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ACPI: video: Drop backlight parent device reference later

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Update acpi_video_dev_register_backlight() to put the parent device after
registering the backlight class device under it instead of attempting to
register the backlight class device under a parent that (theoretically)
may be gone at that point.

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/10885673.nUPlyArG6x@rafael.j.wysocki
This commit is contained in:
Rafael J. Wysocki
2026-07-16 16:05:04 +02:00
parent 9d4f0ecb87
commit 2e8c155fe8
1 changed files with 2 additions and 3 deletions
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5
drivers/acpi/acpi_video.c
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@@ -1719,10 +1719,8 @@ static void acpi_video_dev_register_backlight(struct acpi_video_device *device)
if (ACPI_SUCCESS(acpi_get_parent(device->dev->handle, &acpi_parent))) {
pdev = acpi_get_pci_dev(acpi_parent);
if (pdev) {
if (pdev)
parent = &pdev->dev;
pci_dev_put(pdev);
}
}
memset(&props, 0, sizeof(struct backlight_properties));
@@ -1734,6 +1732,7 @@ static void acpi_video_dev_register_backlight(struct acpi_video_device *device)
device,
&acpi_backlight_ops,
&props);
put_device(parent);
kfree(name);
if (IS_ERR(device->backlight)) {
device->backlight = NULL;