| Message ID | 20231127111121.400-1-gautham.shenoy@amd.com (mailing list archive) |
|---|---|
| State | Mainlined, archived |
| Headers | show |
| Series | [v2] cpufreq/amd-pstate: Fix the return value of amd_pstate_fast_switch() | expand |
On Mon, Nov 27, 2023 at 12:11 PM Gautham R. Shenoy <gautham.shenoy@amd.com> wrote: > > 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: 4badf2eb1e98 ("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: stable@vger.kernel.org # v6.4+ > Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com> > --- > drivers/cpufreq/amd-pstate.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c > index 9a1e194d5cf8..300f81d36291 100644 > --- a/drivers/cpufreq/amd-pstate.c > +++ b/drivers/cpufreq/amd-pstate.c > @@ -518,7 +518,9 @@ static int amd_pstate_target(struct cpufreq_policy *policy, > static unsigned int amd_pstate_fast_switch(struct cpufreq_policy *policy, > 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, > -- Applied as 6.7-rc material, thanks! BTW, if you are aware of any pending AMD P-state fixes for 6.7, please let me know.
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 9a1e194d5cf8..300f81d36291 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -518,7 +518,9 @@ static int amd_pstate_target(struct cpufreq_policy *policy, static unsigned int amd_pstate_fast_switch(struct cpufreq_policy *policy, 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,
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: 4badf2eb1e98 ("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: stable@vger.kernel.org # v6.4+ Signed-off-by: Gautham R. Shenoy <gautham.shenoy@amd.com> --- drivers/cpufreq/amd-pstate.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)