[Bluetooth] Add module parameter for HCI_Reset

This patch adds a module parameter to the hci_uart and hci_usb
drivers for forcing a HCI_Reset on initialization.
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

drivers/bluetooth/hci_ldisc.c

@@ -51,6 +51,7 @@
 
 #include <net/bluetooth/bluetooth.h>
 #include <net/bluetooth/hci_core.h>
+
 #include "hci_uart.h"
 
 #ifndef CONFIG_BT_HCIUART_DEBUG
@@ -60,6 +61,8 @@
 #define BT_DMP( A... )
 #endif
 
+static int reset = 0;
+
 static struct hci_uart_proto *hup[HCI_UART_MAX_PROTO];
 
 int hci_uart_register_proto(struct hci_uart_proto *p)
@@ -412,7 +415,10 @@ static int hci_uart_register_dev(struct hci_uart *hu)
 	hdev->destruct = hci_uart_destruct;
 
 	hdev->owner = THIS_MODULE;
-	
+
+	if (reset)
+		set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
+
 	if (hci_register_dev(hdev) < 0) {
 		BT_ERR("Can't register HCI device");
 		hci_free_dev(hdev);
@@ -577,7 +583,10 @@ static void __exit hci_uart_exit(void)
 module_init(hci_uart_init);
 module_exit(hci_uart_exit);
 
-MODULE_AUTHOR("Maxim Krasnyansky <maxk@qualcomm.com>");
+module_param(reset, bool, 0644);
+MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
+
+MODULE_AUTHOR("Maxim Krasnyansky <maxk@qualcomm.com>, Marcel Holtmann <marcel@holtmann.org>");
 MODULE_DESCRIPTION("Bluetooth HCI UART driver ver " VERSION);
 MODULE_VERSION(VERSION);
 MODULE_LICENSE("GPL");

drivers/bluetooth/hci_usb.c

@@ -66,6 +66,8 @@
 #define URB_ZERO_PACKET 0
 #endif
 
+static int reset = 0;
+
 #ifdef CONFIG_BT_HCIUSB_SCO
 static int isoc = 2;
 #endif
@@ -963,7 +965,7 @@ static int hci_usb_probe(struct usb_interface *intf, const struct usb_device_id
 
 	hdev->owner = THIS_MODULE;
 
-	if (id->driver_info & HCI_RESET)
+	if (reset || id->driver_info & HCI_RESET)
 		set_bit(HCI_QUIRK_RESET_ON_INIT, &hdev->quirks);
 
 	if (hci_register_dev(hdev) < 0) {
@@ -1036,6 +1038,9 @@ static void __exit hci_usb_exit(void)
 module_init(hci_usb_init);
 module_exit(hci_usb_exit);
 
+module_param(reset, bool, 0644);
+MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
+
 #ifdef CONFIG_BT_HCIUSB_SCO
 module_param(isoc, int, 0644);
 MODULE_PARM_DESC(isoc, "Set isochronous transfers for SCO over HCI support");