Patchwork 8139too: make PCI device ids constant

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Submitter Németh Márton
Date Jan. 4, 2010, 11:03 p.m.
Message ID <4B4273A6.4020102@freemail.hu>
Download mbox | patch
Permalink /patch/42098/
State Accepted
Delegated to: David Miller
Headers show

Comments

Németh Márton - Jan. 4, 2010, 11:03 p.m.
From: Márton Németh <nm127@freemail.hu>

The id_table field of the struct pci_driver is constant in <linux/pci.h>
so it is worth to make pci_device_id also constant.

The semantic match that finds this kind of pattern is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
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
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David Miller - Jan. 7, 2010, 8:33 a.m.
From: Németh Márton <nm127@freemail.hu>
Date: Tue, 05 Jan 2010 00:03:02 +0100

> From: Márton Németh <nm127@freemail.hu>
> 
> The id_table field of the struct pci_driver is constant in <linux/pci.h>
> so it is worth to make pci_device_id also constant.

Applied to net-next-2.6, thank you.
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Patch

diff -u -p a/drivers/net/pci-skeleton.c b/drivers/net/pci-skeleton.c
--- a/drivers/net/pci-skeleton.c 2009-12-27 12:20:35.000000000 +0100
+++ b/drivers/net/pci-skeleton.c 2010-01-03 21:08:03.000000000 +0100
@@ -211,7 +211,7 @@  static struct {
 };


-static struct pci_device_id netdrv_pci_tbl[] = {
+static const struct pci_device_id netdrv_pci_tbl[] = {
 	{0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
 	{0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, NETDRV_CB },
 	{0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, SMC1211TX },
diff -u -p a/drivers/net/8139too.c b/drivers/net/8139too.c
--- a/drivers/net/8139too.c 2009-12-27 12:20:30.000000000 +0100
+++ b/drivers/net/8139too.c 2010-01-03 21:25:05.000000000 +0100
@@ -231,7 +231,7 @@  static const struct {
 };


-static struct pci_device_id rtl8139_pci_tbl[] = {
+static const struct pci_device_id rtl8139_pci_tbl[] = {
 	{0x10ec, 0x8139, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
 	{0x10ec, 0x8138, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },
 	{0x1113, 0x1211, PCI_ANY_ID, PCI_ANY_ID, 0, 0, RTL8139 },