diff options
| -rw-r--r-- | drivers/rtc/rtc-ds1343.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c index ec8d1e82d7ac..28f9463322d0 100644 --- a/drivers/rtc/rtc-ds1343.c +++ b/drivers/rtc/rtc-ds1343.c @@ -108,20 +108,18 @@ static ssize_t ds1343_store_glitchfilter(struct device *dev, const char *buf, size_t count) { struct ds1343_priv *priv = dev_get_drvdata(dev->parent); - int data; - - regmap_read(priv->map, DS1343_CONTROL_REG, &data); + int data = 0; + int res; if (strncmp(buf, "enabled", 7) == 0) - data |= DS1343_EGFIL; - - else if (strncmp(buf, "disabled", 8) == 0) - data &= ~(DS1343_EGFIL); - - else + data = DS1343_EGFIL; + else if (strncmp(buf, "disabled", 8)) return -EINVAL; - regmap_write(priv->map, DS1343_CONTROL_REG, data); + res = regmap_update_bits(priv->map, DS1343_CONTROL_REG, + DS1343_EGFIL, data); + if (res) + return res; return count; } |