From 1855256c497ecfefc730df6032243f26855ce52c Mon Sep 17 00:00:00 2001
From: Jeff Garzik <jeff@garzik.org>
Date: Wed, 3 Oct 2007 15:15:40 -0400
Subject: drivers/firmware: const-ify DMI API and internals
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>
---
drivers/misc/msi-laptop.c | 2 +-
drivers/misc/sony-laptop.c | 4 ++--
drivers/misc/thinkpad_acpi.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
(limited to 'drivers/misc')
diff --git a/drivers/misc/msi-laptop.c b/drivers/misc/msi-laptop.c
index 349be93..83679c7 100644
--- a/drivers/misc/msi-laptop.c
+++ b/drivers/misc/msi-laptop.c
@@ -283,7 +283,7 @@ static struct platform_device *msipf_device;
/* Initialization */
-static int dmi_check_cb(struct dmi_system_id *id)
+static int dmi_check_cb(const struct dmi_system_id *id)
{
printk("msi-laptop: Identified laptop model '%s'.\n", id->ident);
return 0;
diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index d38ddce..e73a71f 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -807,7 +807,7 @@ static struct sony_nc_event *sony_nc_events;
/* Vaio C* --maybe also FE*, N* and AR* ?-- special init sequence
* for Fn keys
*/
-static int sony_nc_C_enable(struct dmi_system_id *id)
+static int sony_nc_C_enable(const struct dmi_system_id *id)
{
int result = 0;
@@ -845,7 +845,7 @@ static struct sony_nc_event sony_C_events[] = {
};
/* SNC-only model map */
-static struct dmi_system_id sony_nc_ids[] = {
+static const struct dmi_system_id sony_nc_ids[] = {
{
.ident = "Sony Vaio FE Series",
.callback = sony_nc_C_enable,
diff --git a/drivers/misc/thinkpad_acpi.c b/drivers/misc/thinkpad_acpi.c
index 0222bba..6c0b2f0 100644
--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -4448,7 +4448,7 @@ static void ibm_exit(struct ibm_struct *ibm)
static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp)
{
- struct dmi_device *dev = NULL;
+ const struct dmi_device *dev = NULL;
char ec_fw_string[18];
if (!tp)
--
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