cpupower: Remove unused pscur variable.

mainline inclusion
from mainline-5.12-rc1-dontuse
commit 1421de79
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4QQWF

--------------------------------

The pscur variable is set but not uused, just remove it.

This may have previsously been set to validate the MSR_AMD_PSTATE_STATUS
MSR. With the addition of the CPUPOWER_CAP_AMD_HW_PSTATE cap flag this
is no longer needed since the cpuid bit to enable this cap flag also
validates that the MSR_AMD_PSTATE_STATUS MSR is present.
Signed-off-by: NNathan Fontenot <nathan.fontenot@amd.com>
Reviewed-by: NRobert Richter <rrichter@amd.com>
Signed-off-by: NShuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Nqinyu <qinyu16@huawei.com>
Reviewed-by: NChao Liu <liuchao173@huawei.com>
Reviewed-by: NXiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>

tools/power/cpupower/utils/helpers/amd.c

@@ -90,7 +90,7 @@ static int get_cof(int family, union core_pstate pstate)
 int decode_pstates(unsigned int cpu, unsigned int cpu_family,
 		   int boost_states, unsigned long *pstates, int *no)
 {
-	int i, psmax, pscur;
+	int i, psmax;
 	union core_pstate pstate;
 	unsigned long long val;
 
@@ -104,13 +104,6 @@ int decode_pstates(unsigned int cpu, unsigned int cpu_family,
 		return -1;
 
 	psmax = (val >> 4) & 0x7;
-
-	if (read_msr(cpu, MSR_AMD_PSTATE_STATUS, &val))
-		return -1;
-
-	pscur = val & 0x7;
-
-	pscur += boost_states;
 	psmax += boost_states;
 	for (i = 0; i <= psmax; i++) {
 		if (i >= MAX_HW_PSTATES) {