[PATCH 5.5 141/257] platform/x86: asus-wmi: Support laptops where the first battery is named BATT

[Greg Kroah-Hartman]

From: Kristian Klausen <kristian@xxxxxxxxxx>

commit 6b3586d45bba14f6912f37488090c37a3710e7b4 upstream.

The WMI method to set the charge threshold does not provide a
way to specific a battery, so we assume it is the first/primary
battery (by checking if the name is BAT0).
On some newer ASUS laptops (Zenbook UM431DA) though, the
primary/first battery isn't named BAT0 but BATT, so we need
to support that case.

Fixes: 7973353e92ee ("platform/x86: asus-wmi: Refactor charge threshold to use the battery hooking API")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Kristian Klausen <kristian@xxxxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/platform/x86/asus-wmi.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -418,8 +418,11 @@ static int asus_wmi_battery_add(struct p
 {
 	/* The WMI method does not provide a way to specific a battery, so we
 	 * just assume it is the first battery.
+	 * Note: On some newer ASUS laptops (Zenbook UM431DA), the primary/first
+	 * battery is named BATT.
 	 */
-	if (strcmp(battery->desc->name, "BAT0") != 0)
+	if (strcmp(battery->desc->name, "BAT0") != 0 &&
+	    strcmp(battery->desc->name, "BATT") != 0)
 		return -ENODEV;
 
 	if (device_create_file(&battery->dev,