rtc: pcf2123: Add missing error code assignment before test

[karo-tx-linux.git] / drivers / rtc / rtc-pcf2123.c

diff --git a/drivers/rtc/rtc-pcf2123.c b/drivers/rtc/rtc-pcf2123.c
index f22e060709e547528b29b747f796b45c445d23fa..8895f77726e8da5444afcd602dceff8f25a9b3fd 100644 (file)
--- a/drivers/rtc/rtc-pcf2123.c
+++ b/drivers/rtc/rtc-pcf2123.c
@@ -96,7 +96,7 @@
 #define CD_TMR_TE              BIT(3)  /* Countdown timer enable */
 
 /* PCF2123_REG_OFFSET BITS */
-#define OFFSET_SIGN_BIT                BIT(6)  /* 2's complement sign bit */
+#define OFFSET_SIGN_BIT                6       /* 2's complement sign bit */
 #define OFFSET_COARSE          BIT(7)  /* Coarse mode offset */
 #define OFFSET_STEP            (2170)  /* Offset step in parts per billion */
 
@@ -182,7 +182,8 @@ static ssize_t pcf2123_show(struct device *dev, struct device_attribute *attr,
 }
 
 static ssize_t pcf2123_store(struct device *dev, struct device_attribute *attr,
-                            const char *buffer, size_t count) {
+                            const char *buffer, size_t count)
+{
        struct pcf2123_sysfs_reg *r;
        unsigned long reg;
        unsigned long val;
@@ -199,7 +200,7 @@ static ssize_t pcf2123_store(struct device *dev, struct device_attribute *attr,
        if (ret)
                return ret;
 
-       pcf2123_write_reg(dev, reg, val);
+       ret = pcf2123_write_reg(dev, reg, val);
        if (ret < 0)
                return -EIO;
        return count;
@@ -217,7 +218,7 @@ static int pcf2123_read_offset(struct device *dev, long *offset)
        if (reg & OFFSET_COARSE)
                reg <<= 1; /* multiply by 2 and sign extend */
        else
-               reg |= (reg & OFFSET_SIGN_BIT) << 1; /* sign extend only */
+               reg = sign_extend32(reg, OFFSET_SIGN_BIT);
 
        *offset = ((long)reg) * OFFSET_STEP;