diff options
| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2008-02-20 21:39:25 +0000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2008-02-22 11:51:12 +1100 |
| commit | f2463f138c0b7436b315651d3d918cd3083ed56b (patch) | |
| tree | d664edf5f9501ec1048d09aebe0b6cf1707c1a35 | |
| parent | 8f1473e7ec3a6d7b456b6168238c103e333f5c81 (diff) | |
USB: iuu_phoenix: lock priv->tiostatus properly
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/serial/iuu_phoenix.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index fde188e23ce1..a09b9a85b16d 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -148,20 +148,21 @@ static int iuu_tiocmset(struct usb_serial_port *port, struct file *file, unsigned int set, unsigned int clear) { struct iuu_private *priv = usb_get_serial_port_data(port); - struct tty_struct *tty; - tty = port->tty; + unsigned long flags; + /* FIXME: locking on tiomstatus */ dbg("%s (%d) msg : SET = 0x%04x, CLEAR = 0x%04x ", __FUNCTION__, port->number, set, clear); + + spin_lock_irqsave(&priv->lock, flags); if (set & TIOCM_RTS) priv->tiostatus = TIOCM_RTS; if (!(set & TIOCM_RTS) && priv->tiostatus == TIOCM_RTS) { dbg("%s TIOCMSET RESET called !!!", __FUNCTION__); priv->reset = 1; - return 0; } - + spin_unlock_irqrestore(&priv->lock, flags); return 0; } @@ -173,7 +174,14 @@ static int iuu_tiocmset(struct usb_serial_port *port, struct file *file, static int iuu_tiocmget(struct usb_serial_port *port, struct file *file) { struct iuu_private *priv = usb_get_serial_port_data(port); - return priv->tiostatus; + unsigned long flags; + int rc; + + spin_lock_irqsave(&priv->lock, flags); + rc = priv->tiostatus; + spin_unlock_irqrestore(&priv->lock, flags); + + return rc; } static void iuu_rxcmd(struct urb *urb) |