Received-SPF: pass (google.com: domain of linux-bluetooth-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Luiz Augusto von Dentz <luiz.dentz@gmail.com>
To:     linux-bluetooth@vger.kernel.org
Subject: [PATCH v3 1/4] a2dp: Fix caching endpoints for unknown version
Date:   Tue, 19 May 2020 13:03:42 -0700
Message-Id: <20200519200345.217345-1-luiz.dentz@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-bluetooth-owner@vger.kernel.org
Precedence: bulk

From: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>

Don't cache the capabilities of endpoints which the version is unknown
since so capabilities may not be available in such case.
---
 profiles/audio/a2dp.c  | 11 +++++++++--
 profiles/audio/avdtp.c |  7 ++++++-
 profiles/audio/avdtp.h |  1 +
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/profiles/audio/a2dp.c b/profiles/audio/a2dp.c
index a2ce3204d..15e211b95 100644
--- a/profiles/audio/a2dp.c
+++ b/profiles/audio/a2dp.c
@@ -2667,15 +2667,22 @@ static void discover_cb(struct avdtp *session, GSList *seps,
 				struct avdtp_error *err, void *user_data)
 {
 	struct a2dp_setup *setup = user_data;
+	uint16_t version = avdtp_get_version(session);
 
-	DBG("err %p", err);
+	DBG("version 0x%04x err %p", version, err);
 
 	setup->seps = seps;
 	setup->err = err;
 
 	if (!err) {
 		g_slist_foreach(seps, register_remote_sep, setup->chan);
-		store_remote_seps(setup->chan);
+
+		/* Only store version has been initialized as features like
+		 * Delay Reporting may not be queried if the version in
+		 * unknown.
+		 */
+		if (version)
+			store_remote_seps(setup->chan);
 	}
 
 	finalize_discover(setup);
diff --git a/profiles/audio/avdtp.c b/profiles/audio/avdtp.c
index b632e41c5..1fd2be051 100644
--- a/profiles/audio/avdtp.c
+++ b/profiles/audio/avdtp.c
@@ -2256,7 +2256,7 @@ static uint16_t get_version(struct avdtp *session)
 	const sdp_record_t *rec;
 	sdp_list_t *protos;
 	sdp_data_t *proto_desc;
-	uint16_t ver = 0x0100;
+	uint16_t ver = 0x0000;
 
 	rec = btd_device_get_record(session->device, A2DP_SINK_UUID);
 	if (!rec)
@@ -2396,6 +2396,11 @@ struct avdtp *avdtp_new(GIOChannel *chan, struct btd_device *device,
 	return session;
 }
 
+uint16_t avdtp_get_version(struct avdtp *session)
+{
+	return session->version;
+}
+
 static GIOChannel *l2cap_connect(struct avdtp *session)
 {
 	GError *err = NULL;
diff --git a/profiles/audio/avdtp.h b/profiles/audio/avdtp.h
index ad2cb9bcb..f1e51d4e3 100644
--- a/profiles/audio/avdtp.h
+++ b/profiles/audio/avdtp.h
@@ -310,3 +310,4 @@ struct avdtp_server *avdtp_get_server(struct avdtp_local_sep *lsep);
 
 struct avdtp *avdtp_new(GIOChannel *chan, struct btd_device *device,
 							struct queue *lseps);
+uint16_t avdtp_get_version(struct avdtp *session);
-- 
2.25.3