From: K Prateek Nayak Date: Fri, 8 May 2026 05:17:45 +0000 (+0000) Subject: cpufreq/amd-pstate: Allow writes to dynamic_epp when state isn't modified X-Git-Tag: v7.1-rc5~32^2^2~4 X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=c5eed6ddc757e477f52b3d99bfde9e59975c72ca;p=thirdparty%2Fkernel%2Flinux.git cpufreq/amd-pstate: Allow writes to dynamic_epp when state isn't modified 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: e30ca6dd5345 ("cpufreq/amd-pstate: Add dynamic energy performance preference") Reviewed-by: Mario Limonciello Signed-off-by: K Prateek Nayak Link: https://lore.kernel.org/r/20260508051748.10484-4-kprateek.nayak@amd.com Signed-off-by: Mario Limonciello (AMD) --- diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 72514be2f30fb..462ddad7bc79e 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -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;