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From: Julia Lawall <julia.lawall@lip6.fr>
To: wen.yang99@zte.com.cn
Cc: kernel-janitors@vger.kernel.org, michal.lkml@markovi.net,
	yellowriver2010@hotmail.com, nicolas.palix@imag.fr,
	linux-kernel@vger.kernel.org, Markus.Elfring@web.de,
	cheng.shengyu@zte.com.cn, cocci@systeme.lip6.fr
Subject: Re: [Cocci] [v6] coccinelle: semantic code search for missing put_device()
Date: Tue, 19 Feb 2019 08:04:31 +0100 (CET)
Message-ID: <alpine.DEB.2.21.1902190804150.2570@hadrien> (raw)
In-Reply-To: <201902191014156680299@zte.com.cn>


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On Tue, 19 Feb 2019, wen.yang99@zte.com.cn wrote:

> > > I would have a hard time saying which one is more reasonable to test,
> > I suggest to reconsider the interpretation of this software situation once more.
> > > since both are extremely unlikely.
> > I disagree to this view because two ellipses were intentionally specified
> > in published SmPL scripts.
> > So some software developers found these “special use cases” important enough.
> > >> In addition, we feel that we should probably accept this patch first,
> > I disagree to this imagination because I would prefer to integrate a source code variant
> > without a bug (which was copied from a version on 2013-05-08 by Petr Strnad).
> > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/scripts/coccinelle/free/pci_free_consistent.cocci?id=f7b167113753e95ae61383e234f8d10142782ace#n12
> > I hope that nicer run time behaviour can become also relevant here.
>
> Both cases are extremely unlikely.
> Although we have tested these two methods in the existing kernel code,
> considering the evolution of the kernel code, these special cases may occur, so we are willing to take them into account.
> We plan to modify the code like this:
>
>  id = of_find_device_by_node@p1(x)
> -... when != e = id
> +... when != e = (T)id
> +    when != id = (T)e

This change is fine with me.

julia

>
> Do you have any other questions?
> Thanks.
>
> Regards,
> Wen

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Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-02-16 16:05 [Cocci] [PATCH v6] " Wen Yang
2019-02-16 16:33 ` Julia Lawall
2019-02-16 18:39 ` [Cocci] [v6] " Markus Elfring
2019-02-17  2:32   ` [Cocci] 答复: " Wen Yang
2019-02-17  7:42     ` Markus Elfring
2019-02-17  9:50 ` [Cocci] [PATCH v6] " Markus Elfring
2019-02-17 11:37   ` Julia Lawall
2019-02-17 11:42     ` Markus Elfring
2019-02-17 11:48       ` Julia Lawall
2019-02-17 12:00         ` [Cocci] [v6] " Markus Elfring
2019-02-17 12:05           ` Julia Lawall
2019-02-17 12:20             ` Markus Elfring
2019-02-17 12:52               ` Julia Lawall
2019-02-17 13:14                 ` Markus Elfring
2019-02-18  3:22                   ` wen.yang99
2019-02-18  6:43                     ` Julia Lawall
2019-02-18  8:19                       ` Markus Elfring
2019-02-19  2:14                         ` wen.yang99
2019-02-19  7:04                           ` Julia Lawall [this message]
2019-02-19  8:12                             ` Markus Elfring
2019-02-19  8:29                           ` Markus Elfring
2019-02-19  9:09                             ` wen.yang99
2019-02-19  9:30                               ` Markus Elfring
2019-03-06 11:18                           ` Markus Elfring
2019-02-18 21:40                     ` Markus Elfring

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