From: Márton Németh <[email protected]>

The id_table field of the struct usb_device_id is constant in <linux/usb.h>
so it is worth to make ds_id_table 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 <[email protected]>
Cc: Julia Lawall <[email protected]>
Cc: [email protected]
---
diff -u -p a/drivers/w1/masters/ds2490.c b/drivers/w1/masters/ds2490.c
--- a/drivers/w1/masters/ds2490.c 2009-12-03 04:51:21.000000000 +0100
+++ b/drivers/w1/masters/ds2490.c 2010-01-08 07:52:31.000000000 +0100
@@ -170,7 +170,7 @@ struct ds_status

 };

-static struct usb_device_id ds_id_table [] = {
+static const struct usb_device_id ds_id_table[] = {
        { USB_DEVICE(0x04fa, 0x2490) },
        { },
 };
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