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authorAxel Lin <axel.lin@ingics.com>2012-09-22 10:40:14 +0400
committerBryan Wu <bryan.wu@canonical.com>2012-09-24 08:24:22 +0400
commite76a322af16ba7be9b303239352e140209bf3822 (patch)
tree1d811be54daa4c11b196fea6f9b8457318cd9e29 /drivers/leds/leds-lm3642.c
parent8b7cfbec052d3a0b8e8c7de24a6b5f00d340e193 (diff)
downloadlinux-e76a322af16ba7be9b303239352e140209bf3822.tar.xz
leds: lm3642: Use regmap_update_bits() in lm3642_chip_init()
Use regmap_update_bits() to replace regmap_read() + regmap_write(). With this patch, we only show the error message when regmap_update_bits() fails. Signed-off-by: Axel Lin <axel.lin@ingics.com> Acked-by: G.Shark Jeong<gshark.jeong@gmail.com> Signed-off-by: Bryan Wu <bryan.wu@canonical.com>
Diffstat (limited to 'drivers/leds/leds-lm3642.c')
-rw-r--r--drivers/leds/leds-lm3642.c15
1 files changed, 3 insertions, 12 deletions
diff --git a/drivers/leds/leds-lm3642.c b/drivers/leds/leds-lm3642.c
index 924853b7922c..3285006e9888 100644
--- a/drivers/leds/leds-lm3642.c
+++ b/drivers/leds/leds-lm3642.c
@@ -95,23 +95,14 @@ struct lm3642_chip_data {
/* chip initialize */
static int __devinit lm3642_chip_init(struct lm3642_chip_data *chip)
{
- unsigned int reg_val;
int ret;
struct lm3642_platform_data *pdata = chip->pdata;
/* set enable register */
- ret = regmap_read(chip->regmap, REG_ENABLE, &reg_val);
+ ret = regmap_update_bits(chip->regmap, REG_ENABLE, EX_PIN_ENABLE_MASK,
+ pdata->tx_pin);
if (ret < 0)
- goto out;
-
- reg_val &= (~EX_PIN_ENABLE_MASK);
- reg_val |= pdata->tx_pin;
- ret = regmap_write(chip->regmap, REG_ENABLE, reg_val);
- if (ret < 0)
- goto out;
-
-out:
- dev_err(chip->dev, "Failed to read REG_ENABLE Register\n");
+ dev_err(chip->dev, "Failed to update REG_ENABLE Register\n");
return ret;
}