colibri_imx6: fix video stdout in default environment

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

diff --git a/drivers/power/power_spi.c b/drivers/power/power_spi.c
index 1e554461f30706f091d788a1032f56808154c54d..1eaf9773ef8b35aa93a472575e46254462a7ba63 100644 (file)
--- a/drivers/power/power_spi.c
+++ b/drivers/power/power_spi.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>
@@ -27,14 +26,14 @@ static u32 pmic_reg(struct pmic *p, u32 reg, u32 *val, u32 write)
                                        p->hw.spi.mode);
 
                if (!slave)
-                       return -1;
+                       return -ENODEV;
        }
 
        if (check_reg(p, reg))
-               return -1;
+               return -EINVAL;
 
        if (spi_claim_bus(slave))
-               return -1;
+               return -EBUSY;
 
        pmic_tx = p->hw.spi.prepare_tx(reg, val, write);
 
@@ -59,21 +58,15 @@ static u32 pmic_reg(struct pmic *p, u32 reg, u32 *val, u32 write)
 
 err:
        spi_release_bus(slave);
-       return -1;
+       return -ENOTSUPP;
 }
 
 int pmic_reg_write(struct pmic *p, u32 reg, u32 val)
 {
-       if (pmic_reg(p, reg, &val, 1))
-               return -1;
-
-       return 0;
+       return pmic_reg(p, reg, &val, 1);
 }
 
 int pmic_reg_read(struct pmic *p, u32 reg, u32 *val)
 {
-       if (pmic_reg(p, reg, val, 0))
-               return -1;
-
-       return 0;
+       return pmic_reg(p, reg, val, 0);
 }