From 0ca0d7b4d7ecc0d072ec97e6ae51797830189b3c Mon Sep 17 00:00:00 2001 From: Peter De Schrijver Date: Tue, 11 Sep 2012 17:27:51 +0300 Subject: cpuquiet: balanced governor requires cpufreq The balanced governor relies on cpufreq for some of its decisions. Fail initialization if there are no cpufreq OPP tables available. Change-Id: I5d64215d56f50d5df52c1433208b1eb40440c812 Signed-off-by: Peter De Schrijver Reviewed-on: http://git-master/r/131437 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Peter Boonstoppel Reviewed-by: Juha Tukkinen Rebase-Id: R03bb471218a088a816a67232861759cba2b91f38 --- drivers/cpuquiet/governors/balanced.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/cpuquiet') diff --git a/drivers/cpuquiet/governors/balanced.c b/drivers/cpuquiet/governors/balanced.c index 86a012a5ace5..f187206ef1c4 100644 --- a/drivers/cpuquiet/governors/balanced.c +++ b/drivers/cpuquiet/governors/balanced.c @@ -511,8 +511,14 @@ static int balanced_start(void) down_delay = msecs_to_jiffies(2000); table = cpufreq_frequency_get_table(0); + if (!table) + return -EINVAL; + for (count = 0; table[count].frequency != CPUFREQ_TABLE_END; count++); + if (count < 4) + return -EINVAL; + idle_top_freq = table[(count / 2) - 1].frequency; idle_bottom_freq = table[(count / 2) - 2].frequency; -- cgit v1.2.3