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| author |   Zhang Rui <rui.zhang@intel.com> | 2009-12-30 15:36:42 +0800 |
|---|---|---|
| committer |   Len Brown <len.brown@intel.com> | 2009-12-30 18:32:01 -0500 |
| commit | d7f0eea9e431e1b8b0742a74db1a9490730b2a25 (patch) | |
| tree | 606342d4ce0085eaf8ef5c3924b70001d2f0eccc /arch/x86 | |
| parent | Linux 2.6.33-rc2 (diff) | |
| download | linux-dev-d7f0eea9e431e1b8b0742a74db1a9490730b2a25.tar.xz linux-dev-d7f0eea9e431e1b8b0742a74db1a9490730b2a25.zip | |
ACPI: introduce kernel parameter acpi_sleep=sci_force_enable
Introduce kernel parameter acpi_sleep=sci_force_enable
some laptop requires SCI_EN being set directly on resume,
or else they hung somewhere in the resume code path.
We already have a blacklist for these laptops but we still need
this option, especially when debugging some suspend/resume problems,
in case there are systems that need this workaround and are not yet
in the blacklist.
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/acpi/sleep.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c index 82e508677b91..f9961034e557 100644 --- a/arch/x86/kernel/acpi/sleep.c +++ b/arch/x86/kernel/acpi/sleep.c @@ -162,6 +162,8 @@ static int __init acpi_sleep_setup(char *str) #endif if (strncmp(str, "old_ordering", 12) == 0) acpi_old_suspend_ordering(); + if (strncmp(str, "sci_force_enable", 16) == 0) + acpi_set_sci_en_on_resume(); str = strchr(str, ','); if (str != NULL) str += strspn(str, ", \t"); |