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Revert "Bluetooth: Remove rfcomm_carrier_raised()"

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This reverts commit f86772af6a.

This is the first of a 3-patch revert, together with
Revert "Bluetooth: Always wait for a connection on RFCOMM open()" and
Revert "Bluetooth: Move rfcomm_get_device() before rfcomm_dev_activate()".

Commit 4a2fb3ecc7,
"Bluetooth: Always wait for a connection on RFCOMM open()" open-codes
blocking on tty open(), rather than using the default behavior
implemented by the tty port.

The reasons for reverting that patch are detailed in that changelog;
this patch restores required functionality for that revert.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Tested-By: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Peter Hurley 2014-02-09 20:59:01 -05:00 committed by Marcel Holtmann
parent 9b7655eafe
commit 7f717b91dd
1 changed files with 8 additions and 0 deletions
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8
net/bluetooth/rfcomm/tty.c
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@ -160,6 +160,14 @@ static int rfcomm_dev_activate(struct tty_port *port, struct tty_struct *tty)
return err; return err;
} }
/* we block the open until the dlc->state becomes BT_CONNECTED */
static int rfcomm_dev_carrier_raised(struct tty_port *port)
{
struct rfcomm_dev *dev = container_of(port, struct rfcomm_dev, port);
return (dev->dlc->state == BT_CONNECTED);
}
/* device-specific cleanup: close the dlc */ /* device-specific cleanup: close the dlc */
static void rfcomm_dev_shutdown(struct tty_port *port) static void rfcomm_dev_shutdown(struct tty_port *port)
{ {