diff options
Diffstat (limited to 'drivers/i2c/chips/m41t00.c')
| -rw-r--r-- | drivers/i2c/chips/m41t00.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/i2c/chips/m41t00.c b/drivers/i2c/chips/m41t00.c index 2dc3d48375f..b5aabe7cf79 100644 --- a/drivers/i2c/chips/m41t00.c +++ b/drivers/i2c/chips/m41t00.c @@ -24,13 +24,14 @@ #include <linux/i2c.h> #include <linux/rtc.h> #include <linux/bcd.h> +#include <linux/mutex.h> #include <asm/time.h> #include <asm/rtc.h> #define M41T00_DRV_NAME "m41t00" -static DECLARE_MUTEX(m41t00_mutex); +static DEFINE_MUTEX(m41t00_mutex); static struct i2c_driver m41t00_driver; static struct i2c_client *save_client; @@ -54,7 +55,7 @@ m41t00_get_rtc_time(void) sec = min = hour = day = mon = year = 0; sec1 = min1 = hour1 = day1 = mon1 = year1 = 0; - down(&m41t00_mutex); + mutex_lock(&m41t00_mutex); do { if (((sec = i2c_smbus_read_byte_data(save_client, 0)) >= 0) && ((min = i2c_smbus_read_byte_data(save_client, 1)) @@ -80,7 +81,7 @@ m41t00_get_rtc_time(void) mon1 = mon; year1 = year; } while (--limit > 0); - up(&m41t00_mutex); + mutex_unlock(&m41t00_mutex); if (limit == 0) { dev_warn(&save_client->dev, @@ -125,7 +126,7 @@ m41t00_set_tlet(ulong arg) BIN_TO_BCD(tm.tm_mday); BIN_TO_BCD(tm.tm_year); - down(&m41t00_mutex); + mutex_lock(&m41t00_mutex); if ((i2c_smbus_write_byte_data(save_client, 0, tm.tm_sec & 0x7f) < 0) || (i2c_smbus_write_byte_data(save_client, 1, tm.tm_min & 0x7f) < 0) @@ -140,7 +141,7 @@ m41t00_set_tlet(ulong arg) dev_warn(&save_client->dev,"m41t00: can't write to rtc chip\n"); - up(&m41t00_mutex); + mutex_unlock(&m41t00_mutex); return; } |