usb: phy: gpio-vbus: don't ignore regulator APIs return value

Due to recent changes to regulator API, all
users which don't check regulator_{en,dis}able()'s
return value will generate compile warnings.

Add such checks to gpio-vbus.

Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/usb/phy/phy-gpio-vbus-usb.c b/drivers/usb/phy/phy-gpio-vbus-usb.c
index a7d4ac591982..4c76074e518d 100644
--- a/drivers/usb/phy/phy-gpio-vbus-usb.c
+++ b/drivers/usb/phy/phy-gpio-vbus-usb.c
@@ -61,6 +61,7 @@ static void set_vbus_draw(struct gpio_vbus_data *gpio_vbus, unsigned mA)
 {
         struct regulator *vbus_draw = gpio_vbus->vbus_draw;
         int enabled;
+        int ret;
 
         if (!vbus_draw)
                 return;
@@ -69,12 +70,16 @@ static void set_vbus_draw(struct gpio_vbus_data *gpio_vbus, unsigned mA)
         if (mA) {
                 regulator_set_current_limit(vbus_draw, 0, 1000 * mA);
                 if (!enabled) {
-                        regulator_enable(vbus_draw);
+                        ret = regulator_enable(vbus_draw);
+                        if (ret < 0)
+                                return;
                         gpio_vbus->vbus_draw_enabled = 1;
                 }
         } else {
                 if (enabled) {
-                        regulator_disable(vbus_draw);
+                        ret = regulator_disable(vbus_draw);
+                        if (ret < 0)
+                                return;
                         gpio_vbus->vbus_draw_enabled = 0;
                 }
         }