Shyam Sundar S K aec8298c09 platform/x86/amd/pmf: Move out of BIOS SMN pair for driver probe
The current SMN index used for the driver probe seems to be meant
for the BIOS pair and there are potential concurrency problems that can
occur with an inopportune SMI.

It is been advised to use SMN_INDEX_0 instead of SMN_INDEX_2, which is
what amd_nb.c provides and this function has protections to ensure that
only one caller can use it at a time.

Fixes: da5ce22df5fe ("platform/x86/amd/pmf: Add support for PMF core layer")
Co-developed-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Patil Rajesh Reddy <Patil.Reddy@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Link: https://lore.kernel.org/r/20230406164807.50969-4-Shyam-sundar.S-k@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2023-04-11 10:37:12 +02:00

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# SPDX-License-Identifier: GPL-2.0-only
#
# AMD PMF Driver
#
config AMD_PMF
tristate "AMD Platform Management Framework"
depends on ACPI && PCI
depends on POWER_SUPPLY
depends on AMD_NB
select ACPI_PLATFORM_PROFILE
help
This driver provides support for the AMD Platform Management Framework.
The goal is to enhance end user experience by making AMD PCs smarter,
quiter, power efficient by adapting to user behavior and environment.
To compile this driver as a module, choose M here: the module will
be called amd_pmf.