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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
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4
drivers/ata/ata_piix.c
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@@ -919,7 +919,7 @@ static void ich_set_dmamode (struct ata_port *ap, struct ata_device *adev)
#ifdef CONFIG_PM
static int piix_broken_suspend(void)
{
static struct dmi_system_id sysids[] = {
static const struct dmi_system_id sysids[] = {
{
.ident = "TECRA M3",
.matches = {
@@ -1183,7 +1183,7 @@ static void __devinit piix_init_sata_map(struct pci_dev *pdev,
static void piix_iocfg_bit18_quirk(struct pci_dev *pdev)
{
static struct dmi_system_id sysids[] = {
static const struct dmi_system_id sysids[] = {
{
/* Clevo M570U sets IOCFG bit 18 if the cdrom
* isn't used to boot the system which