From: Archie Pusaka <apusaka@chromium.org>
Date: Mon, 3 Aug 2020 06:52:24 +0000 (+0800)
Subject: input/device: Send UHID_DESTROY upon disconnection
X-Git-Tag: submit/tizen/20210606.232858~24
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c9e030fc85896794495596128e87803ecf3412e9;p=platform%2Fupstream%2Fbluez.git

input/device: Send UHID_DESTROY upon disconnection

According to the uhid documentation: "If your device disconnects,
you should send an UHID_DESTROY event"

Signed-off-by: Anuj Jain <anuj01.jain@samsung.com>
Signed-off-by: Ayush Garg <ayush.garg@samsung.com>
---

diff --git a/profiles/input/device.c b/profiles/input/device.c
index 94dba27a..dd57b763 100644
--- a/profiles/input/device.c
+++ b/profiles/input/device.c
@@ -119,6 +119,7 @@ bool input_get_classic_bonded_only(void)
 
 static void input_device_enter_reconnect_mode(struct input_device *idev);
 static int connection_disconnect(struct input_device *idev, uint32_t flags);
+static int uhid_disconnect(struct input_device *idev);
 
 static bool input_device_bonded(struct input_device *idev)
 {
@@ -400,6 +401,10 @@ static gboolean intr_watch_cb(GIOChannel *chan, GIOCondition cond, gpointer data
 	if (!idev->ctrl_io && idev->virtual_cable_unplug)
 		virtual_cable_unplug(idev);
 
+	/* If connection abruptly ended, uhid might be not yet disconnected */
+	if (idev->uhid_created)
+		uhid_disconnect(idev);
+
 	return FALSE;
 }
 
@@ -976,6 +981,28 @@ static int uhid_connadd(struct input_device *idev, struct hidp_connadd_req *req)
 	return err;
 }
 
+static int uhid_disconnect(struct input_device *idev)
+{
+	int err;
+	struct uhid_event ev;
+
+	if (!idev->uhid_created)
+		return 0;
+
+	memset(&ev, 0, sizeof(ev));
+	ev.type = UHID_DESTROY;
+
+	err = bt_uhid_send(idev->uhid, &ev);
+	if (err < 0) {
+		error("bt_uhid_send: %s", strerror(-err));
+		return err;
+	}
+
+	idev->uhid_created = false;
+
+	return err;
+}
+
 static gboolean encrypt_notify(GIOChannel *io, GIOCondition condition,
 								gpointer data)
 {
@@ -1150,7 +1177,7 @@ static int connection_disconnect(struct input_device *idev, uint32_t flags)
 		idev->virtual_cable_unplug = true;
 
 	if (idev->uhid)
-		return 0;
+		return uhid_disconnect(idev);
 	else
 		return ioctl_disconnect(idev, flags);
 }