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| author | Guenter Roeck | 2011-08-26 17:12:38 +0200 |
|---|---|---|
| committer | Guenter Roeck | 2011-10-24 20:09:33 +0200 |
| commit | 866cf12a0eab65f94e40608bdd21ca8dea4d0ac2 (patch) | |
| tree | 4f419b461893f90d6e9a54f0852c3bd1a6254666 /drivers/hwmon/pmbus/max8688.c | |
| parent | hwmon: (pmbus) Add comments explaining internal driver API return values (diff) | |
| download | kernel-qcow2-linux-866cf12a0eab65f94e40608bdd21ca8dea4d0ac2.tar.gz kernel-qcow2-linux-866cf12a0eab65f94e40608bdd21ca8dea4d0ac2.tar.xz kernel-qcow2-linux-866cf12a0eab65f94e40608bdd21ca8dea4d0ac2.zip | |
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/max8688.c')
| -rw-r--r-- | drivers/hwmon/pmbus/max8688.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/hwmon/pmbus/max8688.c b/drivers/hwmon/pmbus/max8688.c index c3e72f1a3cfb..e148e2c5a756 100644 --- a/drivers/hwmon/pmbus/max8688.c +++ b/drivers/hwmon/pmbus/max8688.c @@ -182,7 +182,8 @@ static int max8688_probe(struct i2c_client *client, static int max8688_remove(struct i2c_client *client) { - return pmbus_do_remove(client); + pmbus_do_remove(client); + return 0; } static const struct i2c_device_id max8688_id[] = { |