Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit b7d28e32 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
Browse files

USB: metro-usb: fix tty_flip_buffer_push use 



Do not set low_latency flag at open as tty_flip_buffer_push must not be
called in IRQ context with low_latency set.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarJohan Hovold <jhovold@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent aacef9c5

drivers/usb/serial/metro-usb.c

+0 −8
Original line number Diff line number Diff line
@@ -222,14 +222,6 @@ static int metrousb_open(struct tty_struct *tty, struct usb_serial_port *port) 
	metro_priv->throttled = 0;

	spin_unlock_irqrestore(&metro_priv->lock, flags);



	/*

	 * Force low_latency on so that our tty_push actually forces the data

	 * through, otherwise it is scheduled, and with high data rates (like

	 * with OHCI) data can get lost.

	 */

	if (tty)

		tty->low_latency = 1;



	/* Clear the urb pipe. */

	usb_clear_halt(serial->dev, port->interrupt_in_urb->pipe);