Unverified Commit f15b0a30 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki Committed by Ilpo Järvinen
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platform/x86: panasonic-laptop: 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_COMPANION() check against NULL to the
platform/x86 panasonic-laptop driver.

Fixes: de683724 ("platform/x86: panasonic-laptop: Convert ACPI driver to a platform one")
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/3353471.5fSG56mABF@rafael.j.wysocki


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
parent 7e169326

drivers/platform/x86/panasonic-laptop.c

+5 −1
Original line number Diff line number Diff line
@@ -981,11 +981,15 @@ static int acpi_pcc_hotkey_resume(struct device *dev) 


static int acpi_pcc_hotkey_probe(struct platform_device *pdev)

{

	struct acpi_device *device = ACPI_COMPANION(&pdev->dev);

	struct backlight_properties props;

	struct acpi_device *device;

	struct pcc_acpi *pcc;

	int num_sifr, result;



	device = ACPI_COMPANION(&pdev->dev);

	if (!device)

		return -ENODEV;



	num_sifr = acpi_pcc_get_sqty(device);



	/*