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Commit a75fe0d7 authored by Corentin Chary's avatar Corentin Chary Committed by Matthew Garrett
Browse files

asus-wmi: handle "unknown status" bit 



Signed-off-by: default avatarCorentin Chary <corentincj@iksaif.net>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent a7ce3f04

drivers/platform/x86/asus-wmi.c

+6 −0
Original line number Diff line number Diff line
@@ -92,6 +92,7 @@ MODULE_LICENSE("GPL"); 


/* DSTS masks */

#define ASUS_WMI_DSTS_STATUS_BIT	0x00000001

#define ASUS_WMI_DSTS_UNKNOWN_BIT	0x00000002

#define ASUS_WMI_DSTS_PRESENCE_BIT	0x00010000

#define ASUS_WMI_DSTS_BRIGHTNESS_MASK	0x000000FF

#define ASUS_WMI_DSTS_MAX_BRIGTH_MASK	0x0000FF00
@@ -270,6 +271,11 @@ static int asus_wmi_get_devstate_bits(u32 dev_id, u32 mask) 
	if (!(retval & ASUS_WMI_DSTS_PRESENCE_BIT))

		return -ENODEV;



	if (mask == ASUS_WMI_DSTS_STATUS_BIT) {

		if (retval & ASUS_WMI_DSTS_UNKNOWN_BIT)

			return -ENODEV;

	}



	return retval & mask;

}