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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: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2012-07-02 12:34:24 +02:00 committed by Greg Kroah-Hartman
parent aacef9c561
commit b7d28e32c9
1 changed files with 0 additions and 8 deletions
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8
drivers/usb/serial/metro-usb.c
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@ -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);