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Commit a9525b80 authored by Benjamin Tissoires's avatar Benjamin Tissoires Committed by Jiri Kosina
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HID: logitech-hidpp: return an error if the queried feature is not present 



Or the device just answers a valid feature '0'.

Signed-off-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: default avatarBastien Nocera <hadess@hadess.net>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent a52ec107

drivers/hid/hid-logitech-hidpp.c

+3 −0
Original line number Diff line number Diff line
@@ -503,6 +503,9 @@ static int hidpp_root_get_feature(struct hidpp_device *hidpp, u16 feature, 
	if (ret)

		return ret;



	if (response.fap.params[0] == 0)

		return -ENOENT;



	*feature_index = response.fap.params[0];

	*feature_type = response.fap.params[1];