linux-kernel - Re: [PATCH v2 14/16] cpufreq: Add cpufreq driver for Tegra124

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Date:	Wed, 23 Jul 2014 22:17:27 +0300
From:	Tuomas Tynkkynen <ttynkkynen@...dia.com>
To:	Viresh Kumar <viresh.kumar@...aro.org>
CC:	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Peter De Schrijver <pdeschrijver@...dia.com>,
	Prashant Gaikwad <pgaikwad@...dia.com>,
	Mike Turquette <mturquette@...aro.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Paul Walmsley <pwalmsley@...dia.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v2 14/16] cpufreq: Add cpufreq driver for Tegra124



On 23/07/14 19:50, Viresh Kumar wrote:
> On 23 July 2014 17:27, Tuomas Tynkkynen <ttynkkynen@...dia.com> wrote:
>> The platform device is required for the deferred probe that can happen if the
>> DFLL driver hasn't initialized yet, and module_init() callbacks don't seem to
>> respect -EPROBE_DEFER.
> 
> Oh, which call in this file will return EPROBE_DEFER? I couldn't make out
> which one will depend on DFLL driver.
> 

It's this:

+static int tegra124_cpufreq_probe(struct platform_device *pdev)
+{
[...]
+
+	dfll_clk = of_clk_get_by_name(cpu_dev->of_node, "dfll");
+	if (IS_ERR(dfll_clk)) {
+		ret = PTR_ERR(dfll_clk);
+		goto out_put_cpu_clk;
+	}

-- 
nvpublic
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