diff options
| author | Kangjie Lu <kjlu@umn.edu> | 2019-03-09 00:04:11 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-04 09:20:22 +0200 |
| commit | 2663959af22c485a5ee662f8189075912e3280b3 (patch) | |
| tree | 0f1ad09cb889b589987b4694ff0c239190756762 /drivers/leds | |
| parent | 13a6a6dd3c11cc1b08a68561d637269a6e96514c (diff) | |
leds: pca9532: fix a potential NULL pointer dereference
[ Upstream commit 0aab8e4df4702b31314a27ec4b0631dfad0fae0a ]
In case of_match_device cannot find a match, return -EINVAL to avoid
NULL pointer dereference.
Fixes: fa4191a609f2 ("leds: pca9532: Add device tree support")
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/leds-pca9532.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/leds/leds-pca9532.c b/drivers/leds/leds-pca9532.c index 7fea18b0c15d..7cb4d685a1f1 100644 --- a/drivers/leds/leds-pca9532.c +++ b/drivers/leds/leds-pca9532.c @@ -513,6 +513,7 @@ static int pca9532_probe(struct i2c_client *client, const struct i2c_device_id *id) { int devid; + const struct of_device_id *of_id; struct pca9532_data *data = i2c_get_clientdata(client); struct pca9532_platform_data *pca9532_pdata = dev_get_platdata(&client->dev); @@ -528,8 +529,11 @@ static int pca9532_probe(struct i2c_client *client, dev_err(&client->dev, "no platform data\n"); return -EINVAL; } - devid = (int)(uintptr_t)of_match_device( - of_pca9532_leds_match, &client->dev)->data; + of_id = of_match_device(of_pca9532_leds_match, + &client->dev); + if (unlikely(!of_id)) + return -EINVAL; + devid = (int)(uintptr_t) of_id->data; } else { devid = id->driver_data; } |