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usb: ftdi-elan: Convert "mutex" to semaphore 

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>
This commit is contained in:
Thomas Gleixner 2010-09-07 14:32:43 +00:00 committed by Greg Kroah-Hartman
parent a1df4e45c8
commit 5014b5e33a
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/misc/ftdi-elan.c
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@ -2769,7 +2769,7 @@ static int ftdi_elan_probe(struct usb_interface *interface,
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);