USB class: 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/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 95f29a2..5155ff2 100644 (file)
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1489,7 +1489,7 @@ static int acm_reset_resume(struct usb_interface *intf)
  * USB driver structure.
  */
 
-static struct usb_device_id acm_ids[] = {
+static const struct usb_device_id acm_ids[] = {
        /* quirky and broken devices */
        { USB_DEVICE(0x0870, 0x0001), /* Metricom GS Modem */
        .driver_info = NO_UNION_NORMAL, /* has no union descriptor */

diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c
index 3e564bf..18aafcb 100644 (file)
--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -31,7 +31,7 @@
 #define DRIVER_AUTHOR "Oliver Neukum"
 #define DRIVER_DESC "USB Abstract Control Model driver for USB WCM Device Management"
 
-static struct usb_device_id wdm_ids[] = {
+static const struct usb_device_id wdm_ids[] = {
        {
                .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS |
                                 USB_DEVICE_ID_MATCH_INT_SUBCLASS,

diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c
index 9d8ec72..93b5f85 100644 (file)
--- a/drivers/usb/class/usblp.c
+++ b/drivers/usb/class/usblp.c
@@ -1390,7 +1390,7 @@ static int usblp_resume(struct usb_interface *intf)
        return r;
 }
 
-static struct usb_device_id usblp_ids [] = {
+static const struct usb_device_id usblp_ids[] = {
        { USB_DEVICE_INFO(7, 1, 1) },
        { USB_DEVICE_INFO(7, 1, 2) },
        { USB_DEVICE_INFO(7, 1, 3) },

diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c
index 7c5f4e3..8588c09 100644 (file)
--- a/drivers/usb/class/usbtmc.c
+++ b/drivers/usb/class/usbtmc.c
@@ -48,7 +48,7 @@
  */
 #define USBTMC_MAX_READS_TO_CLEAR_BULK_IN      100
 
-static struct usb_device_id usbtmc_devices[] = {
+static const struct usb_device_id usbtmc_devices[] = {
        { USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, 3, 0), },
        { USB_INTERFACE_INFO(USB_CLASS_APP_SPEC, 3, 1), },
        { 0, } /* terminating entry */

diff --git a/drivers/usb/wusbcore/cbaf.c b/drivers/usb/wusbcore/cbaf.c
index 25eae40..51a8e0d 100644 (file)
--- a/drivers/usb/wusbcore/cbaf.c
+++ b/drivers/usb/wusbcore/cbaf.c
@@ -641,7 +641,7 @@ static void cbaf_disconnect(struct usb_interface *iface)
        kzfree(cbaf);
 }
 
-static struct usb_device_id cbaf_id_table[] = {
+static const struct usb_device_id cbaf_id_table[] = {
        { USB_INTERFACE_INFO(0xef, 0x03, 0x01), },
        { },
 };