tools: cpupower: fix wrong err msg not supported vs not available

idlestates in sysfs are counted from 0.

This fixes a wrong error message.
Current behavior on a machine with 4 sleep states is:

cpupower idle-set -e 4
Idlestate 4 enabled on CPU 0

-----Wrong---------------------
cpupower idle-set -e 5
Idlestate enabling not supported by kernel
-----Must and now will be -----
cpupower idle-set -e 5
Idlestate 6 not available on CPU 0
-------------------------------

cpupower idle-set -e 6
Idlestate 6 not available on CPU 0

Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

diff --git a/tools/power/cpupower/utils/helpers/sysfs.c b/tools/power/cpupower/utils/helpers/sysfs.c
index 5cdc600..851c7a1 100644 (file)
--- a/tools/power/cpupower/utils/helpers/sysfs.c
+++ b/tools/power/cpupower/utils/helpers/sysfs.c
@@ -278,7 +278,7 @@ static char *sysfs_idlestate_get_one_string(unsigned int cpu,
 int sysfs_is_idlestate_disabled(unsigned int cpu,
                                unsigned int idlestate)
 {
-       if (sysfs_get_idlestate_count(cpu) < idlestate)
+       if (sysfs_get_idlestate_count(cpu) <= idlestate)
                return -1;
 
        if (!sysfs_idlestate_file_exists(cpu, idlestate,
@@ -303,7 +303,7 @@ int sysfs_idlestate_disable(unsigned int cpu,
        char value[SYSFS_PATH_MAX];
        int bytes_written;
 
-       if (sysfs_get_idlestate_count(cpu) < idlestate)
+       if (sysfs_get_idlestate_count(cpu) <= idlestate)
                return -1;
 
        if (!sysfs_idlestate_file_exists(cpu, idlestate,