linux-kernel - Re: [PATCH] mmc: sdhci-tegra: Add #ifdef CONFIG_OF guard for of_find

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Date:	Mon, 03 Oct 2011 10:32:24 +0200
From:	Igor Grinberg <grinberg@...pulab.co.il>
To:	Axel Lin <axel.lin@...il.com>
CC:	linux-kernel@...r.kernel.org, Chris Ball <cjb@...top.org>,
	Olof Johansson <olof@...om.net>,
	Stephen Warren <swarren@...dia.com>, linux-mmc@...r.kernel.org,
	Grant Likely <grant.likely@...retlab.ca>
Subject: Re: [PATCH] mmc: sdhci-tegra: Add #ifdef CONFIG_OF guard for of_find_property

Hi Axel,

On 10/03/11 06:07, Axel Lin wrote:
> I got below build error with "make tegra_defconfig;make"
> Add #ifdef CONFIG_OF guard for of_find_property to fix below build error:
> 
>   CC      drivers/mmc/host/sdhci-tegra.o
> drivers/mmc/host/sdhci-tegra.c: In function 'sdhci_tegra_dt_parse_pdata':
> drivers/mmc/host/sdhci-tegra.c:157: error: implicit declaration of function 'of_find_property'
> make[3]: *** [drivers/mmc/host/sdhci-tegra.o] Error 1
> make[2]: *** [drivers/mmc/host] Error 2
> make[1]: *** [drivers/mmc] Error 2
> make: *** [drivers] Error 2
> 
> Signed-off-by: Axel Lin <axel.lin@...il.com>
> ---
> I got the build error on linux-next (20110930).
> Axel
> 
>  drivers/mmc/host/sdhci-tegra.c |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c
> index 67176afc..3883602 100644
> --- a/drivers/mmc/host/sdhci-tegra.c
> +++ b/drivers/mmc/host/sdhci-tegra.c
> @@ -154,8 +154,11 @@ static struct tegra_sdhci_platform_data * __devinit sdhci_tegra_dt_parse_pdata(
>  	plat->cd_gpio = of_get_named_gpio(np, "cd-gpios", 0);
>  	plat->wp_gpio = of_get_named_gpio(np, "wp-gpios", 0);
>  	plat->power_gpio = of_get_named_gpio(np, "power-gpios", 0);
> +
> +#ifdef CONFIG_OF
>  	if (of_find_property(np, "support-8bit", NULL))
>  		plat->is_8bit = 1;
> +#endif

Shouldn't we add a stub for the of_find_property() method to include/linux/of.h
instead of adding more ifdefs?
Or may be use of_get_property() method instead?

>  
>  	return plat;
>  }

-- 
Regards,
Igor.
--
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