From: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
If the controller has no buffers left return -ENOBUFF to indicate that
iso_cnt might be out of sync.
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
---
net/bluetooth/iso.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/net/bluetooth/iso.c b/net/bluetooth/iso.c
index 3c2c98eecc62..370ea69e9f0c 100644
--- a/net/bluetooth/iso.c
+++ b/net/bluetooth/iso.c
@@ -458,6 +458,13 @@ static int iso_connect_cis(struct sock *sk)
goto unlock;
}
+ /* Check if there are available buffers for output/TX. */
+ if (iso_pi(sk)->qos.ucast.out.sdu && !hci_conn_num(hdev, CIS_LINK) &&
+ (hdev->iso_pkts && !hdev->iso_cnt)) {
+ err = -ENOBUFS;
+ goto unlock;
+ }
+
/* Just bind if DEFER_SETUP has been set */
if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags)) {
hcon = hci_bind_cis(hdev, &iso_pi(sk)->dst,
--
2.49.0
