[U-Boot] [PATCH] block: Add SPL_BLOCK_CACHE and default n

[Tom Rini]

On Sat, Jun 09, 2018 at 05:55:11PM -0500, Adam Ford wrote:

> When enabling BLOCK_CACHE on devices with limited RAM during SPL,
> some devices may not boot.  This creates an option to enable
> block caching in SPL by defaults off.  It is dependent on BLOCK_CACHE
> and SPL_BLK
> 
> Fixes: 46960ad6d09b ("block: Have BLOCK_CACHE default to y in some cases")
> 
> Signed-off-by: Adam Ford <aford173 at gmail.com>
> --
> 
> V2: Clean up macros and ifdefs
[snip]
> diff --git a/include/blk.h b/include/blk.h
> index fc0c239e46..bd90e39932 100644
> --- a/include/blk.h
> +++ b/include/blk.h
> @@ -111,7 +111,8 @@ struct blk_desc {
>  #define PAD_TO_BLOCKSIZE(size, blk_desc) \
>  	(PAD_SIZE(size, blk_desc->blksz))
>  
> -#ifdef CONFIG_BLOCK_CACHE
> +#if (CONFIG_IS_ENABLED(BLOCK_CACHE) && !CONFIG_IS_ENABLED(SPL_BUILD)) || \
> +	 (CONFIG_IS_ENABLED(SPL_BLOCK_CACHE) && CONFIG_IS_ENABLED(SPL_BUILD))
>  /**
>   * blkcache_read() - attempt to read a set of blocks from cache
>   *

CONFIG_IS_ENABLED(FOO) has the logic for checking for SPL_FOO and
SPL_BUILD and so forth.  Thanks!

-- 
Tom
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