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| author | Lukasz Luba <lukasz.luba@arm.com> | 2016-05-31 11:32:02 +0100 |
|---|---|---|
| committer | Zhang Rui <rui.zhang@intel.com> | 2016-06-01 22:21:19 +0800 |
| commit | f840ab18bdf2e415dac21d09fbbbd2873111bd48 (patch) | |
| tree | 41c3ba2ccc87af930cfaa0e2c523a9b118e3747f | |
| parent | 852f42a69b93dc71507adedeed876d57b8c2c2fa (diff) | |
| download | linux-f840ab18bdf2e415dac21d09fbbbd2873111bd48.tar.gz linux-f840ab18bdf2e415dac21d09fbbbd2873111bd48.tar.bz2 linux-f840ab18bdf2e415dac21d09fbbbd2873111bd48.zip | |
thermal: cpu_cooling: fix improper order during initialization
The freq_table array is not populated before calling
thermal_of_cooling_register. The code which populates the freq table was
introduced in commit f6859014.
This should be done before registering new thermal cooling device.
The log shows effects of this wrong decision.
[ 2.172614] cpu cpu1: Failed to get voltage for frequency 1984518656000: -34
[ 2.220863] cpu cpu0: Failed to get voltage for frequency 1984524416000: -34
Cc: <stable@vger.kernel.org> # 3.19+
Fixes: f6859014c7e7 ("thermal: cpu_cooling: Store frequencies in descending order")
Signed-off-by: Lukasz Luba <lukasz.luba@arm.com>
Acked-by: Javi Merino <javi.merino@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
| -rw-r--r-- | drivers/thermal/cpu_cooling.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c index 6ceac4f2d4b2..5b4b47ed948b 100644 --- a/drivers/thermal/cpu_cooling.c +++ b/drivers/thermal/cpu_cooling.c @@ -857,14 +857,6 @@ __cpufreq_cooling_register(struct device_node *np, goto free_power_table; } - snprintf(dev_name, sizeof(dev_name), "thermal-cpufreq-%d", - cpufreq_dev->id); - - cool_dev = thermal_of_cooling_device_register(np, dev_name, cpufreq_dev, - &cpufreq_cooling_ops); - if (IS_ERR(cool_dev)) - goto remove_idr; - /* Fill freq-table in descending order of frequencies */ for (i = 0, freq = -1; i <= cpufreq_dev->max_level; i++) { freq = find_next_max(table, freq); @@ -877,6 +869,14 @@ __cpufreq_cooling_register(struct device_node *np, pr_debug("%s: freq:%u KHz\n", __func__, freq); } + snprintf(dev_name, sizeof(dev_name), "thermal-cpufreq-%d", + cpufreq_dev->id); + + cool_dev = thermal_of_cooling_device_register(np, dev_name, cpufreq_dev, + &cpufreq_cooling_ops); + if (IS_ERR(cool_dev)) + goto remove_idr; + cpufreq_dev->clipped_freq = cpufreq_dev->freq_table[0]; cpufreq_dev->cool_dev = cool_dev; |