linux-kernel - Re: DM_MULTIPATH_RDAC: "scsi_normalize

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Message-Id: <1187993787.17399.343.camel@linuxchandra>
Date:	Fri, 24 Aug 2007 15:16:27 -0700
From:	Chandra Seetharaman <sekharan@...ibm.com>
To:	Randy Dunlap <randy.dunlap@...cle.com>
Cc:	Martin Michlmayr <tbm@...ius.com>,
	Mike Christie <michaelc@...wisc.edu>,
	linux-kernel@...r.kernel.org
Subject: Re: DM_MULTIPATH_RDAC: "scsi_normalize_sense" undefined

On Fri, 2007-08-24 at 15:00 -0700, Randy Dunlap wrote:
> On Fri, 24 Aug 2007 14:33:02 -0700 Chandra Seetharaman wrote:
> 
> > It does, but "rdac" _is_ for a SCSI device.
> 
> It does __what__ ?  depend on SCSI?

Yes, as you understood it correctly :)

> I don't see that in drivers/md/Kconfig.
> Sounds like Martin is correct, SCSI needs to be added, like below.

I do agree that the following patch would be needed.

Since the rdac hardware handler is for a scsi device, including it
without SCSI would not achieve anything (as his device won't be visible
in the first place). Hence my question.

For completeness, I agree that we need the fix pointed below.
> 
> 
> > What device are you using it with ?
> > 
> > On Fri, 2007-08-24 at 18:08 +0200, Martin Michlmayr wrote:
> > > I just got:
> > > 
> > >   Building modules, stage 2.
> > >   MODPOST 414 modules
> > > ERROR: "scsi_normalize_sense" [drivers/md/dm-rdac.ko] undefined!
> > > make[1]: *** [__modpost] Error 1
> > > 
> > > Presumably DM_MULTIPATH_RDAC needs to depend on SCSI (not enabled
> > > here) since it uses scsi_normalize_sense.
> 
> ---
> 
> From: Randy Dunlap <randy.dunlap@...cle.com>
> 
> DM_MULTIPATH_RDAC uses SCSI API(s) and is for a SCSI device,
> so add SCSI to its depends on to prevent build errors.
> 
> Not tested.
> 
> Signed-off-by: Randy Dunlap <randy.dunlap@...cle.com>
> ---
>  drivers/md/Kconfig |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- linux-2.6.23-rc3-git6.orig/drivers/md/Kconfig
> +++ linux-2.6.23-rc3-git6/drivers/md/Kconfig
> @@ -263,7 +263,7 @@ config DM_MULTIPATH_EMC
> 
>  config DM_MULTIPATH_RDAC
>  	tristate "LSI/Engenio RDAC multipath support (EXPERIMENTAL)"
> -	depends on DM_MULTIPATH && BLK_DEV_DM && EXPERIMENTAL
> +	depends on DM_MULTIPATH && BLK_DEV_DM && SCSI && EXPERIMENTAL
>  	---help---
>  	  Multipath support for LSI/Engenio RDAC.
> 
-- 

----------------------------------------------------------------------
    Chandra Seetharaman               | Be careful what you choose....
              - sekharan@...ibm.com   |      .......you may get it.
----------------------------------------------------------------------


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