Re: [PATCH] isd200: limit to BLK_DEV_IDE

[Linus Torvalds <torvalds@osdl.org>]

On Thu, 30 Mar 2006, Randy.Dunlap wrote:
> 
> In some way, the original line made sense to me:
> 	depends on USB_STORAGE && BLK_DEV_IDE
> where we have:        =y       &&     =m
> 
> so if USB_STORAGE_ISD200 were a tristate, it would have been limited
> to 'm', but since it's a bool, it's not limited.

Oh, the original makes _tons_ of sense. It's just that it doesn't show the 
real dependency.

It's perfectly fine to say

	bool
	depends on USB_STORAGE && BLK_DEV_IDE

and the bool will be true whenever usb storage and blk-dev-ide both are 
enabled somehow. So far so fine. 

It's just that in this case, it simply wasn't enough. It didn't _just_ 
depend on BLK_DEV_IDE, it depended on it being available at link-time. So 
the original Kconfig rule made perfect sense, it just didn't match the 
real dependency.

		Linus
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