cpufreq/amd-pstate: Call cppc_set_auto_sel() only for online CPUs

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[ Upstream commit bb31fef0d0 ]

amd_pstate_change_mode_without_dvr_change() calls cppc_set_auto_sel()
for all the present CPUs.

However, this callpath eventually calls cppc_set_reg_val() which
accesses the per-cpu cpc_desc_ptr object. This object is initialized
only for online CPUs via acpi_soft_cpu_online() -->
__acpi_processor_start() --> acpi_cppc_processor_probe().

Hence, restrict calling cppc_set_auto_sel() to only the online CPUs.

Fixes: 3ca7bc818d ("cpufreq: amd-pstate: Add guided mode control support via sysfs")
Suggested-by: Mario Limonciello (AMD) (kernel.org) <superm1@kernel.org>
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Gautham R. Shenoy 2025-11-07 13:11:45 +05:30 • committed by Greg Kroah-Hartman

parent 90138ed922

commit 37d511e849

1 changed files with 1 additions and 1 deletions

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drivers/cpufreq/amd-pstate.c

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