lkml.org 
[lkml]   [2012]   [Oct]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH V2 2/6] Thermal: make sure cpufreq cooling register after cpufreq driver
Date
From: "hongbo.zhang" <hongbo.zhang@linaro.com>

The cpufreq works as a cooling device, so the cooling layer should check if the
cpufreq driver is initialized or not.

Signed-off-by: hongbo.zhang <hongbo.zhang@linaro.com>
---
drivers/thermal/cpu_cooling.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/thermal/cpu_cooling.c b/drivers/thermal/cpu_cooling.c
index b6b4c2a..7519a0b 100644
--- a/drivers/thermal/cpu_cooling.c
+++ b/drivers/thermal/cpu_cooling.c
@@ -354,6 +354,10 @@ struct thermal_cooling_device *cpufreq_cooling_register(
int ret = 0, i;
struct cpufreq_policy policy;

+ /* make sure cpufreq driver has been initialized */
+ if (!cpufreq_frequency_get_table(cpumask_any(clip_cpus)))
+ return ERR_PTR(-EPROBE_DEFER);
+
list_for_each_entry(cpufreq_dev, &cooling_cpufreq_list, node)
cpufreq_dev_count++;

--
1.7.11.3


\
 
 \ /
  Last update: 2012-10-24 14:41    [W:0.324 / U:1.000 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site