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Commit 9c5c6ed7 authored by Benjamin Tissoires's avatar Benjamin Tissoires Committed by Jiri Kosina
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HID: core: cleanup .claimed field on disconnect 



When a subdriver is rmmod-ed then re-insmod-ed, the hid device is not
destroyed as it is owned by the transport layer.
So when we re-probed the device, the hid device is assumed to be already
claimed, and can lead to page faults if hid-core tries to forward the
emitted data to the to-be-created claimed node.

Signed-off-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent fa51ee10

drivers/hid/hid-core.c

+1 −0
Original line number Original line Diff line number Diff line
@@ -1659,6 +1659,7 @@ void hid_disconnect(struct hid_device *hdev) 
		hdev->hiddev_disconnect(hdev);

		hdev->hiddev_disconnect(hdev);

	if (hdev->claimed & HID_CLAIMED_HIDRAW)

	if (hdev->claimed & HID_CLAIMED_HIDRAW)

		hidraw_disconnect(hdev);

		hidraw_disconnect(hdev);

	hdev->claimed = 0;

}

}

EXPORT_SYMBOL_GPL(hid_disconnect);

EXPORT_SYMBOL_GPL(hid_disconnect);