From tglx@linutronix.de  Tue Sep  7 19:17:28 2010
From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 07 Sep 2010 14:32:43 -0000
Subject: usb: ftdi-elan: Convert "mutex" to semaphore
Cc: Andrew Morton <akpm@linux-foundation.org>, Ingo Molnar <mingo@elte.hu>, Peter Zijlstra <peterz@infradead.org>, Christoph Hellwig <hch@infradead.org>, Greg Kroah-Hartman <gregkh@suse.de>, linux-usb@vger.kernel.org
Message-ID: <20100907125055.947634394@linutronix.de>
Content-Disposition: inline; filename=drivers-usb-ftdi-elan-sema.patch


The "mutex" ftdi->sw_lock is used as a lock and a completion. Convert
it to a real semaphore which allows both.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/usb/misc/ftdi-elan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/misc/ftdi-elan.c
+++ b/drivers/usb/misc/ftdi-elan.c
@@ -2769,7 +2769,7 @@ static int ftdi_elan_probe(struct usb_in
         ftdi->sequence_num = ++ftdi_instances;
         mutex_unlock(&ftdi_module_lock);
         ftdi_elan_init_kref(ftdi);
-        init_MUTEX(&ftdi->sw_lock);
+	sema_init(&ftdi->sw_lock, 1);
         ftdi->udev = usb_get_dev(interface_to_usbdev(interface));
         ftdi->interface = interface;
         mutex_init(&ftdi->u132_lock);