linux-kernel - Re: [PATCH 0/6] MSI portability cleanups

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Message-ID: <20070201042909.GD3648@kroah.com>
Date:	Wed, 31 Jan 2007 20:29:09 -0800
From:	Greg KH <greg@...ah.com>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc:	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Jeff Garzik <jeff@...zik.org>, Tony Luck <tony.luck@...el.com>,
	Grant Grundler <grundler@...isc-linux.org>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Kyle McMartin <kyle@...isc-linux.org>, linuxppc-dev@...abs.org,
	Brice Goglin <brice@...i.com>, shaohua.li@...el.com,
	linux-pci@...ey.karlin.mff.cuni.cz,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: [PATCH 0/6] MSI portability cleanups

On Mon, Jan 29, 2007 at 09:09:14AM +1100, Benjamin Herrenschmidt wrote:
> 
> If we followed that "only do incrementental changes" rule all the time,
> imagine in what state would be our USB stack today since we couldn't
> have dropped in Linus replacement one ...

Bad example, that is not what happened at all.  There was not an
in-kernel USB stack when Linus wrote his.  Inaky had his
all-singing-all-dancing stack outside of the tree, and no one was really
helping out with it.

Only when Linus added his code to mainline did we all jump on it and
_incrementally_ improve it to what we have today.

So, in a way, you just proved that we need to do this in an incremental
fashion, which is what I was also saying all along :)

thanks,

greg k-h
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