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i2c/mips: Fix error return codes from Sibyte i2c bus driver 

Sibyte i2c bus driver returns non-descriptive error values.
Update to return error values as defined in Documentation/i2c/fault-codes.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
This commit is contained in:
Guenter Roeck 2010-07-10 09:42:47 +02:00 committed by Jean Delvare
parent 827900c556
commit 102b59c6d6
1 changed files with 2 additions and 2 deletions
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4
drivers/i2c/busses/i2c-sibyte.c
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@ -94,7 +94,7 @@ static int smbus_xfer(struct i2c_adapter *i2c_adap, u16 addr,
}
break;
default:
return -1; /* XXXKW better error code? */
return -EOPNOTSUPP;
}
while (csr_in32(SMB_CSR(adap, R_SMB_STATUS)) & M_SMB_BUSY)
@ -104,7 +104,7 @@ static int smbus_xfer(struct i2c_adapter *i2c_adap, u16 addr,
if (error & M_SMB_ERROR) {
/* Clear error bit by writing a 1 */
csr_out32(M_SMB_ERROR, SMB_CSR(adap, R_SMB_STATUS));
return -1; /* XXXKW better error code? */
return (error & M_SMB_ERROR_TYPE) ? -EIO : -ENXIO;
}
if (data_bytes == 1)