diff options
| -rw-r--r-- | drivers/bluetooth/hci_ldisc.c | 39 | ||||
| -rw-r--r-- | drivers/bluetooth/hci_uart.h | 5 |
2 files changed, 43 insertions, 1 deletions
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index b6d1f200401a..74e0966b3ead 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -156,6 +156,35 @@ restart: return 0; } +static void hci_uart_init_work(struct work_struct *work) +{ + struct hci_uart *hu = container_of(work, struct hci_uart, init_ready); + int err; + + if (!test_and_clear_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) + return; + + err = hci_register_dev(hu->hdev); + if (err < 0) { + BT_ERR("Can't register HCI device"); + hci_free_dev(hu->hdev); + hu->hdev = NULL; + hu->proto->close(hu); + } + + set_bit(HCI_UART_REGISTERED, &hu->flags); +} + +int hci_uart_init_ready(struct hci_uart *hu) +{ + if (!test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) + return -EALREADY; + + schedule_work(&hu->init_ready); + + return 0; +} + /* ------- Interface to HCI layer ------ */ /* Initialize device */ static int hci_uart_open(struct hci_dev *hdev) @@ -264,6 +293,8 @@ static int hci_uart_tty_open(struct tty_struct *tty) hu->tty = tty; tty->receive_room = 65536; + INIT_WORK(&hu->init_ready, hci_uart_init_work); + spin_lock_init(&hu->rx_lock); /* Flush any pending characters in the driver and line discipline. */ @@ -302,7 +333,8 @@ static void hci_uart_tty_close(struct tty_struct *tty) if (test_and_clear_bit(HCI_UART_PROTO_SET, &hu->flags)) { if (hdev) { - hci_unregister_dev(hdev); + if (test_bit(HCI_UART_REGISTERED, &hu->flags)) + hci_unregister_dev(hdev); hci_free_dev(hdev); } hu->proto->close(hu); @@ -402,12 +434,17 @@ static int hci_uart_register_dev(struct hci_uart *hu) else hdev->dev_type = HCI_BREDR; + if (test_bit(HCI_UART_INIT_PENDING, &hu->hdev_flags)) + return 0; + if (hci_register_dev(hdev) < 0) { BT_ERR("Can't register HCI device"); hci_free_dev(hdev); return -ENODEV; } + set_bit(HCI_UART_REGISTERED, &hu->flags); + return 0; } diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h index aaf9d7de1b9f..fffa61ff5cb1 100644 --- a/drivers/bluetooth/hci_uart.h +++ b/drivers/bluetooth/hci_uart.h @@ -47,6 +47,7 @@ #define HCI_UART_RAW_DEVICE 0 #define HCI_UART_RESET_ON_INIT 1 #define HCI_UART_CREATE_AMP 2 +#define HCI_UART_INIT_PENDING 3 struct hci_uart; @@ -66,6 +67,8 @@ struct hci_uart { unsigned long flags; unsigned long hdev_flags; + struct work_struct init_ready; + struct hci_uart_proto *proto; void *priv; @@ -76,6 +79,7 @@ struct hci_uart { /* HCI_UART proto flag bits */ #define HCI_UART_PROTO_SET 0 +#define HCI_UART_REGISTERED 1 /* TX states */ #define HCI_UART_SENDING 1 @@ -84,6 +88,7 @@ struct hci_uart { int hci_uart_register_proto(struct hci_uart_proto *p); int hci_uart_unregister_proto(struct hci_uart_proto *p); int hci_uart_tx_wakeup(struct hci_uart *hu); +int hci_uart_init_ready(struct hci_uart *hu); #ifdef CONFIG_BT_HCIUART_H4 int h4_init(void); |