[Patch RFC 22/37] usb: ftdi-elan: Convert "mutex" to semaphore

[Thomas Gleixner <tglx@linutronix.de>]

[-- Attachment #1: usb-ftdi-elan-use-semaphore-init-instead-of-init-MUTEX.patch --]
[-- Type: text/plain, Size: 920 bytes --]

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>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/usb/misc/ftdi-elan.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Index: linux-2.6-tip/drivers/usb/misc/ftdi-elan.c
===================================================================
--- linux-2.6-tip.orig/drivers/usb/misc/ftdi-elan.c
+++ linux-2.6-tip/drivers/usb/misc/ftdi-elan.c
@@ -2766,7 +2766,7 @@ 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);
+	semaphore_init(&ftdi->sw_lock);
         ftdi->udev = usb_get_dev(interface_to_usbdev(interface));
         ftdi->interface = interface;
         mutex_init(&ftdi->u132_lock);