HID: wacom: leds: Don't try to control the EKR's read-only LEDs
commit 74aebed6dc13425233f2224668353cff7a112776 upstream.
Commit a50aac7193f1 introduces 'led.groups' and adds EKR support
for these groups. However, unlike the other devices with LEDs,
the EKR's LEDs are read-only and we shouldn't attempt to control
them in wacom_led_control().
See bug: https://sourceforge.net/p/linuxwacom/bugs/342/
Fixes: a50aac7193f1 ("HID: wacom: leds: dynamically allocate LED groups")
Signed-off-by: Aaron Armstrong Skomra <aaron.skomra@wacom.com>
Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 53ac19b..0224df2 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -712,6 +712,9 @@
if (!wacom->led.groups)
return -ENOTSUPP;
+ if (wacom->wacom_wac.features.type == REMOTE)
+ return -ENOTSUPP;
+
if (wacom->wacom_wac.pid) { /* wireless connected */
report_id = WAC_CMD_WL_LED_CONTROL;
buf_size = 13;