HID: logitech-hidpp: notify battery on connect

When a device reconnects, there is a high chance its power supply has
been changed (for a battery replacement for instance). Just forward
the battery state here.

Signed-off-by: Benjamin Tissoires <[email protected]>
Tested-by: Bastien Nocera <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index 22129ddac3aeaea8abfe3a34f8f99e2d4559fe98..0781d2bb00d6171b944b261f95d1957b29f377fe 100644 (file)
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -2463,6 +2463,13 @@ static void hidpp_connect_event(struct hidpp_device *hidpp)
 
        hidpp_initialize_battery(hidpp);
 
+       /* forward current battery state */
+       if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP20_BATTERY) {
+               hidpp20_query_battery_info(hidpp);
+               if (hidpp->battery.ps)
+                       power_supply_changed(hidpp->battery.ps);
+       }
+
        if (!(hidpp->quirks & HIDPP_QUIRK_NO_HIDINPUT) || hidpp->delayed_input)
                /* if the input nodes are already created, we can stop now */
                return;