linux-kernel - Re: [PATCH 0/5] Fix set but unused variable warnings

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Date:	Wed, 16 Jun 2010 05:09:15 -0600
From:	Matthew Wilcox <matthew@....cx>
To:	Julian Calaby <julian.calaby@...il.com>
Cc:	"Justin P. Mattock" <justinmattock@...il.com>,
	linux-kernel@...r.kernel.org, linux-wireless@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: [PATCH 0/5] Fix set but unused variable warnings

On Wed, Jun 16, 2010 at 03:52:58PM +1000, Julian Calaby wrote:
> Given that patches 3, 4 and 5 seem to be a cases of missing error
> handling, (3 and 4 in particular seem to be breaking things rather
> than fixing them) in my humble opinion, I think this set needs some
> work and discussion.
> 
> Justin, maybe you'd be better off posting the actual error messages
> (split up by subsystem) and letting the lists discuss them, rather
> than posting patches which are obviously wrong. (like the ones I've
> pointed out)

My first impression of patch 5 was "that can't be right", but upon review,
I concluded that was the best solution.  If we return the PTR_ERR, this
is going to confuse every user of scsi_host_alloc who are currently only
checking for NULL.

-- 
Matthew Wilcox				Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."
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