linux-kernel - [PATCH] uwb: make USB device id constant

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Date:	Tue, 12 Jan 2010 08:49:14 +0100
From:	Németh Márton <nm127@...email.hu>
To:	David Vrabel <david.vrabel@....com>
CC:	linux-usb@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Julia Lawall <julia@...u.dk>, cocci@...u.dk
Subject: [PATCH] uwb: make USB device id constant

From: Márton Németh <nm127@...email.hu>

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: Márton Németh <nm127@...email.hu>
Cc: Julia Lawall <julia@...u.dk>
Cc: cocci@...u.dk
---
diff -u -p a/drivers/uwb/hwa-rc.c b/drivers/uwb/hwa-rc.c
--- a/drivers/uwb/hwa-rc.c 2009-12-03 04:51:21.000000000 +0100
+++ b/drivers/uwb/hwa-rc.c 2010-01-08 11:17:49.000000000 +0100
@@ -891,7 +891,7 @@ static int hwarc_post_reset(struct usb_i
 }

 /** USB device ID's that we handle */
-static struct usb_device_id hwarc_id_table[] = {
+static const struct usb_device_id hwarc_id_table[] = {
 	/* D-Link DUB-1210 */
 	{ USB_DEVICE_AND_INTERFACE_INFO(0x07d1, 0x3d02, 0xe0, 0x01, 0x02),
 	  .driver_info = WUSB_QUIRK_WHCI_CMD_EVT },
diff -u -p a/drivers/uwb/i1480/dfu/usb.c b/drivers/uwb/i1480/dfu/usb.c
--- a/drivers/uwb/i1480/dfu/usb.c 2010-01-07 19:08:47.000000000 +0100
+++ b/drivers/uwb/i1480/dfu/usb.c 2010-01-08 11:18:26.000000000 +0100
@@ -430,7 +430,7 @@ error:


 /** USB device ID's that we handle */
-static struct usb_device_id i1480_usb_id_table[] = {
+static const struct usb_device_id i1480_usb_id_table[] = {
 	i1480_USB_DEV(0x8086, 0xdf3b),
 	i1480_USB_DEV(0x15a9, 0x0005),
 	i1480_USB_DEV(0x07d1, 0x3802),
--
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