/[linux-patches]/genpatches-2.6/trunk/2.6.27/1700_HP-laptop-dmi-quirk-fix.patch
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Sat Nov 8 02:59:18 2008 UTC (11 years, 7 months ago) by mpagano
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HP Laptop dmi quirk fix
1 From: Andreas Herrmann <andreas.herrmann3@amd.com>
2 Date: Wed, 22 Oct 2008 11:08:31 +0000 (+0200)
3 Subject: x86: call dmi-quirks for HP Laptops after early-quirks are executed
4 X-Git-Tag: v2.6.28-rc1~12^2~12
5 X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Ftorvalds%2Flinux-2.6.git;a=commitdiff_plain;h=35af28219e684a36cc8b1ff456c370ce22be157d
6
7 x86: call dmi-quirks for HP Laptops after early-quirks are executed
8
9 Impact: make warning message disappear - functionality unchanged
10
11 Problems with bogus IRQ0 override of those laptops should be fixed
12 with commits
13
14 x86: SB600: skip IRQ0 override if it is not routed to INT2 of IOAPIC
15 x86: SB450: skip IRQ0 override if it is not routed to INT2 of IOAPIC
16
17 that introduce early-quirks based on chipset configuration.
18
19 For further information, see
20 http://bugzilla.kernel.org/show_bug.cgi?id=11516
21
22 Instead of removing the related dmi-quirks completely we'd like to
23 keep them for (at least) one kernel version -- to double-check whether
24 the early-quirks really took effect. But the dmi-quirks need to be
25 called after early-quirks are executed. With this patch calling
26 sequence for dmi-quriks is changed as follows:
27
28 acpi_boot_table_init() (dmi-quirks)
29 ...
30 early_quirks() (detect bogus IRQ0 override)
31 ...
32 acpi_boot_init() (late dmi-quirks and setup IO APIC)
33
34 Note: Plan is to remove the "late dmi-quirks" with next kernel version.
35
36 Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
37 Signed-off-by: Ingo Molnar <mingo@elte.hu>
38 ---
39
40 diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
41 index 0d1c26a..8072edb 100644
42 --- a/arch/x86/kernel/acpi/boot.c
43 +++ b/arch/x86/kernel/acpi/boot.c
44 @@ -1598,6 +1598,11 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = {
45 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"),
46 },
47 },
48 + {}
49 +};
50 +
51 +/* second table for DMI checks that should run after early-quirks */
52 +static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
53 /*
54 * HP laptops which use a DSDT reporting as HP/SB400/10000,
55 * which includes some code which overrides all temperature
56 @@ -1726,6 +1731,9 @@ int __init early_acpi_boot_init(void)
57
58 int __init acpi_boot_init(void)
59 {
60 + /* those are executed after early-quirks are executed */
61 + dmi_check_system(acpi_dmi_table_late);
62 +
63 /*
64 * If acpi_disabled, bail out
65 * One exception: acpi=ht continues far enough to enumerate LAPICs
66

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