Patch "Bluetooth: ISO: don't try to remove CIG if there are bound CIS left" has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    Bluetooth: ISO: don't try to remove CIG if there are bound CIS left

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     bluetooth-iso-don-t-try-to-remove-cig-if-there-are-b.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 69d8a8dc439a8b17f1b8bd43ab6398f9745db343
Author: Pauli Virtanen <pav@xxxxxx>
Date:   Thu Jun 1 09:34:44 2023 +0300

    Bluetooth: ISO: don't try to remove CIG if there are bound CIS left
    
    [ Upstream commit 6c242c64a09e78349fb0a5f0a6f8076a3d7c0bb4 ]
    
    Consider existing BOUND & CONNECT state CIS to block CIG removal.
    Otherwise, under suitable timing conditions we may attempt to remove CIG
    while Create CIS is pending, which fails.
    
    Fixes: 26afbd826ee3 ("Bluetooth: Add initial implementation of CIS connections")
    Signed-off-by: Pauli Virtanen <pav@xxxxxx>
    Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index c2c6dea01cc91..ab9f00252dc2a 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -966,6 +966,8 @@ static void cis_cleanup(struct hci_conn *conn)
 	/* Check if ISO connection is a CIS and remove CIG if there are
 	 * no other connections using it.
 	 */
+	hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, BT_BOUND, &d);
+	hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, BT_CONNECT, &d);
 	hci_conn_hash_list_state(hdev, find_cis, ISO_LINK, BT_CONNECTED, &d);
 	if (d.count)
 		return;



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