power: change from meaningless value to error number

[oweals/u-boot.git] / drivers / power / mfd / pmic_max77693.c

diff --git a/drivers/power/mfd/pmic_max77693.c b/drivers/power/mfd/pmic_max77693.c
index 6b28e28b3f86c3c643cd9beb0c8b9d1403fd5a63..c63390ed48ec25517e76ca39663984b8b3e926ea 100644 (file)
--- a/drivers/power/mfd/pmic_max77693.c
+++ b/drivers/power/mfd/pmic_max77693.c
@@ -16,7 +16,7 @@ static int max77693_charger_state(struct pmic *p, int state, int current)
        unsigned int val;
 
        if (pmic_probe(p))
-               return -1;
+               return -ENODEV;
 
        /* unlock write capability */
        val = MAX77693_CHG_UNLOCK;
@@ -27,13 +27,13 @@ static int max77693_charger_state(struct pmic *p, int state, int current)
                pmic_reg_read(p, MAX77693_CHG_CNFG_00, &val);
                val &= ~0x01;
                pmic_reg_write(p, MAX77693_CHG_CNFG_00, val);
-               return -1;
+               return -ENOTSUPP;
        }
 
        if (current < CHARGER_MIN_CURRENT || current > CHARGER_MAX_CURRENT) {
                printf("%s: Wrong charge current: %d [mA]\n",
                       __func__, current);
-               return -1;
+               return -EINVAL;
        }
 
        /* set charging current */
@@ -59,7 +59,7 @@ static int max77693_charger_bat_present(struct pmic *p)
        unsigned int val;
 
        if (pmic_probe(p))
-               return -1;
+               return -ENODEV;
 
        pmic_reg_read(p, MAX77693_CHG_INT_OK, &val);