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path: root/drivers/rtc/rtc-ds1343.c
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Diffstat (limited to 'drivers/rtc/rtc-ds1343.c')
-rw-r--r--drivers/rtc/rtc-ds1343.c18
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;
}