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cpufreq/amd-pstate: Allow writes to dynamic_epp when state isn't modified

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Writing the current "dynamic_epp" state to sysfs fails with -EINVAL even
though the desired result was achieved. Allow writes to "dynamic_epp"
that does not modify the state.

Fixes: e30ca6dd53 ("cpufreq/amd-pstate: Add dynamic energy performance preference")
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
Link: https://lore.kernel.org/r/20260508051748.10484-4-kprateek.nayak@amd.com
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
This commit is contained in:
K Prateek Nayak 2026-05-08 05:17:45 +00:00 committed by Mario Limonciello (AMD)
parent 87d2a8dec0
commit c5eed6ddc7
1 changed files with 2 additions and 1 deletions
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3
drivers/cpufreq/amd-pstate.c
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@ -1832,8 +1832,9 @@ static ssize_t dynamic_epp_store(struct device *a, struct device_attribute *b,
return -EINVAL;
}
/* Nothing to do */
if (dynamic_epp == enabled)
return -EINVAL;
return count;
/* reinitialize with desired dynamic EPP value */
dynamic_epp = enabled;