[PATCH 17/33] pinctrl: armada-37xx: use match_string() helper

[Yisheng Xie]

match_string() returns the index of an array for a matching string,
which can be used intead of open coded variant.

Cc: Jason Cooper <ja...@lakedaemon.net>
Cc: Andrew Lunn <and...@lunn.ch>
Cc: Gregory Clement <gregory.clem...@bootlin.com>
Cc: Sebastian Hesselbarth <sebastian.hesselba...@gmail.com>
Cc: Linus Walleij <linus.wall...@linaro.org>
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-g...@vger.kernel.org
Signed-off-by: Yisheng Xie <xieyishe...@huawei.com>
---
 drivers/pinctrl/mvebu/pinctrl-armada-37xx.c | 16 ++--------------
 1 file changed, 2 insertions(+), 14 deletions(-)

diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c 
b/drivers/pinctrl/mvebu/pinctrl-armada-37xx.c
index 5b63248..e338327 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 +332,10 @@ 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];
 
-- 
1.7.12.4