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authorAndi Kleen <ak@suse.de>2006-03-25 16:30:19 +0100
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-25 09:10:54 -0800
commitf083a329e63d471a5e9238e837772b1b76c218db (patch)
tree3d0955a4190ca886c3efa2e93e725d843e7d907b /drivers
parente6fc99c6aba0350a3c4c0206b7047d4893491485 (diff)
downloadop-kernel-dev-f083a329e63d471a5e9238e837772b1b76c218db.zip
op-kernel-dev-f083a329e63d471a5e9238e837772b1b76c218db.tar.gz
[PATCH] x86_64: Clean up and tweak ACPI blacklist year code
- Move the core parser into dmi_scan.c. It can be useful for other subsystems too. - Differentiate between field doesn't exist and field is 0 or unparseable. The first case is likely an old BIOS with broken ACPI, the later is likely a slightly buggy BIOS where someone forget to edit the date. Don't blacklist in the later case. Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/acpi/blacklist.c27
1 files changed, 6 insertions, 21 deletions
diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
index 9824f67..f9c972b 100644
--- a/drivers/acpi/blacklist.c
+++ b/drivers/acpi/blacklist.c
@@ -77,28 +77,13 @@ static struct acpi_blacklist_item acpi_blacklist[] __initdata = {
static int __init blacklist_by_year(void)
{
- int year;
- char *s = dmi_get_system_info(DMI_BIOS_DATE);
-
- if (!s)
- return 0;
- if (!*s)
- return 0;
-
- s = strrchr(s, '/');
- if (!s)
+ int year = dmi_get_year(DMI_BIOS_DATE);
+ /* Doesn't exist? Likely an old system */
+ if (year == -1)
+ return 1;
+ /* 0? Likely a buggy new BIOS */
+ if (year == 0)
return 0;
-
- s += 1;
-
- year = simple_strtoul(s, NULL, 0);
-
- if (year < 100) { /* 2-digit year */
- year += 1900;
- if (year < 1996) /* no dates < spec 1.0 */
- year += 100;
- }
-
if (year < CONFIG_ACPI_BLACKLIST_YEAR) {
printk(KERN_ERR PREFIX "BIOS age (%d) fails cutoff (%d), "
"acpi=force is required to enable ACPI\n",
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