From f06035ab324e52a845079c2e5f2380fa3cebde9b Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 11 May 2026 21:56:14 +0200 Subject: [PATCH] hwmon: (asus_atk0110) Check ACPI_COMPANION() against NULL Every platform driver can be forced to match a device that doesn't match its list of device IDs because of device_match_driver_override(), so platform drivers that rely on the existence of a device's ACPI companion object need to verify its presence. Accordingly, add a requisite ACPI_HANDLE() check against NULL to the asus_atk0110 hwmon driver. Fixes: ee1752590733 ("hwmon: (asus_atk0110) Convert ACPI driver to a platform one") Signed-off-by: Rafael J. Wysocki Link: https://lore.kernel.org/r/2261594.irdbgypaU6@rafael.j.wysocki Signed-off-by: Guenter Roeck --- drivers/hwmon/asus_atk0110.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/asus_atk0110.c b/drivers/hwmon/asus_atk0110.c index 5688ff5f7c28..109318b0434d 100644 --- a/drivers/hwmon/asus_atk0110.c +++ b/drivers/hwmon/asus_atk0110.c @@ -1273,15 +1273,20 @@ static int atk_probe(struct platform_device *pdev) struct acpi_buffer buf; union acpi_object *obj; struct atk_data *data; + acpi_handle handle; dev_dbg(&pdev->dev, "adding...\n"); + handle = ACPI_HANDLE(&pdev->dev); + if (!handle) + return -ENODEV; + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); if (!data) return -ENOMEM; data->dev = &pdev->dev; - data->atk_handle = ACPI_HANDLE(&pdev->dev); + data->atk_handle = handle; INIT_LIST_HEAD(&data->sensor_list); data->disable_ec = false;