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Date: Wed, 2 Jul 2014 11:25:38 +0530 From: Viresh Kumar <viresh.kumar@...aro.org> To: Shawn Guo <shawn.guo@...aro.org> Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>, Lists linaro-kernel <linaro-kernel@...ts.linaro.org>, "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Arvind Chauhan <arvind.chauhan@....com>, Stephen Boyd <sboyd@...eaurora.org>, linux-arm-msm@...r.kernel.org, Sachin Kamat <spk.linux@...il.com>, Thomas P Abraham <thomas.ab@...sung.com>, Nishanth Menon <nm@...com>, Tomasz Figa <t.figa@...sung.com> Subject: Re: [PATCH 06/14] cpufreq: cpu0: defer probe if clock isn't registered yet On 2 July 2014 11:23, Shawn Guo <shawn.guo@...aro.org> wrote: > On Tue, Jul 01, 2014 at 10:02:35PM +0530, Viresh Kumar wrote: >> diff --git a/drivers/cpufreq/cpufreq-cpu0.c b/drivers/cpufreq/cpufreq-cpu0.c >> index 4273a5f..b5b8e1c 100644 >> --- a/drivers/cpufreq/cpufreq-cpu0.c >> +++ b/drivers/cpufreq/cpufreq-cpu0.c >> @@ -150,8 +150,17 @@ static int cpu0_cpufreq_probe(struct platform_device *pdev) >> >> cpu_clk = clk_get(cpu_dev, NULL); >> if (IS_ERR(cpu_clk)) { >> - ret = PTR_ERR(cpu_clk); > > If you keep this ... > >> - pr_err("failed to get cpu0 clock: %d\n", ret); >> + /* >> + * If cpu's clk node is present, but clock is not yet >> + * registered, we should try defering probe. >> + */ >> + if (PTR_ERR(cpu_clk) == -EPROBE_DEFER) { > > ... you can use 'ret' here ... > >> + dev_err(cpu_dev, "cpu0 clock not ready, retry\n"); >> + ret = -EPROBE_DEFER; > > ... this can be saved ... > >> + } else { >> + ret = PTR_ERR(cpu_clk); > > ... and this as well. All accepted. Thanks. -- 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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