linux-kernel - Re: [PATCH] serial: sirf: Simplify a test

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Date:   Tue, 08 Nov 2016 12:41:26 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     linux-arm-kernel@...ts.infradead.org, baohua@...nel.org,
        gregkh@...uxfoundation.org, kernel-janitors@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org,
        jslaby@...e.com
Subject: Re: [PATCH] serial: sirf: Simplify a test

On Tuesday, November 8, 2016 8:18:04 AM CET Christophe JAILLET wrote:
> Le 07/11/2016 à 14:50, Arnd Bergmann a écrit :
> > On Tuesday, November 1, 2016 8:03:33 AM CET Christophe JAILLET wrote:
> >> 'dmaengine_prep_dma_cyclic()' does not return an error pointer, so the test
> >> can be simplified to be more consistent.
> >>
> >> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
> > The change looks correct in principle. It would be good to automate looking
> > for other instances of this bug. How did you find it? Do you have e.g. a
> > coccinelle script or did you just stumble over the issue by accident?
> Hi,
> 
> You can have an idea of the strategy used in this post:
>     https://lkml.org/lkml/2016/11/1/388
> 
> Julia is currently working on a more complete strategy in order to find 
> such issues.

Ah, very nice!

	Arnd