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Code Issues Releases Wiki Activity

leds: tlc591xx: fix return value check in tlc591xx_probe()

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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>
This commit is contained in:
Yang Yingliang 2021-04-06 21:11:59 +08:00 committed by Pavel Machek
parent 6efb943b86
commit ee522bcf02
1 changed files with 6 additions and 2 deletions
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8
drivers/leds/leds-tlc591xx.c
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@ -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;