[PATCH] drivers: staging: zcache: fix Kconfig crypto dependency

[Konrad Rzeszutek Wilk]

On Mon, Apr 23, 2012 at 08:33:50PM -0500, Seth Jennings wrote:
> ZCACHE is a boolean in the Kconfig.  When selected, it
> should require that CRYPTO be builtin (=y).

Hey Greg,

Please push this to your tree at your convience. linux-next
folks found this combination breaks the build ..

> 
> Currently, ZCACHE=y and CRYPTO=m is a valid configuration
> when it should not be.
> 
> This patch changes the zcache Kconfig to enforce this
> dependency.
> 
> Signed-off-by: Seth Jennings <sjenning at linux.vnet.ibm.com>

Acked-by: Konrad Rzeszutek Wilk <konrad.wilk at oracle.com>
> ---
>  drivers/staging/zcache/Kconfig |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/staging/zcache/Kconfig b/drivers/staging/zcache/Kconfig
> index 3ed2c8f..7048e01 100644
> --- a/drivers/staging/zcache/Kconfig
> +++ b/drivers/staging/zcache/Kconfig
> @@ -2,7 +2,7 @@ config ZCACHE
>  	bool "Dynamic compression of swap pages and clean pagecache pages"
>  	# X86 dependency is because zsmalloc uses non-portable pte/tlb
>  	# functions
> -	depends on (CLEANCACHE || FRONTSWAP) && CRYPTO && X86
> +	depends on (CLEANCACHE || FRONTSWAP) && CRYPTO=y && X86
>  	select ZSMALLOC
>  	select CRYPTO_LZO
>  	default n
> -- 
> 1.7.5.4