[PATCH 5.4 27/86] HID: Ignore battery for Elan touchscreen on ASUS UX550

[Greg Kroah-Hartman]

From: Seth Miller <miller.s...@gmail.com>

[ Upstream commit 7c38e769d5c508939ce5dc26df72602f3c902342 ]

Battery status is being reported for the Elan touchscreen on ASUS
UX550 laptops despite not having a batter. It always shows either 0 or
1%.

Signed-off-by: Seth Miller <miller.s...@gmail.com>
Signed-off-by: Jiri Kosina <jkos...@suse.cz>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/hid/hid-ids.h   | 1 +
 drivers/hid/hid-input.c | 2 ++
 2 files changed, 3 insertions(+)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 2aa810665a78c..33183933337af 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -393,6 +393,7 @@
 #define USB_DEVICE_ID_TOSHIBA_CLICK_L9W        0x0401
 #define USB_DEVICE_ID_HP_X2            0x074d
 #define USB_DEVICE_ID_HP_X2_10_COVER   0x0755
+#define USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN   0x2706
 
 #define USB_VENDOR_ID_ELECOM           0x056e
 #define USB_DEVICE_ID_ELECOM_BM084     0x0061
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
index b2da8476d0d30..ec08895e7b1dc 100644
--- a/drivers/hid/hid-input.c
+++ b/drivers/hid/hid-input.c
@@ -322,6 +322,8 @@ static const struct hid_device_id hid_battery_quirks[] = {
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
                USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
          HID_BATTERY_QUIRK_IGNORE },
+       { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, 
USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
+         HID_BATTERY_QUIRK_IGNORE },
        {}
 };
 
-- 
2.27.0