pinctrl: armada-37xx: Convert to use match_string() helper

The new helper returns index of the matching string in an array.
We are going to use it here.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 8 insertions, 21 deletions

diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
index 5b63248c8209..0f1eafba0ded 100644
--- a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
+++ b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
@@ -214,18 +214,6 @@ static inline void armada_37xx_update_reg(unsigned int *reg,
         }
 }
 
-static int armada_37xx_get_func_reg(struct armada_37xx_pin_group *grp,
-                                    const char *func)
-{
-        int f;
-
-        for (f = 0; (f < NB_FUNCS) && grp->funcs[f]; f++)
-                if (!strcmp(grp->funcs[f], func))
-                        return f;
-
-        return -ENOTSUPP;
-}
-
 static struct armada_37xx_pin_group *armada_37xx_find_next_grp_by_pin(
         struct armada_37xx_pinctrl *info, int pin, int *grp)
 {
@@ -344,10 +332,9 @@ static int armada_37xx_pmx_set_by_name(struct pinctrl_dev *pctldev,
         dev_dbg(info->dev, "enable function %s group %s\n",
                 name, grp->name);
 
-        func = armada_37xx_get_func_reg(grp, name);
-
+        func = match_string(grp->funcs, NB_FUNCS, name);
         if (func < 0)
-                return func;
+                return -ENOTSUPP;
 
         val = grp->val[func];
 
@@ -932,12 +919,12 @@ static int armada_37xx_fill_func(struct armada_37xx_pinctrl *info)
                         struct armada_37xx_pin_group *gp = &info->groups[g];
                         int f;
 
-                        for (f = 0; (f < NB_FUNCS) && gp->funcs[f]; f++) {
-                                if (strcmp(gp->funcs[f], name) == 0) {
-                                        *groups = gp->name;
-                                        groups++;
-                                }
-                        }
+                        f = match_string(gp->funcs, NB_FUNCS, name);
+                        if (f < 0)
+                                continue;
+
+                        *groups = gp->name;
+                        groups++;
                 }
         }
         return 0;