luck/tmp_suning_uos_patched
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Merge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging

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* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c/mips: Fix error return codes from Sibyte i2c bus driver
  i2c: Fix probability check
This commit is contained in:
Linus Torvalds 2010-07-11 13:32:55 -07:00
commit 80519bc77b
2 changed files with 5 additions and 6 deletions
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4
drivers/i2c/busses/i2c-sibyte.c
View File

@ -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)

7
drivers/i2c/i2c-core.c
View File

@ -1428,13 +1428,12 @@ static int i2c_detect(struct i2c_adapter *adapter, struct i2c_driver *driver)
if (!(adapter->class & driver->class))
goto exit_free;
/* Stop here if we can't use SMBUS_QUICK */
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_QUICK)) {
/* Stop here if the bus doesn't support probing */
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_READ_BYTE)) {
if (address_list[0] == I2C_CLIENT_END)
goto exit_free;
dev_warn(&adapter->dev, "SMBus Quick command not supported, "
"can't probe for chips\n");
dev_warn(&adapter->dev, "Probing not supported\n");
err = -EOPNOTSUPP;
goto exit_free;
}