[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: Ohad Ben-Cohen <ohad@bencohen.org> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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2 changed files with 8 additions and 2 deletions
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@ -479,6 +479,11 @@ static int hci_uart_tty_ioctl(struct tty_struct *tty, struct file * file,
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return hu->proto->id;
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return -EUNATCH;
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case HCIUARTGETDEVICE:
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if (test_bit(HCI_UART_PROTO_SET, &hu->flags))
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return hu->hdev->id;
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return -EUNATCH;
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default:
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err = n_tty_ioctl(tty, file, cmd, arg);
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break;
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@ -28,8 +28,9 @@
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#endif
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/* Ioctls */
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#define HCIUARTSETPROTO _IOW('U', 200, int)
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#define HCIUARTGETPROTO _IOR('U', 201, int)
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#define HCIUARTSETPROTO _IOW('U', 200, int)
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#define HCIUARTGETPROTO _IOR('U', 201, int)
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#define HCIUARTGETDEVICE _IOR('U', 202, int)
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/* UART protocols */
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#define HCI_UART_MAX_PROTO 4
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