| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.17 178/225] Revert "ACPI: processor: idle: fix lockup regression on 32-bit ThinkPad T40" | Date | Wed, 4 May 2022 18:46:56 +0200 |
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From: Ville Syrjälä <ville.syrjala@linux.intel.com>
commit 20e582e16af24b074e583f9551fad557882a3c9d upstream.
This reverts commit bfe55a1f7fd6bfede16078bf04c6250fbca11588.
This was presumably misdiagnosed as an inability to use C3 at all when I suspect the real problem is just misconfiguration of C3 vs. ARB_DIS.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Cc: 5.16+ <stable@vger.kernel.org> # 5.16+ Tested-by: Woody Suwalski <wsuwalski@gmail.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/acpi/processor_idle.c | 5 ----- 1 file changed, 5 deletions(-)
--- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -96,11 +96,6 @@ static const struct dmi_system_id proces DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK Computer Inc."), DMI_MATCH(DMI_PRODUCT_NAME,"L8400B series Notebook PC")}, (void *)1}, - /* T40 can not handle C3 idle state */ - { set_max_cstate, "IBM ThinkPad T40", { - DMI_MATCH(DMI_SYS_VENDOR, "IBM"), - DMI_MATCH(DMI_PRODUCT_NAME, "23737CU")}, - (void *)2}, {}, };
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