sunxi: A64: OHCI: prevent turning off shared USB clock

[u-boot] / drivers / power / power_i2c.c

diff --git a/drivers/power/power_i2c.c b/drivers/power/power_i2c.c
index 0dcf9fe9187307c4240153c6bada20a808ebdf6c..bcddff2d7a05aa0653d192749abdf480f512a8a1 100644 (file)
--- a/drivers/power/power_i2c.c
+++ b/drivers/power/power_i2c.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright (C) 2011 Samsung Electronics
  * Lukasz Majewski <l.majewski@samsung.com>
@@ -6,8 +7,6 @@
  * Stefano Babic, DENX Software Engineering, sbabic@denx.de
  *
  * (C) Copyright 2008-2009 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier:    GPL-2.0+
  */
 
 #include <common.h>
@@ -21,7 +20,7 @@ int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
        unsigned char buf[4] = { 0 };
 
        if (check_reg(p, reg))
-               return -1;
+               return -EINVAL;
 
        I2C_SET_BUS(p->bus);
 
@@ -51,27 +50,26 @@ int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
                break;
        default:
                printf("%s: invalid tx_num: %d", __func__, pmic_i2c_tx_num);
-               return -1;
+               return -EINVAL;
        }
 
-       if (i2c_write(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num))
-               return -1;
-
-       return 0;
+       return i2c_write(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num);
 }
 
 int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
 {
        unsigned char buf[4] = { 0 };
        u32 ret_val = 0;
+       int ret;
 
        if (check_reg(p, reg))
-               return -1;
+               return -EINVAL;
 
        I2C_SET_BUS(p->bus);
 
-       if (i2c_read(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num))
-               return -1;
+       ret = i2c_read(pmic_i2c_addr, reg, 1, buf, pmic_i2c_tx_num);
+       if (ret)
+               return ret;
 
        switch (pmic_i2c_tx_num) {
        case 3:
@@ -93,7 +91,7 @@ int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
                break;
        default:
                printf("%s: invalid tx_num: %d", __func__, pmic_i2c_tx_num);
-               return -1;
+               return -EINVAL;
        }
        memcpy(val, &ret_val, sizeof(ret_val));
 
@@ -106,7 +104,7 @@ int pmic_probe(struct pmic *p)
        debug("Bus: %d PMIC:%s probed!\n", p->bus, p->name);
        if (i2c_probe(pmic_i2c_addr)) {
                printf("Can't find PMIC:%s\n", p->name);
-               return -1;
+               return -ENODEV;
        }
 
        return 0;