When CPU freq is used as a thermal zone cooling device, one needs to wait until cpufreq subsystem is properly initialized.
This code is similar to the one already available in imx_thermal.c file. Signed-off-by: Lukasz Majewski <[email protected]> --- drivers/thermal/kirkwood_thermal.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/thermal/kirkwood_thermal.c b/drivers/thermal/kirkwood_thermal.c index 3b034a0..e938291 100644 --- a/drivers/thermal/kirkwood_thermal.c +++ b/drivers/thermal/kirkwood_thermal.c @@ -21,6 +21,7 @@ #include <linux/module.h> #include <linux/platform_device.h> #include <linux/thermal.h> +#include <linux/cpufreq.h> #define KIRKWOOD_THERMAL_VALID_OFFSET 9 #define KIRKWOOD_THERMAL_VALID_MASK 0x1 @@ -75,6 +76,12 @@ static int kirkwood_thermal_probe(struct platform_device *pdev) struct kirkwood_thermal_priv *priv; struct resource *res; +#ifdef CONFIG_CPU_THERMAL + if (!cpufreq_get_current_driver()) { + dev_dbg(&pdev->dev, "no cpufreq driver!"); + return -EPROBE_DEFER; + } +#endif priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; -- 2.0.0.rc2 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
