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platform/x86: asus-laptop: Check ACPI_COMPANION() against NULL

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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_COMPANION() check against NULL to the
platform/x86 asus-laptop driver.

Fixes: ba19eb1017 ("platform/x86: asus-laptop: Convert ACPI driver to a platform one")
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/5083741.GXAFRqVoOG@rafael.j.wysocki
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
This commit is contained in:
Rafael J. Wysocki 2026-05-12 16:04:23 +02:00 committed by Ilpo Järvinen
parent dc334b9bf9
commit 08f29dc34d
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GPG Key ID: 59AC4F6153E5CE31
1 changed files with 5 additions and 1 deletions
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6
drivers/platform/x86/asus-laptop.c
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@ -1826,10 +1826,14 @@ static bool asus_device_present;
static int asus_acpi_probe(struct platform_device *pdev)
{
struct acpi_device *device = ACPI_COMPANION(&pdev->dev);
struct acpi_device *device;
struct asus_laptop *asus;
int result;
device = ACPI_COMPANION(&pdev->dev);
if (!device)
return -ENODEV;
pr_notice("Asus Laptop Support version %s\n",
ASUS_LAPTOP_VERSION);
asus = kzalloc_obj(struct asus_laptop);