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hwmon: (pmbus) Drop check for PMBus revision register in probe function

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Some PMBus devices do not support the PMBus revision register, so don't check
if it exists.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Reviewed-by: Robert Coulson <robert.coulson@ericsson.com>
Cc: stable.kernel.org # 2.6.39
This commit is contained in:
Guenter Roeck 2011-06-25 12:42:14 -07:00
parent b0af8dfdd6
commit 7f2c0662e5
1 changed files with 3 additions and 8 deletions
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11
drivers/hwmon/pmbus_core.c
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@ -1430,14 +1430,9 @@ int pmbus_do_probe(struct i2c_client *client, const struct i2c_device_id *id,
i2c_set_clientdata(client, data);
mutex_init(&data->update_lock);
/*
* Bail out if status register or PMBus revision register
* does not exist.
*/
if (i2c_smbus_read_byte_data(client, PMBUS_STATUS_BYTE) < 0
|| i2c_smbus_read_byte_data(client, PMBUS_REVISION) < 0) {
dev_err(&client->dev,
"Status or revision register not found\n");
/* Bail out if PMBus status register does not exist. */
if (i2c_smbus_read_byte_data(client, PMBUS_STATUS_BYTE) < 0) {
dev_err(&client->dev, "PMBus status register not found\n");
ret = -ENODEV;
goto out_data;
}