power: ab8500: 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>

4 files changed, 20 insertions, 40 deletions

diff --git a/drivers/power/ab8500_btemp.c b/drivers/power/ab8500_btemp.c
index 8f8044e1acf3..bf2e5dd301e7 100644
--- a/drivers/power/ab8500_btemp.c
+++ b/drivers/power/ab8500_btemp.c
@@ -906,26 +906,21 @@ static int ab8500_btemp_get_property(struct power_supply *psy,
 static int ab8500_btemp_get_ext_psy_data(struct device *dev, void *data)
 {
         struct power_supply *psy;
-        struct power_supply *ext;
+        struct power_supply *ext = dev_get_drvdata(dev);
+        const char **supplicants = (const char **)ext->supplied_to;
         struct ab8500_btemp *di;
         union power_supply_propval ret;
-        int i, j;
-        bool psy_found = false;
+        int j;
 
         psy = (struct power_supply *)data;
-        ext = dev_get_drvdata(dev);
         di = power_supply_get_drvdata(psy);
 
         /*
          * For all psy where the name of your driver
          * appears in any supplied_to
          */
-        for (i = 0; i < ext->num_supplicants; i++) {
-                if (!strcmp(ext->supplied_to[i], psy->desc->name))
-                        psy_found = true;
-        }
-
-        if (!psy_found)
+        j = match_string(supplicants, ext->num_supplicants, psy->desc->name);
+        if (j < 0)
                 return 0;
 
         /* Go through all properties for the psy */
diff --git a/drivers/power/ab8500_charger.c b/drivers/power/ab8500_charger.c
index e388171f4e58..30de5d42b26a 100644
--- a/drivers/power/ab8500_charger.c
+++ b/drivers/power/ab8500_charger.c
@@ -1929,11 +1929,11 @@ static int ab8540_charger_usb_pre_chg_enable(struct ux500_charger *charger,
 static int ab8500_charger_get_ext_psy_data(struct device *dev, void *data)
 {
         struct power_supply *psy;
-        struct power_supply *ext;
+        struct power_supply *ext = dev_get_drvdata(dev);
+        const char **supplicants = (const char **)ext->supplied_to;
         struct ab8500_charger *di;
         union power_supply_propval ret;
-        int i, j;
-        bool psy_found = false;
+        int j;
         struct ux500_charger *usb_chg;
 
         usb_chg = (struct ux500_charger *)data;
@@ -1941,15 +1941,9 @@ static int ab8500_charger_get_ext_psy_data(struct device *dev, void *data)
 
         di = to_ab8500_charger_usb_device_info(usb_chg);
 
-        ext = dev_get_drvdata(dev);
-
         /* For all psy where the driver name appears in any supplied_to */
-        for (i = 0; i < ext->num_supplicants; i++) {
-                if (!strcmp(ext->supplied_to[i], psy->desc->name))
-                        psy_found = true;
-        }
-
-        if (!psy_found)
+        j = match_string(supplicants, ext->num_supplicants, psy->desc->name);
+        if (j < 0)
                 return 0;
 
         /* Go through all properties for the psy */
diff --git a/drivers/power/ab8500_fg.c b/drivers/power/ab8500_fg.c
index 3830dade5d69..5a36cf88578a 100644
--- a/drivers/power/ab8500_fg.c
+++ b/drivers/power/ab8500_fg.c
@@ -2168,26 +2168,21 @@ static int ab8500_fg_get_property(struct power_supply *psy,
 static int ab8500_fg_get_ext_psy_data(struct device *dev, void *data)
 {
         struct power_supply *psy;
-        struct power_supply *ext;
+        struct power_supply *ext = dev_get_drvdata(dev);
+        const char **supplicants = (const char **)ext->supplied_to;
         struct ab8500_fg *di;
         union power_supply_propval ret;
-        int i, j;
-        bool psy_found = false;
+        int j;
 
         psy = (struct power_supply *)data;
-        ext = dev_get_drvdata(dev);
         di = power_supply_get_drvdata(psy);
 
         /*
          * For all psy where the name of your driver
          * appears in any supplied_to
          */
-        for (i = 0; i < ext->num_supplicants; i++) {
-                if (!strcmp(ext->supplied_to[i], psy->desc->name))
-                        psy_found = true;
-        }
-
-        if (!psy_found)
+        j = match_string(supplicants, ext->num_supplicants, psy->desc->name);
+        if (j < 0)
                 return 0;
 
         /* Go through all properties for the psy */
diff --git a/drivers/power/abx500_chargalg.c b/drivers/power/abx500_chargalg.c
index 541f702e0451..d9104b1ab7cf 100644
--- a/drivers/power/abx500_chargalg.c
+++ b/drivers/power/abx500_chargalg.c
@@ -975,22 +975,18 @@ static void handle_maxim_chg_curr(struct abx500_chargalg *di)
 static int abx500_chargalg_get_ext_psy_data(struct device *dev, void *data)
 {
         struct power_supply *psy;
-        struct power_supply *ext;
+        struct power_supply *ext = dev_get_drvdata(dev);
+        const char **supplicants = (const char **)ext->supplied_to;
         struct abx500_chargalg *di;
         union power_supply_propval ret;
-        int i, j;
-        bool psy_found = false;
+        int j;
         bool capacity_updated = false;
 
         psy = (struct power_supply *)data;
-        ext = dev_get_drvdata(dev);
         di = power_supply_get_drvdata(psy);
         /* For all psy where the driver name appears in any supplied_to */
-        for (i = 0; i < ext->num_supplicants; i++) {
-                if (!strcmp(ext->supplied_to[i], psy->desc->name))
-                        psy_found = true;
-        }
-        if (!psy_found)
+        j = match_string(supplicants, ext->num_supplicants, psy->desc->name);
+        if (j < 0)
                 return 0;
 
         /*