diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-bfin-twi.c | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c index 6311039..67224a4 100644 --- a/drivers/i2c/busses/i2c-bfin-twi.c +++ b/drivers/i2c/busses/i2c-bfin-twi.c @@ -44,7 +44,6 @@ #define TWI_I2C_MODE_COMBINED 0x04 struct bfin_twi_iface { - struct mutex twi_lock; int irq; spinlock_t lock; char read_write; @@ -228,12 +227,8 @@ static int bfin_twi_master_xfer(struct i2c_adapter *adap, if (!(bfin_read_TWI_CONTROL() & TWI_ENA)) return -ENXIO; - mutex_lock(&iface->twi_lock); - while (bfin_read_TWI_MASTER_STAT() & BUSBUSY) { - mutex_unlock(&iface->twi_lock); yield(); - mutex_lock(&iface->twi_lock); } ret = 0; @@ -310,9 +305,6 @@ static int bfin_twi_master_xfer(struct i2c_adapter *adap, break; } - /* Release mutex */ - mutex_unlock(&iface->twi_lock); - return ret; } @@ -330,12 +322,8 @@ int bfin_twi_smbus_xfer(struct i2c_adapter *adap, u16 addr, if (!(bfin_read_TWI_CONTROL() & TWI_ENA)) return -ENXIO; - mutex_lock(&iface->twi_lock); - while (bfin_read_TWI_MASTER_STAT() & BUSBUSY) { - mutex_unlock(&iface->twi_lock); yield(); - mutex_lock(&iface->twi_lock); } iface->writeNum = 0; @@ -502,9 +490,6 @@ int bfin_twi_smbus_xfer(struct i2c_adapter *adap, u16 addr, rc = (iface->result >= 0) ? 0 : -1; - /* Release mutex */ - mutex_unlock(&iface->twi_lock); - return rc; } @@ -555,7 +540,6 @@ static int i2c_bfin_twi_probe(struct platform_device *dev) struct i2c_adapter *p_adap; int rc; - mutex_init(&(iface->twi_lock)); spin_lock_init(&(iface->lock)); init_completion(&(iface->complete)); iface->irq = IRQ_TWI; |