kfifo: move out spinlock

Move the pointer to the spinlock out of struct kfifo.  Most users in
tree do not actually use a spinlock, so the few exceptions now have to
call kfifo_{get,put}_locked, which takes an extra argument to a
spinlock.

Signed-off-by: Stefani Seibold <stefani@seibold.net>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 3 insertions, 4 deletions

diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c
index bbe005cefcfb..61eef18218be 100644
--- a/drivers/usb/serial/generic.c
+++ b/drivers/usb/serial/generic.c
@@ -285,7 +285,7 @@ static int usb_serial_generic_write_start(struct usb_serial_port *port)
                 return 0;
 
         data = port->write_urb->transfer_buffer;
-        count = kfifo_get(port->write_fifo, data, port->bulk_out_size);
+        count = kfifo_get_locked(port->write_fifo, data, port->bulk_out_size, &port->lock);
         usb_serial_debug_data(debug, &port->dev, __func__, count, data);
 
         /* set up our urb */
@@ -345,7 +345,7 @@ int usb_serial_generic_write(struct tty_struct *tty,
                 return usb_serial_multi_urb_write(tty, port,
                                                   buf, count);
 
-        count = kfifo_put(port->write_fifo, buf, count);
+        count = kfifo_put_locked(port->write_fifo, buf, count, &port->lock);
         result = usb_serial_generic_write_start(port);
 
         if (result >= 0)
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index 44b72d47fac2..636a4f23445e 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -939,8 +939,7 @@ int usb_serial_probe(struct usb_interface *interface,
                         dev_err(&interface->dev, "No free urbs available\n");
                         goto probe_error;
                 }
-                if (kfifo_alloc(&port->write_fifo, PAGE_SIZE, GFP_KERNEL,
-                        &port->lock))
+                if (kfifo_alloc(port->write_fifo, PAGE_SIZE, GFP_KERNEL))
                         goto probe_error;
                 buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
                 port->bulk_out_size = buffer_size;