[PATCH v8 2/8] iio: dac: ad5686: missing NULL check on match data
Rodrigo Alencar via B4 Relay <[email protected]>
| Newsgroups | org.kernel.vger.linux-hardening,org.kernel.feeds.b4-sent,org.kernel.vger.linux-devicetree,org.kernel.vger.linux-iio,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
From: Rodrigo Alencar <[email protected]> Verify that chip_info pointer is not NULL. If a user binds the driver using driver_override via sysfs with a device name not present in the id_table or of_match_table, match data will be NULL. Fixes: 0eb1728461a1 ("iio: dac: ad5686: drop enum id") Reported-by: [email protected] Closes: https://lore.kernel.org/all/[email protected]/ Signed-off-by: Rodrigo Alencar <[email protected]> --- drivers/iio/dac/ad5686.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c index 713fe71ad1e7..d34250647aa4 100644 --- a/drivers/iio/dac/ad5686.c +++ b/drivers/iio/dac/ad5686.c @@ -479,6 +479,9 @@ int ad5686_probe(struct device *dev, struct iio_dev *indio_dev; int ret, i; + if (!chip_info) + return -ENODEV; + indio_dev = devm_iio_device_alloc(dev, sizeof(*st)); if (indio_dev == NULL) return -ENOMEM; -- 2.43.0