From: Németh Márton <nm127@freemail.hu>
Date: Sun, 10 Jan 2010 14:33:33 +0000 (+0100)
Subject: USB skeleton: make USB device id constant
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=1bd4f29d0af5b4b1c022d8fded14665dd5932905;p=openwrt%2Fstaging%2Fblogic.git

USB skeleton: make USB device id constant

The id_table field of the struct usb_device_id is constant in <linux/usb.h>
so it is worth to make the initialization data also constant.

The semantic match that finds this kind of pattern is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
disable decl_init,const_decl_init;
identifier I1, I2, x;
@@
	struct I1 {
	  ...
	  const struct I2 *x;
	  ...
	};
@s@
identifier r.I1, y;
identifier r.x, E;
@@
	struct I1 y = {
	  .x = E,
	};
@c@
identifier r.I2;
identifier s.E;
@@
	const struct I2 E[] = ... ;
@depends on !c@
identifier r.I2;
identifier s.E;
@@
+	const
	struct I2 E[] = ...;
// </smpl>

Signed-off-by: Németh Márton <nm127@freemail.hu>
Cc: Julia Lawall <julia@diku.dk>
Cc: cocci@diku.dk
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c
index b1e579c5c97c..61522787f39c 100644
--- a/drivers/usb/usb-skeleton.c
+++ b/drivers/usb/usb-skeleton.c
@@ -28,7 +28,7 @@
 #define USB_SKEL_PRODUCT_ID	0xfff0
 
 /* table of devices that work with this driver */
-static struct usb_device_id skel_table[] = {
+static const struct usb_device_id skel_table[] = {
 	{ USB_DEVICE(USB_SKEL_VENDOR_ID, USB_SKEL_PRODUCT_ID) },
 	{ }					/* Terminating entry */
 };