From: "Németh Márton" <nm127@freemail.hu>
To: Greg Kroah-Hartman <gregkh@suse.de>
Cc: linux-usb@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
Julia Lawall <julia@diku.dk>,
cocci@diku.dk
Subject: [PATCH 6/9] USB hub: make USB device id constant
Date: Sun, 10 Jan 2010 15:34:53 +0100 [thread overview]
Message-ID: <4B49E58D.3010308@freemail.hu> (raw)
From: Márton Németh <nm127@freemail.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@freemail.hu>
Cc: Julia Lawall <julia@diku.dk>
Cc: cocci@diku.dk
---
diff -u -p a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
--- a/drivers/usb/core/hub.c 2010-01-07 19:08:47.000000000 +0100
+++ b/drivers/usb/core/hub.c 2010-01-08 17:20:19.000000000 +0100
@@ -3442,7 +3442,7 @@ static int hub_thread(void *__unused)
return 0;
}
-static struct usb_device_id hub_id_table [] = {
+static const struct usb_device_id hub_id_table[] = {
{ .match_flags = USB_DEVICE_ID_MATCH_DEV_CLASS,
.bDeviceClass = USB_CLASS_HUB},
{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
reply other threads:[~2010-01-10 14:35 UTC|newest]
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