cpufreq: amd-pstate-ut: Remove module parameter access

In amd-pstate-ut, shared memory-based systems call
get_shared_mem() as part of amd_pstate_ut_check_enabled()
function. This function was written when CONFIG_X86_AMD_PSTATE
was tristate config and amd_pstate can be built as a module.

Currently CONFIG_X86_AMD_PSTATE is a boolean config and module
parameter shared_mem is removed. But amd-pstate-ut code still
accesses this module parameter. Remove those accesses.

Fixes: 456ca88d8a52 ("cpufreq: amd-pstate: change amd-pstate driver to be built-in type")
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Reviewed-by: Meng Li <li.meng@amd.com>
Reviewed-by: Wyes Karny <wyes.karny@amd.com>
Suggested-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Swapnil Sapkal <swapnil.sapkal@amd.com>
[ rjw: Subject edits ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/drivers/cpufreq/amd-pstate-ut.c b/drivers/cpufreq/amd-pstate-ut.c
index 7f3fe20..cf07ee7 100644 (file)
--- a/drivers/cpufreq/amd-pstate-ut.c
+++ b/drivers/cpufreq/amd-pstate-ut.c
@@ -64,27 +64,9 @@ static struct amd_pstate_ut_struct amd_pstate_ut_cases[] = {
 static bool get_shared_mem(void)
 {
        bool result = false;
-       char path[] = "/sys/module/amd_pstate/parameters/shared_mem";
-       char buf[5] = {0};
-       struct file *filp = NULL;
-       loff_t pos = 0;
-       ssize_t ret;
-
-       if (!boot_cpu_has(X86_FEATURE_CPPC)) {
-               filp = filp_open(path, O_RDONLY, 0);
-               if (IS_ERR(filp))
-                       pr_err("%s unable to open %s file!\n", __func__, path);
-               else {
-                       ret = kernel_read(filp, &buf, sizeof(buf), &pos);
-                       if (ret < 0)
-                               pr_err("%s read %s file fail ret=%ld!\n",
-                                       __func__, path, (long)ret);
-                       filp_close(filp, NULL);
-               }
 
-               if ('Y' == *buf)
-                       result = true;
-       }
+       if (!boot_cpu_has(X86_FEATURE_CPPC))
+               result = true;
 
        return result;
 }