[U-Boot] [PATCH 1/3] spl: mmc: Fix compiler warning with CONFIG_DM_MMC

[Nikita Kiryanov <nikita@compulab.co.il>]

Hi Simon,

On Mon, Nov 30, 2015 at 10:19:06AM -0700, Simon Glass wrote:
> Since commit 4188ba3 we get the following warning on rockchip boards:
> 
> common/spl/spl_mmc.c:111:10: error: 'mmc' undeclared (first use in this function)
> 
> Correct this by move the variable init earlier.

This looks suspicious. If the problem is that the variable is
undeclared, the only way to fix it is to declare the variable, which is
not what this patch does. I would expect this error to persist with
the patch applied. Also, mmc is clearly declared in the function
parameter list. It sounds to me like the source of the compile error is
somewhere earlier in the code.

> 
> Signed-off-by: Simon Glass <sjg@chromium.org>
> ---
> 
>  common/spl/spl_mmc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/common/spl/spl_mmc.c b/common/spl/spl_mmc.c
> index b3c2c64..9df4786 100644
> --- a/common/spl/spl_mmc.c
> +++ b/common/spl/spl_mmc.c
> @@ -84,6 +84,7 @@ static int spl_mmc_find_device(struct mmc **mmc, u32 boot_device)
>  	struct udevice *dev;
>  	int err, mmc_dev;
>  
> +	*mmc = NULL;
>  	mmc_dev = spl_mmc_get_device_index(boot_device);
>  	if (mmc_dev < 0)
>  		return mmc_dev;
> @@ -104,7 +105,6 @@ static int spl_mmc_find_device(struct mmc **mmc, u32 boot_device)
>  		return err;
>  	}
>  
> -	*mmc = NULL;
>  	*mmc = mmc_get_mmc_dev(dev);
>  	return *mmc != NULL ? 0 : -ENODEV;
>  }
> -- 
> 2.6.0.rc2.230.g3dd15c0
>