linux-kernel - [PATCH 1/1 linux-next] cdc-acm: use swap() in acm

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Date:	Mon, 18 May 2015 19:59:37 +0200
From:	Fabian Frederick <fabf@...net.be>
To:	linux-kernel@...r.kernel.org
Cc:	Fabian Frederick <fabf@...net.be>,
	Oliver Neukum <oliver@...kum.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org
Subject: [PATCH 1/1 linux-next] cdc-acm: use swap() in acm_probe()

Use kernel.h macro definition.

Signed-off-by: Fabian Frederick <fabf@...net.be>
---
 drivers/usb/class/cdc-acm.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 5c8f581..8d045be 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1267,12 +1267,9 @@ 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;
 		}
@@ -1301,12 +1298,9 @@ 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");
-- 
2.4.0

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