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From: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
To: linux-bluetooth@vger.kernel.org
Subject: [PATCH BlueZ v3 2/4] hog-lib: Make use of bt_uhid_replay
Date: Wed, 10 Apr 2024 10:02:03 -0400
Message-ID: <20240410140205.4056047-2-luiz.dentz@gmail.com>
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From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

This makes use of bt_uhid_replay to replay the GET/SET_REPORT messages
recorded during the first time the device is created.
---
 profiles/input/hog-lib.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/profiles/input/hog-lib.c b/profiles/input/hog-lib.c
index 8071e1364b10..0291adb6eb23 100644
--- a/profiles/input/hog-lib.c
+++ b/profiles/input/hog-lib.c
@@ -856,12 +856,14 @@ static void set_report(struct uhid_event *ev, void *user_data)
 		--size;
 	}
 
+	if (hog->attrib == NULL) {
+		err = -ENOTCONN;
+		goto fail;
+	}
+
 	DBG("Sending report type %d ID %d to handle 0x%X", report->type,
 				report->id, report->value_handle);
 
-	if (hog->attrib == NULL)
-		return;
-
 	hog->setrep_att = gatt_write_char(hog->attrib,
 						report->value_handle,
 						data, size, set_report_cb,
@@ -1726,6 +1728,11 @@ bool bt_hog_attach(struct bt_hog *hog, void *gatt)
 				"handle 0x%04x", r->value_handle);
 	}
 
+	/* Attempt to replay get/set report messages since the driver might not
+	 * be aware the device has been disconnected in the meantime.
+	 */
+	bt_uhid_replay(hog->uhid);
+
 	return true;
 }
 
-- 
2.44.0