diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-sis96x.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-sis96x.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/i2c/busses/i2c-sis96x.c b/drivers/i2c/busses/i2c-sis96x.c index dc235bb8e24..29757b2e11d 100644 --- a/drivers/i2c/busses/i2c-sis96x.c +++ b/drivers/i2c/busses/i2c-sis96x.c @@ -111,7 +111,7 @@ static int sis96x_transaction(int size) /* check it again */ if (((temp = sis96x_read(SMB_CNT)) & 0x03) != 0x00) { dev_dbg(&sis96x_adapter.dev, "Failed (0x%02x)\n", temp); - return -1; + return -EBUSY; } else { dev_dbg(&sis96x_adapter.dev, "Successful\n"); } @@ -136,19 +136,19 @@ static int sis96x_transaction(int size) /* If the SMBus is still busy, we give up */ if (timeout >= MAX_TIMEOUT) { dev_dbg(&sis96x_adapter.dev, "SMBus Timeout! (0x%02x)\n", temp); - result = -1; + result = -ETIMEDOUT; } /* device error - probably missing ACK */ if (temp & 0x02) { dev_dbg(&sis96x_adapter.dev, "Failed bus transaction!\n"); - result = -1; + result = -ENXIO; } /* bus collision */ if (temp & 0x04) { dev_dbg(&sis96x_adapter.dev, "Bus collision!\n"); - result = -1; + result = -EIO; } /* Finish up by resetting the bus */ @@ -161,11 +161,12 @@ static int sis96x_transaction(int size) return result; } -/* Return -1 on error. */ +/* Return negative errno on error. */ static s32 sis96x_access(struct i2c_adapter * adap, u16 addr, unsigned short flags, char read_write, u8 command, int size, union i2c_smbus_data * data) { + int status; switch (size) { case I2C_SMBUS_QUICK: @@ -203,17 +204,17 @@ static s32 sis96x_access(struct i2c_adapter * adap, u16 addr, case I2C_SMBUS_BLOCK_DATA: /* TO DO: */ dev_info(&adap->dev, "SMBus block not implemented!\n"); - return -1; + return -EOPNOTSUPP; break; default: - dev_info(&adap->dev, "Unsupported I2C size\n"); - return -1; - break; + dev_info(&adap->dev, "Unsupported SMBus operation\n"); + return -EOPNOTSUPP; } - if (sis96x_transaction(size)) - return -1; + status = sis96x_transaction(size); + if (status) + return status; if ((size != SIS96x_PROC_CALL) && ((read_write == I2C_SMBUS_WRITE) || (size == SIS96x_QUICK))) |