From: Thomas Gleixner <tglx@linutronix.de>
Date: Tue, 7 Sep 2010 14:32:43 +0000 (+0000)
Subject: usb: ftdi-elan: Convert "mutex" to semaphore
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5014b5e33a5485ab669ce536078c957ec221ade3;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

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>
---

diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c
index aecf380f6ec..c8eec9c2d89 100644
--- 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_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);