[PATCH v3] cpufreq: amd-pstate: Fix min_perf assignment in amd_pstate_adjust_perf()

From: Tor Vic
Date: Fri Feb 09 2024 - 10:44:16 EST


In the function amd_pstate_adjust_perf(), the 'min_perf' variable is set
to 'highest_perf' instead of 'lowest_perf'.

Cc: <stable@xxxxxxxxxxxxxxx> # 6.1+
Fixes: 1d215f0319c2 ("cpufreq: amd-pstate: Add fast switch function for AMD P-State")
Reported-by: Oleksandr Natalenko <oleksandr@xxxxxxxxxxxxxx>
Reviewed-by: Perry Yuan <Perry.Yuan@xxxxxxx>
Signed-off-by: Tor Vic <torvic9@xxxxxxxxxxx>
---
v2->v3: Resend with git, misconfigured mail client borked v2
v1->v2: Add Perry's 'Reviewed-by' and 'Cc: stable' tag
---
drivers/cpufreq/amd-pstate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c
index 08e112444c27..aa5e57e27d2b 100644
--- a/drivers/cpufreq/amd-pstate.c
+++ b/drivers/cpufreq/amd-pstate.c
@@ -577,7 +577,7 @@ static void amd_pstate_adjust_perf(unsigned int cpu,
if (target_perf < capacity)
des_perf = DIV_ROUND_UP(cap_perf * target_perf, capacity);

- min_perf = READ_ONCE(cpudata->highest_perf);
+ min_perf = READ_ONCE(cpudata->lowest_perf);
if (_min_perf < capacity)
min_perf = DIV_ROUND_UP(cap_perf * _min_perf, capacity);

--
2.43.0