diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2007-03-04 23:12:07 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-03-04 23:12:07 +0300 |
| commit | f5e5b734d4c9ccc1f5f68bdf545bdc4b19681d28 (patch) | |
| tree | 7b4e206c499af24d2dad42172a52a2d215b29c76 /drivers/rtc/rtc-pcf8583.c | |
| parent | c5eb2a2b65fe411dcfe13264cfa84788a75341fb (diff) | |
| download | linux-f5e5b734d4c9ccc1f5f68bdf545bdc4b19681d28.tar.xz | |
[ARM] rtc-pcf8583: don't use BCD_TO_BIN/BIN_TO_BCD
Both BCD_TO_BIN(x) and BIN_TO_BCD(x) have an unexpected side-effect -
not only do they return the value as expected, they _modify_ their
argument in the process.
Let's play it safe and avoid these macros.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/rtc/rtc-pcf8583.c')
| -rw-r--r-- | drivers/rtc/rtc-pcf8583.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/rtc/rtc-pcf8583.c b/drivers/rtc/rtc-pcf8583.c index 5875ebb8c79d..a69db6185530 100644 --- a/drivers/rtc/rtc-pcf8583.c +++ b/drivers/rtc/rtc-pcf8583.c @@ -81,11 +81,11 @@ static int pcf8583_get_datetime(struct i2c_client *client, struct rtc_time *dt) buf[4] &= 0x3f; buf[5] &= 0x1f; - dt->tm_sec = BCD_TO_BIN(buf[1]); - dt->tm_min = BCD_TO_BIN(buf[2]); - dt->tm_hour = BCD_TO_BIN(buf[3]); - dt->tm_mday = BCD_TO_BIN(buf[4]); - dt->tm_mon = BCD_TO_BIN(buf[5]); + dt->tm_sec = BCD2BIN(buf[1]); + dt->tm_min = BCD2BIN(buf[2]); + dt->tm_hour = BCD2BIN(buf[3]); + dt->tm_mday = BCD2BIN(buf[4]); + dt->tm_mon = BCD2BIN(buf[5]); } return ret == 2 ? 0 : -EIO; @@ -99,14 +99,14 @@ static int pcf8583_set_datetime(struct i2c_client *client, struct rtc_time *dt, buf[0] = 0; buf[1] = get_ctrl(client) | 0x80; buf[2] = 0; - buf[3] = BIN_TO_BCD(dt->tm_sec); - buf[4] = BIN_TO_BCD(dt->tm_min); - buf[5] = BIN_TO_BCD(dt->tm_hour); + buf[3] = BIN2BCD(dt->tm_sec); + buf[4] = BIN2BCD(dt->tm_min); + buf[5] = BIN2BCD(dt->tm_hour); if (datetoo) { len = 8; - buf[6] = BIN_TO_BCD(dt->tm_mday) | (dt->tm_year << 6); - buf[7] = BIN_TO_BCD(dt->tm_mon) | (dt->tm_wday << 5); + buf[6] = BIN2BCD(dt->tm_mday) | (dt->tm_year << 6); + buf[7] = BIN2BCD(dt->tm_mon) | (dt->tm_wday << 5); } ret = i2c_master_send(client, (char *)buf, len); |