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authorAlan Cox <alan@lxorguk.ukuu.org.uk>2008-02-20 21:39:25 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2008-04-24 21:16:39 -0700
commit7b1fc8bc6d6881ff7f8876cbe665b3ad5271bc03 (patch)
treeaa7828f20d8deae3de7b47630b915368e63bb1af
parente298449401463dd18f24a87c48f9b0ec62bad936 (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.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c
index fde188e23ce..a09b9a85b16 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)