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| author | Sudip Mukherjee <sudipm.mukherjee@gmail.com> | 2015-09-16 19:32:59 +0530 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2015-10-14 07:57:14 -0700 |
| commit | 791432cfd95bea3515f8cdfaf72ec263e5d3da80 (patch) | |
| tree | 6ee42f86b2870a6956f7285aabcfd299f0597634 /drivers/hwmon/max31790.c | |
| parent | 195a4b4298a7951c845dac2b326585c66add3435 (diff) | |
| download | linux-rpi-791432cfd95bea3515f8cdfaf72ec263e5d3da80.tar.gz linux-rpi-791432cfd95bea3515f8cdfaf72ec263e5d3da80.tar.bz2 linux-rpi-791432cfd95bea3515f8cdfaf72ec263e5d3da80.zip | |
hwmon: (max31790) Fix dereference of ERR_PTR
max31790_update_device() return the error code in ERR_PTR. We were
checking if it has returned error or not but before checking we have
dereferenced it.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon/max31790.c')
| -rw-r--r-- | drivers/hwmon/max31790.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/hwmon/max31790.c b/drivers/hwmon/max31790.c index f1296680833a..69c0ac80a946 100644 --- a/drivers/hwmon/max31790.c +++ b/drivers/hwmon/max31790.c @@ -174,12 +174,12 @@ static ssize_t get_fan(struct device *dev, { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct max31790_data *data = max31790_update_device(dev); - int sr = get_tach_period(data->fan_dynamics[attr->index]); - int rpm; + int sr, rpm; if (IS_ERR(data)) return PTR_ERR(data); + sr = get_tach_period(data->fan_dynamics[attr->index]); rpm = RPM_FROM_REG(data->tach[attr->index], sr); return sprintf(buf, "%d\n", rpm); @@ -190,12 +190,12 @@ static ssize_t get_fan_target(struct device *dev, { struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr); struct max31790_data *data = max31790_update_device(dev); - int sr = get_tach_period(data->fan_dynamics[attr->index]); - int rpm; + int sr, rpm; if (IS_ERR(data)) return PTR_ERR(data); + sr = get_tach_period(data->fan_dynamics[attr->index]); rpm = RPM_FROM_REG(data->target_count[attr->index], sr); return sprintf(buf, "%d\n", rpm); |