From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lukasz Majewski Subject: [PATCH 4/8] thermal:cpu cooling:spear: Provide deferred probing for spear driver Date: Thu, 13 Nov 2014 18:02:41 +0100 Message-ID: <1415898165-27406-5-git-send-email-l.majewski@samsung.com> References: <1411547232-21493-1-git-send-email-l.majewski@samsung.com> <1415898165-27406-1-git-send-email-l.majewski@samsung.com> Return-path: In-reply-to: <1415898165-27406-1-git-send-email-l.majewski@samsung.com> Sender: linux-kernel-owner@vger.kernel.org To: Eduardo Valentin , Zhang Rui Cc: Ezequiel Garcia , Kuninori Morimoto , Linux PM list , Vincenzo Frascino , Bartlomiej Zolnierkiewicz , Lukasz Majewski , Nobuhiro Iwamatsu , Mikko Perttunen , Stephen Warren , Thierry Reding , Alexandre Courbot , linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, Lukasz Majewski List-Id: linux-tegra@vger.kernel.org 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 --- drivers/thermal/spear_thermal.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/thermal/spear_thermal.c b/drivers/thermal/spear_thermal.c index 1e2193f..fd8fadf5 100644 --- a/drivers/thermal/spear_thermal.c +++ b/drivers/thermal/spear_thermal.c @@ -24,6 +24,7 @@ #include #include #include +#include #define MD_FACTOR 1000 @@ -107,6 +108,12 @@ static int spear_thermal_probe(struct platform_device *pdev) struct resource *res; int ret = 0, val; +#ifdef CONFIG_CPU_THERMAL + if (!cpufreq_get_current_driver()) { + dev_dbg(&pdev->dev, "no cpufreq driver!"); + return -EPROBE_DEFER; + } +#endif if (!np || !of_property_read_u32(np, "st,thermal-flags", &val)) { dev_err(&pdev->dev, "Failed: DT Pdata not passed\n"); return -EINVAL; -- 2.0.0.rc2