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USB: cypress_m8: remove bogus disconnect test from close

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Remove disconnected test from close which did not protect any device IO
at all.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Johan Hovold 2013-03-21 12:37:37 +01:00 committed by Greg Kroah-Hartman
parent ecb9eb8064
commit 87ddf4dc16
1 changed files with 0 additions and 7 deletions
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7
drivers/usb/serial/cypress_m8.c
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@ -632,12 +632,6 @@ static void cypress_close(struct usb_serial_port *port)
struct cypress_private *priv = usb_get_serial_port_data(port);
unsigned long flags;
/* writing is potentially harmful, lock must be taken */
mutex_lock(&port->serial->disc_mutex);
if (port->serial->disconnected) {
mutex_unlock(&port->serial->disc_mutex);
return;
}
spin_lock_irqsave(&priv->lock, flags);
kfifo_reset_out(&priv->write_fifo);
spin_unlock_irqrestore(&priv->lock, flags);
@ -649,7 +643,6 @@ static void cypress_close(struct usb_serial_port *port)
if (stats)
dev_info(&port->dev, "Statistics: %d Bytes In | %d Bytes Out | %d Commands Issued\n",
priv->bytes_in, priv->bytes_out, priv->cmd_count);
mutex_unlock(&port->serial->disc_mutex);
} /* cypress_close */