tools/power/x86/intel-speed-select: Display error on turbo mode disabled

For Intel SST turbo-freq feature to be enabled, the turbo mode on the
platform must be enabled also. If turbo mode is disabled, display error
while enabling turbo-freq feature.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Link: https://lore.kernel.org/r/20220510023421.3930540-1-srinivas.pandruvada@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

Author: spandruvada

tools/power/x86/intel-speed-select/isst-config.c

@@ -1892,6 +1892,12 @@ static void set_fact_for_cpu(int cpu, void *arg1, void *arg2, void *arg3,
 	int ret;
 	int status = *(int *)arg4;
 
+	if (status && no_turbo()) {
+		isst_display_error_info_message(1, "Turbo mode is disabled", 0, 0);
+		ret = -1;
+		goto disp_results;
+	}
+
 	ret = isst_get_ctdp_levels(cpu, &pkg_dev);
 	if (ret) {
 		isst_display_error_info_message(1, "Failed to get number of levels", 0, 0);