linux-kernel - Re: linux-next: Tree for January 6 (MTD)

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Date:	Tue, 06 Jan 2009 13:16:18 -0800
From:	Randy Dunlap <randy.dunlap@...cle.com>
To:	Alexey Korolev <akorolev@...radead.org>
CC:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Vasiliy Leonenko <vasiliy.leonenko@...il.com>
Subject: Re: linux-next: Tree for January 6 (MTD)

Alexey Korolev wrote:
> Hi Randy,
> 
>> # CONFIG_MTD_LPDDR is not set
>> CONFIG_MTD_QINFO_PROBE=y
>>
>> There appears to be too little control/coordination between those
>> two kconfig symbols.  Surely one of them (MTD_QINFO_PROBE) should
>> depend on the other (MTD_LPDDR).  And why even build 2 modules
>> when MTD_QINFO_PROBE is enabled?  Why not combine the code into
>> one module?
> Thanks a lot for good finding. Here is a fix for the problem.
> 
> About combining: it is assumed to have one QINFO probing module for several
> kinds of LPDDR command set drivers. If we combine two modules into
> one it would make further extension rather hard. So it is better to have
> two modules.
> To fix a problem I just added dependency in Kconfig file.
> This temporary fix which will work until we have just one cmdset module.
> In near future we will make a fix which parse command set types
>  and select proper driver according to device type.
> 
> Thanks,
> Alexey
> 
> Signed-off-by: Alexey Korolev <akorolev@...radead.org>

Acked-by: Randy Dunlap <randy.dunlap@...cle.com>

Thanks.

> ---
> diff --git a/drivers/mtd/lpddr/Kconfig b/drivers/mtd/lpddr/Kconfig
> index acd4ea9..5a401d8 100644
> --- a/drivers/mtd/lpddr/Kconfig
> +++ b/drivers/mtd/lpddr/Kconfig
> @@ -12,6 +12,7 @@ config MTD_LPDDR
>  	  DDR memories, intended for battery-operated systems.
>  
>  config MTD_QINFO_PROBE
> +	depends on MTD_LPDDR
>  	tristate "Detect flash chips by QINFO probe"
>  	help
>  	    Device Information for LPDDR chips is offered through the Overlay
> 
> 


-- 
~Randy
--
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