Re: [RFC PATCH] SCSI: split Kconfig menu into two

[Adrian Bunk <bunk@kernel.org>]

On Sat, Sep 15, 2007 at 03:20:06PM +0200, Stefan Richter wrote:
> Adrian Bunk wrote:
> >>> There should first be the lowlevel SCSI, SATA, USB etc. drivers, these 
> >>> drivers should select CONFIG_SCSI, and then the menu offering support 
> >>> for disk, CD,...
> ...
> > If users who don't need it now enable CONFIG_SCSI (and drivers/ide/ 
> > usage is not that uncommon) that's a regression in the user interface.
> 
> Aha, first all interconnects/transports are configured.  If none of them
> 'select'ed SCSI, the menu for sd, sr, st stays invisible.  Otherwise it
> is exposed.
> 
> It still doesn't entirely clarify whether users need sd, sr, st, and
> whether thy need sd for the disk with root filesystem.

If you want to do it in a really perfect way, help texts aren't the 
solution. You'll have to make the options like CONFIG_BLK_DEV_SR no 
longer be user visible and select'ed through dummy options like e.g.:

config USB_STORAGE
        tristate "USB Mass Storage support"
        depends on USB
	select SCSI
	help
	  ...

config USB_STORAGE_SD
	tristate "USB Mass Storage hard disk support"
	depends on USB_STORAGE
	select BLK_DEV_SD
	help
	  ...

config USB_STORAGE_SR
        tristate "USB Mass Storage CD/DVD support"
        depends on USB_STORAGE
	select BLK_DEV_SR
        help
          ...


> Stefan Richter

cu
Adrian

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