diff options
Diffstat (limited to 'drivers/thermal/cpu_cooling.c')
| -rw-r--r-- | drivers/thermal/cpu_cooling.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index a6cb5531403..4246262c4bd 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -174,6 +174,13 @@ static int get_property(unsigned int cpu, unsigned long input, max_level++; } + /* No valid cpu frequency entry */ + if (max_level == 0) + return -EINVAL; + + /* max_level is an index, not a counter */ + max_level--; + /* get max level */ if (property == GET_MAXL) { *output = (unsigned int)max_level; @@ -181,7 +188,7 @@ static int get_property(unsigned int cpu, unsigned long input, } if (property == GET_FREQ) - level = descend ? input : (max_level - input - 1); + level = descend ? input : (max_level - input); for (i = 0, j = 0; table[i].frequency != CPUFREQ_TABLE_END; i++) { /* ignore invalid entry */ @@ -197,7 +204,7 @@ static int get_property(unsigned int cpu, unsigned long input, if (property == GET_LEVEL && (unsigned int)input == freq) { /* get level by frequency */ - *output = descend ? j : (max_level - j - 1); + *output = descend ? j : (max_level - j); return 0; } if (property == GET_FREQ && level == j) { |