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drivers/firmware: const-ify DMI API and internals

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Three main sets of changes:

1) dmi_get_system_info() return value should have been marked const,
   since callers should not be changing that data.

2) const-ify DMI internals, since DMI firmware tables should,
   whenever possible, be marked const to ensure we never ever write to
   that data area.

3) const-ify DMI API, to enable marking tables const where possible
   in low-level drivers.

And if we're really lucky, this might enable some additional
optimizations on the part of the compiler.

The bulk of the changes are #2 and #3, which are interrelated.  #1 could
have been a separate patch, but it was so small compared to the others,
it was easier to roll it into this changeset.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Jeff Garzik 2007-10-03 15:15:40 -04:00
parent bbf25010f1
commit 1855256c49
35 changed files with 103 additions and 97 deletions
Download patch file Download diff file Expand all files Collapse all files

2
drivers/input/misc/wistron_btns.c
View file

@ -247,7 +247,7 @@ static int have_wifi;
static int have_bluetooth;
static int have_leds;
static int __init dmi_matched(struct dmi_system_id *dmi)
static int __init dmi_matched(const struct dmi_system_id *dmi)
{
const struct key_entry *key;

6
drivers/input/mouse/lifebook.c
View file

@ -27,7 +27,7 @@ struct lifebook_data {
static const char *desired_serio_phys;
static int lifebook_set_serio_phys(struct dmi_system_id *d)
static int lifebook_set_serio_phys(const struct dmi_system_id *d)
{
desired_serio_phys = d->driver_data;
return 0;
@ -35,13 +35,13 @@ static int lifebook_set_serio_phys(struct dmi_system_id *d)
static unsigned char lifebook_use_6byte_proto;
static int lifebook_set_6byte_proto(struct dmi_system_id *d)
static int lifebook_set_6byte_proto(const struct dmi_system_id *d)
{
lifebook_use_6byte_proto = 1;
return 0;
}
static struct dmi_system_id lifebook_dmi_table[] = {
static const struct dmi_system_id lifebook_dmi_table[] = {
{
.ident = "FLORA-ie 55mi",
.matches = {

2
drivers/input/mouse/synaptics.c
View file

@ -602,7 +602,7 @@ static int synaptics_reconnect(struct psmouse *psmouse)
#if defined(__i386__)
#include <linux/dmi.h>
static struct dmi_system_id toshiba_dmi_table[] = {
static const struct dmi_system_id toshiba_dmi_table[] = {
{
.ident = "Toshiba Satellite",
.matches = {