phonesdk: slove the warnimg that the gpio used but not request

diff --git a/drivers/regulator/wm831x-dcdc.c b/drivers/regulator/wm831x-dcdc.c
index 42112f9ca011d8618cea6ffd9b8904675f5334b7..275fd7ad7ce705b422be0172d94cb61742d3fec4 100755 (executable)
--- a/drivers/regulator/wm831x-dcdc.c
+++ b/drivers/regulator/wm831x-dcdc.c
@@ -318,7 +318,6 @@ static int wm831x_buckv_set_dvs(struct regulator_dev *rdev, int state)
 int wm831x_reg_read(struct wm831x *wm831x, unsigned short reg);
 static int wm831x_buckv_read_voltage(struct regulator_dev *rdev)
 {
-       u16 r;
        int vol_read;
        int ret;
        struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev);
@@ -329,7 +328,6 @@ static int wm831x_buckv_read_voltage(struct regulator_dev *rdev)
        if (ret < 0)
                return ret;
        ret &= WM831X_DC1_ON_VSEL_MASK;
-       //printk("-readvoltage--%d---\n", ret);
        vol_read = (ret-8)*12500 + 600000;
 
        return vol_read;
@@ -357,8 +355,6 @@ static int wm831x_buckv_set_voltage(struct regulator_dev *rdev,
        if (dcdc->dvs_gpio && dcdc->dvs_vsel == vsel)
                return wm831x_buckv_set_dvs(rdev, 1);
 
-//     printk("min_uV = %d\n", min_uV);
-//     printk("vsel = %d\n", vsel);
        /* Always set the ON status to the minimum voltage */
        ret = wm831x_set_bits(wm831x, on_reg, WM831X_DC1_ON_VSEL_MASK, vsel);
        if (ret < 0)
@@ -433,8 +429,7 @@ static int wm831x_buckv_set_voltage_step(struct regulator_dev * rdev, int min_uV
        int old_vol;
        int new_min_uV,new_max_uV;
        int diff_value,step;
-       int ret;
-       int read_vol;
+       int ret=0;
 
        struct wm831x_dcdc *dcdc = rdev_get_drvdata(rdev); 
        struct wm831x *wm831x = dcdc->wm831x; 
@@ -479,7 +474,6 @@ static int wm831x_buckv_set_voltage_step(struct regulator_dev * rdev, int min_uV
                else                    //rise  voltage
                {
                        diff_value = (min_uV- old_vol); 
-                       gpio_direction_output(RK29_PIN1_PD7, GPIO_HIGH);
 
                        for(step = 100000; step<=diff_value; step += 100000)
                        {