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Commit d2158744 authored by Marcel Holtmann's avatar Marcel Holtmann Committed by David S. Miller
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[Bluetooth] Add HCIUARTGETDEVICE support for HCI line discipline 



Adding HCIUARTGETDEVICE makes it possible to get the HCI device number
that is attached to a given serial device. This is required during the
initialization process of some Bluetooth chips.

Signed-off-by: default avatarOhad Ben-Cohen <ohad@bencohen.org>
Signed-off-by: default avatarMarcel Holtmann <marcel@holtmann.org>
parent 5be39466

drivers/bluetooth/hci_ldisc.c

+5 −0
Original line number Diff line number Diff line
@@ -479,6 +479,11 @@ static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file, 
			return hu->proto->id;

		return -EUNATCH;



	case HCIUARTGETDEVICE:

		if (test_bit(HCI_UART_PROTO_SET, &hu->flags))

			return hu->hdev->id;

		return -EUNATCH;



	default:

		err = n_tty_ioctl(tty, file, cmd, arg);

		break;

drivers/bluetooth/hci_uart.h

+3 −2
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
/* Ioctls */

#define HCIUARTSETPROTO		_IOW('U', 200, int)

#define HCIUARTGETPROTO		_IOR('U', 201, int)

#define HCIUARTGETDEVICE	_IOR('U', 202, int)



/* UART protocols */

#define HCI_UART_MAX_PROTO	4