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

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Message-ID: <AANLkTil-d7LqofvvB9_QGd7Quy4kPucWGpJ5LHl94LoP@mail.gmail.com>
Date:	Wed, 16 Jun 2010 21:30:23 +1000
From:	Julian Calaby <julian.calaby@...il.com>
To:	Matthew Wilcox <matthew@....cx>
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 21:09, Matthew Wilcox <matthew@....cx> wrote:
> 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.

I did a double take at patch 4 when skimming over them, then took a
proper look at the lot of them. Whilst I agree that 5 isn't doing
anything particularly bad, it does seem wrong, especially in the
context of 3 and 4.

Thanks,

-- 

Julian Calaby

Email: julian.calaby@...il.com
.Plan: http://sites.google.com/site/juliancalaby/
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