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Date: Wed, 24 Oct 2012 19:58:16 +0800 From: "hongbo.zhang" <hongbo.zhang@...aro.org> To: linaro-dev@...ts.linaro.org, linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org Cc: patches@...aro.org, linaro-kernel@...ts.linaro.org, STEricsson_nomadik_linux@...t.st.com, kernel@...oocommunity.org, "hongbo.zhang" <hongbo.zhang@...aro.com> Subject: [PATCH V2 2/6] Thermal: make sure cpufreq cooling register after cpufreq driver From: "hongbo.zhang" <hongbo.zhang@...aro.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@...aro.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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