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platform/x86: adv_swbutton: Check ACPI_HANDLE() against NULL

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[ Upstream commit e7a9a6ea40 ]

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
platform/x86 adv_swbutton driver.

Fixes: 3d904005f6 ("platform/x86: add support for Advantech software defined button")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/5115425.31r3eYUQgx@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Rafael J. Wysocki
2026-06-01 17:43:14 +02:00
committed by Greg Kroah-Hartman
parent 566f42fb67
commit 32ba2ce2b1
1 changed files with 5 additions and 1 deletions
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drivers/platform/x86/adv_swbutton.c
+5 -1
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@@ -48,10 +48,14 @@ static int adv_swbutton_probe(struct platform_device *device)
{
struct adv_swbutton *button;
struct input_dev *input;
acpi_handle handle = ACPI_HANDLE(&device->dev);
acpi_handle handle;
acpi_status status;
int error;
handle = ACPI_HANDLE(&device->dev);
if (!handle)
return -ENODEV;
button = devm_kzalloc(&device->dev, sizeof(*button), GFP_KERNEL);
if (!button)
return -ENOMEM;