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| author | Miquel Raynal <miquel.raynal@free-electrons.com> | 2017-10-16 14:12:10 +0200 |
|---|---|---|
| committer | Guenter Roeck <linux@roeck-us.net> | 2017-10-29 18:36:03 -0700 |
| commit | 534e28d876926669bba0dc31519a0b0026f3dfcb (patch) | |
| tree | 9af4f9eed950d984347ac578aa0ce359c7f71318 /drivers/hwmon | |
| parent | 9de382fddf18f673436f1058d822e1236a0b4c2a (diff) | |
| download | linux-534e28d876926669bba0dc31519a0b0026f3dfcb.tar.gz linux-534e28d876926669bba0dc31519a0b0026f3dfcb.tar.bz2 linux-534e28d876926669bba0dc31519a0b0026f3dfcb.zip | |
hwmon: (gpio-fan) Fix null pointer dereference at probe
A previous commit changed the argument list of gpio_fan_get_of_data(),
removing the "struct *dev" argument and retrieving it instead from the
gpio_fan_data structure. The "dev" entry of gpio_fan_data was then
dereferenced to access the of_node field, leading to a kernel panic
during the probe as the "dev" entry of the gpio_fan_data structure was
not filled yet.
Fix this by setting fan_data->dev before calling gpio_fan_get_of_data().
Fixes: 5859d8d30737 ("hwmon: (gpio-fan) Get rid of platform data struct")
Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/gpio-fan.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwmon/gpio-fan.c b/drivers/hwmon/gpio-fan.c index 43b697380987..5c9a52599cf6 100644 --- a/drivers/hwmon/gpio-fan.c +++ b/drivers/hwmon/gpio-fan.c @@ -510,11 +510,11 @@ static int gpio_fan_probe(struct platform_device *pdev) if (!fan_data) return -ENOMEM; + fan_data->dev = dev; err = gpio_fan_get_of_data(fan_data); if (err) return err; - fan_data->dev = dev; platform_set_drvdata(pdev, fan_data); mutex_init(&fan_data->lock); |