When isl29028_set_proxim_sampling() fails, it was up to both callers to
log the failure message. This patch moves the logging into
isl29028_set_proxim_sampling() to reduce the overall amount of code in
the driver.

Signed-off-by: Brian Masney <masn...@onstation.org>
---
 drivers/staging/iio/light/isl29028.c | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

diff --git a/drivers/staging/iio/light/isl29028.c 
b/drivers/staging/iio/light/isl29028.c
index 23a4db8..0c8a878 100644
--- a/drivers/staging/iio/light/isl29028.c
+++ b/drivers/staging/iio/light/isl29028.c
@@ -79,18 +79,28 @@ struct isl29028_chip {
 static int isl29028_set_proxim_sampling(struct isl29028_chip *chip,
                                        unsigned int sampling)
 {
+       struct device *dev = regmap_get_device(chip->regmap);
        static unsigned int prox_period[] = {800, 400, 200, 100, 75, 50, 12, 0};
        unsigned int sel;
        unsigned int period = DIV_ROUND_UP(1000, sampling);
+       int ret;
 
        for (sel = 0; sel < ARRAY_SIZE(prox_period); ++sel) {
                if (period >= prox_period[sel])
                        break;
        }
 
-       return regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
-                                 ISL29028_CONF_PROX_SLP_MASK,
-                                 sel << ISL29028_CONF_PROX_SLP_SH);
+       ret = regmap_update_bits(chip->regmap, ISL29028_REG_CONFIGURE,
+                                ISL29028_CONF_PROX_SLP_MASK,
+                                sel << ISL29028_CONF_PROX_SLP_SH);
+       if (ret < 0)
+               dev_err(dev,
+                       "%s(): Error %d setting the proximity sampling\n",
+                       __func__, ret);
+       else
+               chip->prox_sampling = sampling;
+
+       return ret;
 }
 
 static int isl29028_enable_proximity(struct isl29028_chip *chip)
@@ -296,14 +306,6 @@ static int isl29028_write_raw(struct iio_dev *indio_dev,
                }
 
                ret = isl29028_set_proxim_sampling(chip, val);
-               if (ret < 0) {
-                       dev_err(dev,
-                               "Setting proximity samp_freq fail, err %d\n",
-                               ret);
-                       break;
-               }
-
-               chip->prox_sampling = val;
                break;
        case IIO_LIGHT:
                if (mask != IIO_CHAN_INFO_SCALE) {
@@ -452,10 +454,8 @@ static int isl29028_chip_init_and_power_on(struct 
isl29028_chip *chip)
        }
 
        ret = isl29028_set_proxim_sampling(chip, chip->prox_sampling);
-       if (ret < 0) {
-               dev_err(dev, "setting the proximity, err = %d\n", ret);
+       if (ret < 0)
                return ret;
-       }
 
        ret = isl29028_set_als_scale(chip, chip->lux_scale);
        if (ret < 0)
-- 
2.7.4

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