diff options
Diffstat (limited to 'drivers/devfreq')
-rw-r--r-- | drivers/devfreq/devfreq.c | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c index a0b2f7e0eedb..2042ec3656ba 100644 --- a/drivers/devfreq/devfreq.c +++ b/drivers/devfreq/devfreq.c | |||
@@ -91,26 +91,35 @@ static int devfreq_get_freq_level(struct devfreq *devfreq, unsigned long freq) | |||
91 | */ | 91 | */ |
92 | static int devfreq_update_status(struct devfreq *devfreq, unsigned long freq) | 92 | static int devfreq_update_status(struct devfreq *devfreq, unsigned long freq) |
93 | { | 93 | { |
94 | int lev, prev_lev; | 94 | int lev, prev_lev, ret = 0; |
95 | unsigned long cur_time; | 95 | unsigned long cur_time; |
96 | 96 | ||
97 | lev = devfreq_get_freq_level(devfreq, freq); | ||
98 | if (lev < 0) | ||
99 | return lev; | ||
100 | |||
101 | cur_time = jiffies; | 97 | cur_time = jiffies; |
102 | devfreq->time_in_state[lev] += | 98 | |
99 | prev_lev = devfreq_get_freq_level(devfreq, devfreq->previous_freq); | ||
100 | if (prev_lev < 0) { | ||
101 | ret = prev_lev; | ||
102 | goto out; | ||
103 | } | ||
104 | |||
105 | devfreq->time_in_state[prev_lev] += | ||
103 | cur_time - devfreq->last_stat_updated; | 106 | cur_time - devfreq->last_stat_updated; |
104 | if (freq != devfreq->previous_freq) { | 107 | |
105 | prev_lev = devfreq_get_freq_level(devfreq, | 108 | lev = devfreq_get_freq_level(devfreq, freq); |
106 | devfreq->previous_freq); | 109 | if (lev < 0) { |
110 | ret = lev; | ||
111 | goto out; | ||
112 | } | ||
113 | |||
114 | if (lev != prev_lev) { | ||
107 | devfreq->trans_table[(prev_lev * | 115 | devfreq->trans_table[(prev_lev * |
108 | devfreq->profile->max_state) + lev]++; | 116 | devfreq->profile->max_state) + lev]++; |
109 | devfreq->total_trans++; | 117 | devfreq->total_trans++; |
110 | } | 118 | } |
111 | devfreq->last_stat_updated = cur_time; | ||
112 | 119 | ||
113 | return 0; | 120 | out: |
121 | devfreq->last_stat_updated = cur_time; | ||
122 | return ret; | ||
114 | } | 123 | } |
115 | 124 | ||
116 | /** | 125 | /** |