diff options
Diffstat (limited to 'drivers/rtc/rtc-cmos.c')
| -rw-r--r-- | drivers/rtc/rtc-cmos.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c index 7d99cd2c37a0..35dca2accbb8 100644 --- a/drivers/rtc/rtc-cmos.c +++ b/drivers/rtc/rtc-cmos.c @@ -643,11 +643,10 @@ static int cmos_nvram_read(void *priv, unsigned int off, void *val, size_t count) { unsigned char *buf = val; - int retval; off += NVRAM_OFFSET; spin_lock_irq(&rtc_lock); - for (retval = 0; count; count--, off++, retval++) { + for (; count; count--, off++) { if (off < 128) *buf++ = CMOS_READ(off); else if (can_bank2) @@ -657,7 +656,7 @@ static int cmos_nvram_read(void *priv, unsigned int off, void *val, } spin_unlock_irq(&rtc_lock); - return retval; + return count ? -EIO : 0; } static int cmos_nvram_write(void *priv, unsigned int off, void *val, @@ -665,7 +664,6 @@ static int cmos_nvram_write(void *priv, unsigned int off, void *val, { struct cmos_rtc *cmos = priv; unsigned char *buf = val; - int retval; /* NOTE: on at least PCs and Ataris, the boot firmware uses a * checksum on part of the NVRAM data. That's currently ignored @@ -674,7 +672,7 @@ static int cmos_nvram_write(void *priv, unsigned int off, void *val, */ off += NVRAM_OFFSET; spin_lock_irq(&rtc_lock); - for (retval = 0; count; count--, off++, retval++) { + for (; count; count--, off++) { /* don't trash RTC registers */ if (off == cmos->day_alrm || off == cmos->mon_alrm @@ -689,7 +687,7 @@ static int cmos_nvram_write(void *priv, unsigned int off, void *val, } spin_unlock_irq(&rtc_lock); - return retval; + return count ? -EIO : 0; } /*----------------------------------------------------------------*/ |