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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2016-10-12 09:24:52 +0300 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2016-10-17 10:16:20 -0700 |
| commit | 94cdc5608b5561aeda80edda9c9223608a1da6fc (patch) | |
| tree | d900738ae22626517919cd55b3b127d6c331a991 /drivers/hwmon | |
| parent | 667f4bab81ea8357d260aa14bb6fb1a4834248d5 (diff) | |
| download | linux-94cdc5608b5561aeda80edda9c9223608a1da6fc.tar.gz linux-94cdc5608b5561aeda80edda9c9223608a1da6fc.tar.bz2 linux-94cdc5608b5561aeda80edda9c9223608a1da6fc.zip | |
hwmon: (max31790) potential ERR_PTR dereference
We should only dereference "data" after we check if it is an error
pointer.
Fixes: 54187ff9d766 ('hwmon: (max31790) Convert to use new hwmon registration API')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/max31790.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/hwmon/max31790.c b/drivers/hwmon/max31790.c index bef84e085973..c1b9275978f9 100644 --- a/drivers/hwmon/max31790.c +++ b/drivers/hwmon/max31790.c @@ -268,11 +268,13 @@ static int max31790_read_pwm(struct device *dev, u32 attr, int channel, long *val) { struct max31790_data *data = max31790_update_device(dev); - u8 fan_config = data->fan_config[channel]; + u8 fan_config; if (IS_ERR(data)) return PTR_ERR(data); + fan_config = data->fan_config[channel]; + switch (attr) { case hwmon_pwm_input: *val = data->pwm[channel] >> 8; |