linux-kernel - Re: [PATCH 1/2] cpufreq: exynos4x12: Use the common clock framework to set APLL clock rate

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Date:	Wed, 25 Sep 2013 17:05:11 +0530
From:	Sachin Kamat <sachin.kamat@...aro.org>
To:	Lukasz Majewski <l.majewski@...sung.com>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	Lukasz Majewski <l.majewski@...ess.pl>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Tomasz Figa <t.figa@...sung.com>,
	Myungjoo Ham <myungjoo.ham@...sung.com>,
	Kukjin Kim <kgene@...nel.org>,
	Kukjin Kim <kgene.kim@...sung.com>,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>
Subject: Re: [PATCH 1/2] cpufreq: exynos4x12: Use the common clock framework
 to set APLL clock rate

Hi Lukasz,

On 25 September 2013 16:52, Lukasz Majewski <l.majewski@...sung.com> wrote:
>
>  static void exynos4x12_set_apll(unsigned int index)
>  {
> -       unsigned int tmp, pdiv;
> +       unsigned int tmp, freq = apll_freq_4x12[index].freq;

nit: It is better to put the 'freq' assignment on a new line.

>
> -       /* 1. MUX_CORE_SEL = MPLL, ARMCLK uses MPLL for lock time */
> +       /* MUX_CORE_SEL = MPLL, ARMCLK uses MPLL for lock time */
>         clk_set_parent(moutcore, mout_mpll);
>
>         do {
> @@ -140,24 +140,9 @@ static void exynos4x12_set_apll(unsigned int index)
>                 tmp &= 0x7;
>         } while (tmp != 0x2);
>
> -       /* 2. Set APLL Lock time */
> -       pdiv = ((apll_freq_4x12[index].mps >> 8) & 0x3f);
> +       clk_set_rate(mout_apll, freq * 1000);

Don't we need to check the return value of this?

Same comments for the second patch too.

-- 
With warm regards,
Sachin
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