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

From: [email-masked] (Stephen Boyd)
Date: Thu, 12 Mar 2015 12:43:40 -0700

On 03/12/15 10:20, Sebastian Andrzej Siewior wrote:
> On 2015-02-17 14:01:04 [-0800], Stephen Boyd wrote:
>> diff = 
>> --- arch/arm/mach-imx/mach-imx6q.c
>> +++ /tmp/cocci-output-11792-b62223-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))
> Any idea how to do the comparison here? Or should we rely that the bootloader
> sets this properly (it managed already to select a frequency)? The phy has no
> clock node in current DT's so we can check this.
>

This has been fixed by adding a clk_is_match() helper and using that to
compare instead of comparing raw pointers. It would be nice if we could
replace the patch with something else that doesn't require this helper
though. It looks like this is static board configuration, so I wonder
why we didn't just have a DT property that indicates how the gpr should
be configured for this particular board.

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