diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2021-04-06 21:11:59 +0800 |
|---|---|---|
| committer | Pavel Machek <pavel@ucw.cz> | 2021-05-10 11:58:54 +0200 |
| commit | ee522bcf026ec82ada793979c3a906274430595a (patch) | |
| tree | c2bd547f01c85e754494e2aedc77ae2416ba3683 /drivers/leds/leds-tlc591xx.c | |
| parent | 6efb943b8616ec53a5e444193dccf1af9ad627b5 (diff) | |
leds: tlc591xx: fix return value check in tlc591xx_probe()
After device_get_match_data(), tlc591xx is not checked, add
check for it and also check np after dev_of_node.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Diffstat (limited to 'drivers/leds/leds-tlc591xx.c')
| -rw-r--r-- | drivers/leds/leds-tlc591xx.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/leds/leds-tlc591xx.c b/drivers/leds/leds-tlc591xx.c index 5b9dfdf743ec..cb7bd1353f9f 100644 --- a/drivers/leds/leds-tlc591xx.c +++ b/drivers/leds/leds-tlc591xx.c @@ -148,16 +148,20 @@ static int tlc591xx_probe(struct i2c_client *client, const struct i2c_device_id *id) { - struct device_node *np = dev_of_node(&client->dev), *child; + struct device_node *np, *child; struct device *dev = &client->dev; const struct tlc591xx *tlc591xx; struct tlc591xx_priv *priv; int err, count, reg; - tlc591xx = device_get_match_data(dev); + np = dev_of_node(dev); if (!np) return -ENODEV; + tlc591xx = device_get_match_data(dev); + if (!tlc591xx) + return -ENODEV; + count = of_get_available_child_count(np); if (!count || count > tlc591xx->max_leds) return -EINVAL; |