
                 group = map->data.mux.group;
-                for (i = 0; i < num_groups; i++) {
-                        if (!strcmp(group, groups[i])) {
-                                found = true;
-                                break;
-                        }
-                }
-                if (!found) {
+                ret = match_string(groups, num_groups, group);
+                if (ret < 0) {
                         dev_err(pctldev->dev,
                                 "invalid group \"%s\" for function \"%s\"\n",
                                 group, map->data.mux.function);
-                        return -EINVAL;
+                        return ret;
                 }
         } else {
                 group = groups[0];