linux-kernel - Re: [PATCH v3 07/10] intel_mid: Added custom device

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Date:	Mon, 14 Oct 2013 09:32:59 -0700
From:	David Cohen <david.a.cohen@...ux.intel.com>
To:	Joe Perches <joe@...ches.com>
CC:	"H. Peter Anvin" <hpa@...or.com>, tglx@...utronix.de,
	Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org,
	x86@...nel.org, platform-driver-x86@...r.kernel.org,
	Kuppuswamy Sathyanarayanan 
	<sathyanarayanan.kuppuswamy@...ux.intel.com>
Subject: Re: [PATCH v3 07/10] intel_mid: Added custom device_handler support

On 10/14/2013 09:16 AM, Joe Perches wrote:
> On Mon, 2013-10-14 at 09:03 -0700, H. Peter Anvin wrote:
>> On 10/11/2013 08:43 PM, David Cohen wrote:
>>>
>>>   	/* MSIC subdevices */
>>> -	{"msic_battery", SFI_DEV_TYPE_IPC, 1, &msic_battery_platform_data},
>>> -	{"msic_gpio", SFI_DEV_TYPE_IPC, 1, &msic_gpio_platform_data},
>>> -	{"msic_audio", SFI_DEV_TYPE_IPC, 1, &msic_audio_platform_data},
>>> -	{"msic_power_btn", SFI_DEV_TYPE_IPC, 1, &msic_power_btn_platform_data},
>>> -	{"msic_ocd", SFI_DEV_TYPE_IPC, 1, &msic_ocd_platform_data},
>>> -	{"msic_thermal", SFI_DEV_TYPE_IPC, 1, &msic_thermal_platform_data},
>>> -
>>> +	{"msic_battery", SFI_DEV_TYPE_IPC, 1, &msic_battery_platform_data,
>>> +					NULL},
>>> +	{"msic_gpio", SFI_DEV_TYPE_IPC, 1, &msic_gpio_platform_data, NULL},
>>> +	{"msic_audio", SFI_DEV_TYPE_IPC, 1, &msic_audio_platform_data, NULL},
>>> +	{"msic_power_btn", SFI_DEV_TYPE_IPC, 1, &msic_power_btn_platform_data,
>>> +					NULL},
>>> +	{"msic_ocd", SFI_DEV_TYPE_IPC, 1, &msic_ocd_platform_data, NULL},
>>> +	{"msic_thermal", SFI_DEV_TYPE_IPC, 1, &msic_thermal_platform_data,
>>> +					NULL},
>>>   	{},
>>>   };
>>>
>>
>> For highly regular arrays like this it is better to keep each line a
>> single line even if it gets a bit too long rather than randomly breaking
>> them.  The alternative is to put every field of every entry on a
>> separate line, but I don't think that is necessary called for here.
>
> True.
>
> Another option is to #define YA macro to produce the
> SFI_DEV_TYPE_IPC, 1, ... NULL that's common to all of them.

Thanks for your feedback. The parameters happen to be similar at this
time, but they won't be after next patches. I believe a macro could 
remove only prefix 'SFI_DEV_TYPE_' and suffix '_platform_data', which
seems enough to reduce line size.

I'll change it in new patch set.

Br, David Cohen

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