2012년 09월 22일 15:40, Axel Lin 쓴 글:
Use regmap_update_bits() to replace regmap_read() + regmap_write().
With this patch, we only show the error message when regmap_update_bits()
fails.
Looks good..You're right. Thank you Alex.
Signed-off-by: Axel Lin <axel.lin@xxxxxxxxxx>
Acked-by: G.Shark Jeong<gshark.jeong@xxxxxxxxx>
---
drivers/leds/leds-lm3642.c | 15 +++------------
1 file changed, 3 insertions(+), 12 deletions(-)
diff --git a/drivers/leds/leds-lm3642.c b/drivers/leds/leds-lm3642.c
index 924853b..3285006 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, ®_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;
}
--
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