linux-kernel - [PATCH 7/9] USB host: make Open Firmware device id constant

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Message-ID: <4B49E597.9070307@freemail.hu>
Date:	Sun, 10 Jan 2010 15:35:03 +0100
From:	Németh Márton <nm127@...email.hu>
To:	Greg Kroah-Hartman <gregkh@...e.de>
CC:	linux-usb@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	Julia Lawall <julia@...u.dk>, cocci@...u.dk
Subject: [PATCH 7/9] USB host: make Open Firmware device id constant

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

The match_table field of the struct of_device_id is constant in <linux/of_platform.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/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
--- a/drivers/usb/host/ehci-ppc-of.c 2009-12-03 04:51:21.000000000 +0100
+++ b/drivers/usb/host/ehci-ppc-of.c 2010-01-08 17:24:21.000000000 +0100
@@ -264,7 +264,7 @@ static int ehci_hcd_ppc_of_shutdown(stru
 }


-static struct of_device_id ehci_hcd_ppc_of_match[] = {
+static const struct of_device_id ehci_hcd_ppc_of_match[] = {
 	{
 		.compatible = "usb-ehci",
 	},
diff -u -p a/drivers/usb/host/fhci-hcd.c b/drivers/usb/host/fhci-hcd.c
--- a/drivers/usb/host/fhci-hcd.c 2009-12-03 04:51:21.000000000 +0100
+++ b/drivers/usb/host/fhci-hcd.c 2010-01-08 17:25:53.000000000 +0100
@@ -804,7 +804,7 @@ static int __devexit of_fhci_remove(stru
 	return fhci_remove(&ofdev->dev);
 }

-static struct of_device_id of_fhci_match[] = {
+static const struct of_device_id of_fhci_match[] = {
 	{ .compatible = "fsl,mpc8323-qe-usb", },
 	{},
 };
diff -u -p a/drivers/usb/host/ohci-ppc-of.c b/drivers/usb/host/ohci-ppc-of.c
--- a/drivers/usb/host/ohci-ppc-of.c 2009-12-03 04:51:21.000000000 +0100
+++ b/drivers/usb/host/ohci-ppc-of.c 2010-01-08 17:28:21.000000000 +0100
@@ -212,7 +212,7 @@ static int ohci_hcd_ppc_of_shutdown(stru
 }


-static struct of_device_id ohci_hcd_ppc_of_match[] = {
+static const struct of_device_id ohci_hcd_ppc_of_match[] = {
 #ifdef CONFIG_USB_OHCI_HCD_PPC_OF_BE
 	{
 		.name = "usb",
diff -u -p a/drivers/usb/host/ehci-xilinx-of.c b/drivers/usb/host/ehci-xilinx-of.c
--- a/drivers/usb/host/ehci-xilinx-of.c 2010-01-07 19:08:47.000000000 +0100
+++ b/drivers/usb/host/ehci-xilinx-of.c 2010-01-08 17:28:35.000000000 +0100
@@ -281,7 +281,7 @@ static int ehci_hcd_xilinx_of_shutdown(s
 }


-static struct of_device_id ehci_hcd_xilinx_of_match[] = {
+static const struct of_device_id ehci_hcd_xilinx_of_match[] = {
 		{.compatible = "xlnx,xps-usb-host-1.00.a",},
 	{},
 };
diff -u -p a/drivers/usb/host/isp1760-if.c b/drivers/usb/host/isp1760-if.c
--- a/drivers/usb/host/isp1760-if.c 2009-12-03 04:51:21.000000000 +0100
+++ b/drivers/usb/host/isp1760-if.c 2010-01-08 17:29:21.000000000 +0100
@@ -109,7 +109,7 @@ static int of_isp1760_remove(struct of_d
 	return 0;
 }

-static struct of_device_id of_isp1760_match[] = {
+static const struct of_device_id of_isp1760_match[] = {
 	{
 		.compatible = "nxp,usb-isp1760",
 	},
--
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