linux-kernel - Re: [PATCH] drivers: staging: zcache: fix Kconfig crypto dependency

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Date:	Mon, 23 Apr 2012 22:09:19 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Seth Jennings <sjenning@...ux.vnet.ibm.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Nitin Gupta <ngupta@...are.org>,
	Robert Jennings <rcj@...ux.vnet.ibm.com>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, Autif Khan <autif.mlist@...il.com>
Subject: Re: [PATCH] drivers: staging: zcache: fix Kconfig crypto dependency

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@...ux.vnet.ibm.com>

Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.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
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