Messages in this thread Patch in this message | | | From | Lukasz Majewski <> | Subject | [PATCH 5/8] thermal:cpu cooling:tegra: Provide deferred probing for tegra driver | Date | Thu, 13 Nov 2014 18:02:42 +0100 |
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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 <l.majewski@samsung.com> --- drivers/thermal/tegra_soctherm.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/drivers/thermal/tegra_soctherm.c b/drivers/thermal/tegra_soctherm.c index 70f7e9e..9c5aaa4 100644 --- a/drivers/thermal/tegra_soctherm.c +++ b/drivers/thermal/tegra_soctherm.c @@ -26,6 +26,7 @@ #include <linux/platform_device.h> #include <linux/reset.h> #include <linux/thermal.h> +#include <linux/cpufreq.h> #include <soc/tegra/fuse.h> @@ -346,6 +347,12 @@ static int tegra_soctherm_probe(struct platform_device *pdev) const struct tegra_tsensor *tsensors = t124_tsensors; +#ifdef CONFIG_CPU_THERMAL + if (!cpufreq_get_current_driver()) { + dev_dbg(&pdev->dev, "no cpufreq driver!"); + return -EPROBE_DEFER; + } +#endif tegra = devm_kzalloc(&pdev->dev, sizeof(*tegra), GFP_KERNEL); if (!tegra) return -ENOMEM; -- 2.0.0.rc2
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