[U-Boot] [PATCH v9 34/49] dm: power: Tidy up debugging output and return values

[Simon Glass]

The currect PMIC debugging is a little confusing. Adjust it so that it is
clear whether the operation succeeded or failed. Also, avoid creating a new
error return value when a perfectly good one is already available.

Signed-off-by: Simon Glass <s...@chromium.org>
---

Changes in v9: None
Changes in v2: None

 drivers/power/pmic/pmic-uclass.c           | 11 ++++++++---
 drivers/power/pmic/rk808.c                 | 14 ++++++++++----
 drivers/power/regulator/regulator-uclass.c |  2 +-
 3 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/drivers/power/pmic/pmic-uclass.c b/drivers/power/pmic/pmic-uclass.c
index 8b19998..7211026 100644
--- a/drivers/power/pmic/pmic-uclass.c
+++ b/drivers/power/pmic/pmic-uclass.c
@@ -133,8 +133,9 @@ int pmic_reg_read(struct udevice *dev, uint reg)
        u8 byte;
        int ret;
 
+       debug("%s: reg=%x", __func__, reg);
        ret = pmic_read(dev, reg, &byte, 1);
-       debug("%s: reg=%x, value=%x\n", __func__, reg, byte);
+       debug(", value=%x, ret=%d\n", byte, ret);
 
        return ret ? ret : byte;
 }
@@ -142,9 +143,13 @@ int pmic_reg_read(struct udevice *dev, uint reg)
 int pmic_reg_write(struct udevice *dev, uint reg, uint value)
 {
        u8 byte = value;
+       int ret;
+
+       debug("%s: reg=%x, value=%x", __func__, reg, value);
+       ret = pmic_write(dev, reg, &byte, 1);
+       debug(", ret=%d\n", ret);
 
-       debug("%s: reg=%x, value=%x\n", __func__, reg, value);
-       return pmic_write(dev, reg, &byte, 1);
+       return ret;
 }
 
 int pmic_clrsetbits(struct udevice *dev, uint reg, uint clr, uint set)
diff --git a/drivers/power/pmic/rk808.c b/drivers/power/pmic/rk808.c
index 11d5f07..770f471 100644
--- a/drivers/power/pmic/rk808.c
+++ b/drivers/power/pmic/rk808.c
@@ -30,9 +30,12 @@ static int rk808_reg_count(struct udevice *dev)
 static int rk808_write(struct udevice *dev, uint reg, const uint8_t *buff,
                          int len)
 {
-       if (dm_i2c_write(dev, reg, buff, len)) {
+       int ret;
+
+       ret = dm_i2c_write(dev, reg, buff, len);
+       if (ret) {
                debug("write error to device: %p register: %#x!", dev, reg);
-               return -EIO;
+               return ret;
        }
 
        return 0;
@@ -40,9 +43,12 @@ static int rk808_write(struct udevice *dev, uint reg, const 
uint8_t *buff,
 
 static int rk808_read(struct udevice *dev, uint reg, uint8_t *buff, int len)
 {
-       if (dm_i2c_read(dev, reg, buff, len)) {
+       int ret;
+
+       ret = dm_i2c_read(dev, reg, buff, len);
+       if (ret) {
                debug("read error from device: %p register: %#x!", dev, reg);
-               return -EIO;
+               return ret;
        }
 
        return 0;
diff --git a/drivers/power/regulator/regulator-uclass.c 
b/drivers/power/regulator/regulator-uclass.c
index 4241a4c..fec2886 100644
--- a/drivers/power/regulator/regulator-uclass.c
+++ b/drivers/power/regulator/regulator-uclass.c
@@ -178,7 +178,7 @@ static void regulator_show(struct udevice *dev, int ret)
                printf("; set %d uA", uc_pdata->min_uA);
        printf("; enabling");
        if (ret)
-               printf(" (ret: %d)\n", ret);
+               printf(" (ret: %d)", ret);
        printf("\n");
 }
 
-- 
2.7.0.rc3.207.g0ac5344

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