OrgACRN
/
acrn-kernel
mirror of https://github.com/projectacrn/acrn-kernel.git
1
0
Fork 0
Code Issues Releases Wiki Activity

cpufreq/amd-pstate: Fix the return value of amd_pstate_fast_switch() 

commit bb87be267b8ee9b40917fb5bf51be5ddb33c37c2 upstream.

cpufreq_driver->fast_switch() callback expects a frequency as a return
value. amd_pstate_fast_switch() was returning the return value of
amd_pstate_update_freq(), which only indicates a success or failure.

Fix this by making amd_pstate_fast_switch() return the target_freq
when the call to amd_pstate_update_freq() is successful, and return
the current frequency from policy->cur when the call to
amd_pstate_update_freq() is unsuccessful.

Fixes: 4badf2eb1e ("cpufreq: amd-pstate: Add ->fast_switch() callback")
Acked-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Reviewed-by: Perry Yuan <perry.yuan@amd.com>
Cc: 6.4+ <stable@vger.kernel.org> # v6.4+
Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Gautham R. Shenoy 2023-11-27 16:41:21 +05:30 committed by Greg Kroah-Hartman
parent 9d4c721c18
commit 4da1556996
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/cpufreq/amd-pstate.c
View File

@ -296,7 +296,9 @@ static int amd_pstate_target(struct cpufreq_policy *policy,
static unsigned int amd_pstate_fast_switch(struct cpufreq_policy *policy, static unsigned int amd_pstate_fast_switch(struct cpufreq_policy *policy,
unsigned int target_freq) unsigned int target_freq)
{ {
return amd_pstate_update_freq(policy, target_freq, true); if (!amd_pstate_update_freq(policy, target_freq, true))
return target_freq;
return policy->cur;
} }
static void amd_pstate_adjust_perf(unsigned int cpu, static void amd_pstate_adjust_perf(unsigned int cpu,