diff options
| author |   Lucas Magasweran <lucas.magasweran@ieee.org> | 2018-05-08 04:43:33 -0700 |
|---|---|---|
| committer |   Guenter Roeck <linux@roeck-us.net> | 2018-05-21 07:51:59 -0700 |
| commit | 59df4f4e8e0b9a0abb14ad5128d36d844c3e2689 (patch) | |
| tree | b58746d6b637b1a1100dbe5e15006317dfb54bf1 /drivers/hwmon | |
| parent | hwmon: (fschmd) fix typo 'can by' to 'can be' (diff) | |
| download | linux-dev-59df4f4e8e0b9a0abb14ad5128d36d844c3e2689.tar.xz linux-dev-59df4f4e8e0b9a0abb14ad5128d36d844c3e2689.zip | |
hwmon: (core) check parent dev != NULL when chip != NULL
hwmon_device_register_with_info() registration API requires a
non-NULL parent device when chip is non-NULL.
This commit adds a check and documents this requirement.
Signed-off-by: Lucas Magasweran <lucas.magasweran@ieee.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/hwmon.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c index 32083e452cde..e88c01961948 100644 --- a/drivers/hwmon/hwmon.c +++ b/drivers/hwmon/hwmon.c @@ -698,6 +698,9 @@ hwmon_device_register_with_info(struct device *dev, const char *name, if (chip && (!chip->ops || !chip->ops->is_visible || !chip->info)) return ERR_PTR(-EINVAL); + if (chip && !dev) + return ERR_PTR(-EINVAL); + return __hwmon_device_register(dev, name, drvdata, chip, extra_groups); } EXPORT_SYMBOL_GPL(hwmon_device_register_with_info); |