linux-kernel - Re: [Cocci] [PATCH v13 3/6] clk: Make clk API return per-user struct clk instances

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Message-ID: <54D41DA8.1020309@codeaurora.org>
Date:	Thu, 05 Feb 2015 17:49:28 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Quentin Lambert <lambert.quentin@...il.com>,
	Mike Turquette <mturquette@...aro.org>,
	Julia Lawall <julia.lawall@...6.fr>
CC:	Paul Walmsley <paul@...an.com>,
	Tomeu Vizoso <tomeu.vizoso@...labora.com>,
	Tony Lindgren <tony@...mide.com>, linux-kernel@...r.kernel.org,
	t-kristo@...com, linux-omap@...r.kernel.org, cocci@...teme.lip6.fr,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [Cocci] [PATCH v13 3/6] clk: Make clk API return per-user struct
 clk instances

On 02/05/15 08:02, Quentin Lambert wrote:
> Sorry let me do that properly.
>
> On 05/02/2015 16:45, Quentin Lambert wrote:
>>
>> On 05/02/2015 00:26, Stephen Boyd wrote:
>>>> If you want me to I can enlarge the search to other directories.
>>> Yes please do. And if you could share the coccinelle patch that
>>> would be
>>> great. Thanks.
>>>
>> structclk.cocci is the coccinelle patch
>> structclk-arm.patch is the result I got when applying it to the
>> arch/arm directory
>>
>> Is there anything else I can do to help?
>>
>>
>
> These are the new instances I found by applying the patch to arch/arm
> directory:
>
> ./arch/arm/mach-imx/mach-imx6q.c
> @@ -211,7 +211,6 @@ static void __init imx6q_1588_init(void)
>       * set bit IOMUXC_GPR1[21].  Or the PTP clock must be from pad
>       * (external OSC), and we need to clear the bit.
>       */
>      clksel = ptp_clk == enet_ref ? IMX6Q_GPR1_ENET_CLK_SEL_ANATOP :
>                         IMX6Q_GPR1_ENET_CLK_SEL_PAD;
>      gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
>      if (!IS_ERR(gpr))

This one looks like a real problem and it could probably use a
clk_equal(struct clk *a, struct clk *b) function.

>
> ./arch/arm/mach-shmobile/clock-r8a73a4.c
> @@ -139,7 +139,6 @@ static int pll_set_parent(struct clk *cl
>
>      /* Search the parent */
>      for (i = 0; i < clk->parent_num; i++)
>          if (clk->parent_table[i] == parent)
>              break;
>
>      if (i == clk->parent_num)
>
> ./arch/arm/mach-shmobile/clock-sh7372.c
> @@ -223,7 +223,6 @@ static int pllc2_set_parent(struct clk *
>
>      /* Search the parent */
>      for (i = 0; i < clk->parent_num; i++)
>          if (clk->parent_table[i] == parent)
>              break;
>
>      if (i == clk->parent_num)
>
> ./arch/arm/mach-shmobile/clock-r8a7740.c
> @@ -195,7 +195,6 @@ static int usb24s_set_parent(struct clk
>
>      /* Search the parent */
>      for (i = 0; i < clk->parent_num; i++)
>          if (clk->parent_table[i] == parent)
>              break;
>
>      if (i == clk->parent_num)
>
>
>

I don't think shmobile uses the CCF so this should be safe, but we
should probably fix them up to also use a clk_equal() function that just
does pointer comparisons.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

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