[PATCH 5.17 0629/1126] Bluetooth: hci_sync: fix undefined return of hci_disconnect_all_sync()

Greg Kroah-Hartman
2022-04-05T09:52:58Z

From: Tom Rix <trix@redhat.com>

[ Upstream commit 8cd3c55c629efd91e5f2b3e89d850575c5b90d47 ]

clang static analysis reports this problem
hci_sync.c:4428:2: warning: Undefined or garbage value
returned to caller
return err;
^~~~~~~~~~

If there are no connections this function is a noop but
err is never set and a false error could be reported.
Return 0 as other hci_* functions do.

Fixes: 182ee45da083 ("Bluetooth: hci_sync: Rework hci_suspend_notifier")
Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
net/bluetooth/hci_sync.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 5e93f37c2e04..405d48c3e63e 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -4432,7 +4432,7 @@ static int hci_disconnect_all_sync(struct hci_dev *hdev, u8 reason)
return err;
}

- return err;
+ return 0;
}

/* This function perform power off HCI command sequence as follows:
--
2.34.1