linux-kernel - Re: [PATCH update] SCSI: update Kconfig help text to indicate SCSI core's widespread usage

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Date:	Sat, 15 Sep 2007 14:59:24 +0200
From:	Adrian Bunk <bunk@...nel.org>
To:	Stefan Richter <stefanr@...6.in-berlin.de>
Cc:	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>,
	James Bottomley <james.bottomley@...eleye.com>,
	linux-scsi@...r.kernel.org, Jeff Garzik <jeff@...zik.org>,
	Andi Kleen <andi@...stfloor.org>,
	Folkert van Heusden <folkert@...heusden.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH update] SCSI: update Kconfig help text to indicate SCSI
	core's widespread usage

On Fri, Sep 14, 2007 at 11:14:21PM +0200, Stefan Richter wrote:
> Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>
> ---
> 
> And one more update:
> There is SAS too, and I forgot 'is' in "on a disk which __ accessed via".
> 
>  drivers/scsi/Kconfig |   67 ++++++++++++++++++++++---------------------
>  1 file changed, 35 insertions(+), 32 deletions(-)
> 
> Index: linux-2.6.23-rc6/drivers/scsi/Kconfig
> ===================================================================
> --- linux-2.6.23-rc6.orig/drivers/scsi/Kconfig
> +++ linux-2.6.23-rc6/drivers/scsi/Kconfig
> @@ -12,23 +12,31 @@ config SCSI
>  	depends on BLOCK
>  	select SCSI_DMA if HAS_DMA
>  	---help---
> -	  If you want to use a SCSI hard disk, SCSI tape drive, SCSI CD-ROM or
> -	  any other SCSI device under Linux, say Y and make sure that you know
> -	  the name of your SCSI host adapter (the card inside your computer
> -	  that "speaks" the SCSI protocol, also called SCSI controller),
> -	  because you will be asked for it.
> -
> -	  You also need to say Y here if you have a device which speaks
> -	  the SCSI protocol.  Examples of this include the parallel port
> -	  version of the IOMEGA ZIP drive, USB storage devices, Fibre
> -	  Channel, FireWire storage and the IDE-SCSI emulation driver.
> +	  This option enables core support for SCSI protocols.
> +	  You need it
> +	  - for classic parallel SCSI hardware,
> +	  - for newer SCSI transports such as Fibre Channel, FireWire storage,
> +	    SAS, or iSCSI,
> +	  - for non-SCSI hardware which speaks SCSI protocols, such as USB
> +	    storage devices or the parallel port version of Iomega Zip drive,


but not for CONFIG_BLK_DEV_UB


> +	  - for non-SCSI hardware whose drivers translate from and to SCSI
> +	    protocols, most notably all Serial ATA drivers, and Parallel ATA
> +	    via the ATA configuration option.


but not for CONFIG_BLK_DEV_IDE_SATA


>  	  To compile this driver as a module, choose M here and read
>  	  <file:Documentation/scsi/scsi.txt>.
>  	  The module will be called scsi_mod.
>  
>  	  However, do not compile this as a module if your root file system
> -	  (the one containing the directory /) is located on a SCSI device.
> +	  (the one containing the directory /) is located on a SCSI device
> +	  or on a device whose driver represents it as SCSI device, as
> +	  indicated above.  Choose Y in this case, or set up an initrd.
> +
> +	  Subsequent options in this menu enable specific SCSI command set
> +	  support for harddisks, CD/DVD-ROM/R/W, tapes etc..  This menu also
> +	  presents options for specific SCSI controllers, while options for
> +	  some other SCSI transports and all non-SCSI controllers are located
> +	  in other menus (SATA, USB, FireWire etc.).
>...


You expect all kconfig users to read and completely understand this?

Although it's no longer required that the user sees the CONFIG_SCSI 
option at all since we can determine automaically when it's required
and when not?


> Stefan Richter

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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