linux-kernel - Re: [PATCH v2 2/2] mmc, sdhci, bcm-kona, LLVMLinux: Remove use of _

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Message-ID: <54230B9C.9090703@converseincode.com>
Date:	Wed, 24 Sep 2014 11:21:16 -0700
From:	Behan Webster <behanw@...verseincode.com>
To:	Arnd Bergmann <arnd@...db.de>
CC:	bcm@...thebug.org, chris@...ntf.net, gnurou@...il.com,
	linus.walleij@...aro.org, mporter@...aro.org,
	ulf.hansson@...aro.org, bcm-kernel-feedback-list@...adcom.com,
	linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-mmc@...r.kernel.org, rjui@...adcom.com,
	linus.walleij@...aro.org
Subject: Re: [PATCH v2 2/2] mmc, sdhci, bcm-kona, LLVMLinux: Remove use of
 __initconst

On 09/24/14 02:22, Arnd Bergmann wrote:
> On Tuesday 23 September 2014 15:55:08 behanw@...verseincode.com wrote:
>> --- a/drivers/mmc/host/sdhci-bcm-kona.c
>> +++ b/drivers/mmc/host/sdhci-bcm-kona.c
>> @@ -225,7 +225,7 @@ static struct sdhci_pltfm_data sdhci_pltfm_data_kona = {
>>                  SDHCI_QUIRK_CAP_CLOCK_BASE_BROKEN,
>>   };
>>   
>> -static struct __initconst of_device_id sdhci_bcm_kona_of_match[] = {
>> +static struct of_device_id const sdhci_bcm_kona_of_match[] = {
>>          { .compatible = "brcm,kona-sdhci"},
>>          { .compatible = "bcm,kona-sdhci"}, /* deprecated name */
>>          {}
>>
> Sorry for giving you trouble over such a simple patch (especially
> one that I have acked already), but I just noticed that this is
> not following the common style we use in the kernel.
It's all good. It's not like you haven't saved me a tonne of time 
already! :)

> Almost everywhere in Linux, we use
>
> static const struct of_device_id sdhci_bcm_kona_of_match[] = {
>
> not
>
> static struct of_device_id const sdhci_bcm_kona_of_match[] = {
True enough. I put the const where I did to be in keeping with the 
intent of __initconst, making the array const instead of the contained type.

> AFAICT they behave in identical ways,
Indeed. For C in both cases the resulting array of struct of_device_id 
ends up in .rodata, so functionally equivalent.

>   but the first one seems
> easier to read for someone familiar with kernel code.
No worries. Happy to post a v3.

Linus Walleij: Would you like me to respin the "gpio, bcm-kona, 
LLVMLinux: Remove use of __initconst" patch as well?

Behan

-- 
Behan Webster
behanw@...verseincode.com

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