[PATCH] Bluetooth: Call shutdown for HCI_USER_CHANNEL

[Abhishek Pandit-Subedi]

From: Abhishek Pandit-Subedi <abhishekpandit@xxxxxxxxxxxx>

Some drivers depend on shutdown being called for proper operation.
There's no reason to restrict this from being called when using
HCI_USER_CHANNEL.

Signed-off-by: Abhishek Pandit-Subedi <abhishekpandit@xxxxxxxxxxxx>
---
This is easy to reproduce on QCA6174-A, which uses the hci_qca driver.
Simply open the socket, bind as userchannel and close again. It will
succeed the first time and fail the second time (because shutdown wasn't
called). A similar bug also occurs with btmtksdio (using MT7921).

Question for maintainers: What is a driver supposed to be doing during
shutdown? We should add some documentation to `struct hci_dev` to
clarify.


 net/bluetooth/hci_sync.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index e08c0503027d..be78fd708f16 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -4680,7 +4680,6 @@ int hci_dev_close_sync(struct hci_dev *hdev)
 	}
 
 	if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) &&
-	    !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
 	    test_bit(HCI_UP, &hdev->flags)) {
 		/* Execute vendor specific shutdown routine */
 		if (hdev->shutdown)
-- 
2.37.2.672.g94769d06f0-goog