This is needed for user-space to ensure that HCI init scheduled from
hci_register_dev is completed.
Function hci_register_dev queues power_on workqueue which will run
hci_power_on > hci_dev_do_open. Function hci_dev_do_open sets HCI_INIT
for some time.
It is not allowed to bind to HCI socket user channel when HCI_INIT is
set. As result, bind might fail when user-space program is run early
enough during boot.
Now, user-space program can first issue HCIDEVUP ioctl to ensure HCI
init scheduled at hci_register_dev was completed.
Signed-off-by: Vasyl Vavrychuk <vasyl.vavrychuk@xxxxxxxxxxxxxxx>
---
net/bluetooth/hci_sock.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 33b3c0ffc339..c98de809f856 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -1194,9 +1194,7 @@ static int hci_sock_bind(struct socket *sock, struct sockaddr *addr,
if (test_bit(HCI_INIT, &hdev->flags) ||
hci_dev_test_flag(hdev, HCI_SETUP) ||
- hci_dev_test_flag(hdev, HCI_CONFIG) ||
- (!hci_dev_test_flag(hdev, HCI_AUTO_OFF) &&
- test_bit(HCI_UP, &hdev->flags))) {
+ hci_dev_test_flag(hdev, HCI_CONFIG)) {
err = -EBUSY;
hci_dev_put(hdev);
goto done;
--
2.30.2
