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platform/x86: lg-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 lg-laptop driver.

Fixes: 2d9cb20610 ("platform/x86: lg-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/3706551.iIbC2pHGDl@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 16:12:27 +02:00 committed by Ilpo Järvinen
parent 922952f2bb
commit 7e169326c2
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GPG Key ID: 59AC4F6153E5CE31
1 changed files with 7 additions and 2 deletions
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9
drivers/platform/x86/lg-laptop.c
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@ -761,12 +761,11 @@ static void lg_laptop_remove_address_space_handler(void *data)
static int acpi_probe(struct platform_device *pdev)
{
struct acpi_device *device = ACPI_COMPANION(&pdev->dev);
struct platform_device_info pdev_info = {
.fwnode = acpi_fwnode_handle(device),
.name = PLATFORM_NAME,
.id = PLATFORM_DEVID_NONE,
};
struct acpi_device *device;
acpi_status status;
int ret;
const char *product;
@ -775,6 +774,12 @@ static int acpi_probe(struct platform_device *pdev)
if (pf_device)
return 0;
device = ACPI_COMPANION(&pdev->dev);
if (!device)
return -ENODEV;
pdev_info.fwnode = acpi_fwnode_handle(device),
status = acpi_install_address_space_handler(device->handle, LG_ADDRESS_SPACE_ID,
&lg_laptop_address_space_handler,
NULL, &pdev->dev);