cpufreq/amd-pstate: Fix amd_pstate mode switch on shared memory systems

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[ Upstream commit c10e50a469 ]

While switching the driver mode between active and passive, Collaborative
Processor Performance Control (CPPC) is disabled in
amd_pstate_unregister_driver(). But, it is not enabled back while registering
the new driver (passive or active). This leads to the new driver mode not
working correctly, so enable it back in amd_pstate_register_driver().

Fixes: 3ca7bc818d ("cpufreq: amd-pstate: Add guided mode control support via sysfs")
Signed-off-by: Dhananjay Ugwekar <Dhananjay.Ugwekar@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20241004122303.94283-1-Dhananjay.Ugwekar@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Dhananjay Ugwekar 2024-10-04 12:23:04 +00:00 • committed by Greg Kroah-Hartman

parent 49454f0993

commit 8552150e5d

1 changed files with 10 additions and 0 deletions

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drivers/cpufreq/amd-pstate.c

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