cdc-acm: use swap() in acm_probe()

Use kernel.h macro definition.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Acked-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 8 deletions

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 877b637e7f7b..eb22a0608033 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1263,12 +1263,9 @@ skip_normal_probe:
                                                 != CDC_DATA_INTERFACE_TYPE) {
                 if (control_interface->cur_altsetting->desc.bInterfaceClass
                                                 == CDC_DATA_INTERFACE_TYPE) {
-                        struct usb_interface *t;
                         dev_dbg(&intf->dev,
                                 "Your device has switched interfaces.\n");
-                        t = control_interface;
-                        control_interface = data_interface;
-                        data_interface = t;
+                        swap(control_interface, data_interface);
                 } else {
                         return -EINVAL;
                 }
@@ -1297,12 +1294,9 @@ skip_normal_probe:
         /* workaround for switched endpoints */
         if (!usb_endpoint_dir_in(epread)) {
                 /* descriptors are swapped */
-                struct usb_endpoint_descriptor *t;
                 dev_dbg(&intf->dev,
                         "The data interface has switched endpoints\n");
-                t = epread;
-                epread = epwrite;
-                epwrite = t;
+                swap(epread, epwrite);
         }
 made_compressed_probe:
         dev_dbg(&intf->dev, "interfaces are valid\n");