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hwmon: (nzxt-kraken3) Bail out for unsupported device variants

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Dan Carpenter reports:

Commit cbeb479ff4 ("hwmon: (nzxt-kraken3) Decouple device names
from kinds") from Apr 28, 2024 (linux-next), leads to the following
Smatch static checker warning:

	drivers/hwmon/nzxt-kraken3.c:957 kraken3_probe()
	error: uninitialized symbol 'device_name'.

Indeed, 'device_name' will be uninitizalized if an unknown product is
encountered. In practice this should not matter because the driver
should not instantiate on unknown products, but lets play safe and
bail out if that happens.

Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/linux-hwmon/b1738c50-db42-40f0-a899-9c027c131ffb@moroto.mountain/
Cc: Jonas Malaco <jonas@protocubo.io>
Cc: Aleksa Savic <savicaleksa83@gmail.com>
Fixes: cbeb479ff4 ("hwmon: (nzxt-kraken3) Decouple device names from kinds")
Acked-by: Jonas Malaco <jonas@protocubo.io>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck 2024-05-12 09:07:01 -07:00
parent c82337843d
commit 5fbf8734fb
1 changed files with 2 additions and 1 deletions
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3
drivers/hwmon/nzxt-kraken3.c
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@ -928,7 +928,8 @@ static int kraken3_probe(struct hid_device *hdev, const struct hid_device_id *id
device_name = "kraken2023elite";
break;
default:
break;
ret = -ENODEV;
goto fail_and_close;
}
priv->buffer = devm_kzalloc(&hdev->dev, MAX_REPORT_LENGTH, GFP_KERNEL);