diff options
| author | Guenter Roeck <guenter.roeck@ericsson.com> | 2011-08-26 15:12:38 (GMT) |
|---|---|---|
| committer | Guenter Roeck <guenter.roeck@ericsson.com> | 2011-10-24 18:09:33 (GMT) |
| commit | 866cf12a0eab65f94e40608bdd21ca8dea4d0ac2 (patch) | |
| tree | 4f419b461893f90d6e9a54f0852c3bd1a6254666 /drivers/hwmon/pmbus/pmbus_core.c | |
| parent | 20fcfe172190704918969695a16cf621e2f4ce25 (diff) | |
| download | linux-866cf12a0eab65f94e40608bdd21ca8dea4d0ac2.tar.xz | |
hwmon: (pmbus) Don't return errors from driver remove functions
Driver remove functions have an error return value, but rarely return an error
in practice. If a driver does return an error from its remove function, the
driver won't be unloaded and is expected to stay alive.
pmbus_do_remove() is defined as returning an int, but always returns 0 (no
error). Calling code passes that return value on to high level driver
remove functions, but does not evaluate it and removes driver data even if
pmbus_do_remove() returned an error (which it in practice never does). Even if
this code could never cause a real problem, it is nevertheless conceptually
wrong.
To reduce confusion and simplify the code, change pmbus_do_remove() to be a void
function, and have PMBus client drivers always return zero in their driver
remove functions.
Reported-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/hwmon/pmbus/pmbus_core.c')
| -rw-r--r-- | drivers/hwmon/pmbus/pmbus_core.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c index 397fc59..36f2870 100644 --- a/drivers/hwmon/pmbus/pmbus_core.c +++ b/drivers/hwmon/pmbus/pmbus_core.c @@ -1764,7 +1764,7 @@ out_data: } EXPORT_SYMBOL_GPL(pmbus_do_probe); -int pmbus_do_remove(struct i2c_client *client) +void pmbus_do_remove(struct i2c_client *client) { struct pmbus_data *data = i2c_get_clientdata(client); hwmon_device_unregister(data->hwmon_dev); @@ -1774,7 +1774,6 @@ int pmbus_do_remove(struct i2c_client *client) kfree(data->booleans); kfree(data->sensors); kfree(data); - return 0; } EXPORT_SYMBOL_GPL(pmbus_do_remove); |