linux-kernel - Re: [PATCH -next] ASoC: Intel: Skylake: Fix to use list_for_each

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Date:   Wed, 26 Apr 2017 11:08:03 +0530
From:   Vinod Koul <vinod.koul@...el.com>
To:     "weiyongjun (A)" <weiyongjun1@...wei.com>
Cc:     Wei Yongjun <weiyj.lk@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Pardha Saradhi K <pardha.saradhi.kesapragada@...el.com>,
        G Kranthi <gudishax.kranthikumar@...el.com>,
        Hardik T Shah <hardik.t.shah@...el.com>,
        Jeeja KP <jeeja.kp@...el.com>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] ASoC: Intel: Skylake: Fix to use
 list_for_each_safe() when delete items

On Tue, Apr 25, 2017 at 07:57:57AM +0000, weiyongjun (A) wrote:
> > >
> > > Since we will remove items off the list using list_del() we need
> > > to use a safe version of the list_for_each() macro aptly named
> > > list_for_each_safe().
> > 
> > ah yes, god catch
> > 
> > > This is detected by Coccinelle semantic patch.
> > 
> > It is a good practice to include the script you used, do you mind adding
> > that in the log?
> > 
> 
> Sure. 

Sorry I meant this should be in changelog of the patch :)

> 
> @@
> iterator name list_for_each;
> expression E;
> expression pos, head;
> identifier l;
> @@
> *  list_for_each(pos, head)
> {
> ...
> *  \(list_del\|list_del_init\|list_move\|list_move_tail\)(pos, ...);
> ... when != \(goto l; \| break; \| return E; \| return;\)
> }
> 
> @@
> expression E;
> expression pos, head, ep;
> identifier list;
> identifier l;
> @@
> *  list_for_each(pos, head)
> {
> ...
> * ep = list_entry(pos, ..., list);
> ...
> *  \(list_del\|list_del_init\|list_move\|list_move_tail\)(&ep->list, ...);
> ... when != \(goto l; \| break; \| return E; \| return;\)
> }
> 
> @@
> iterator name list_for_each_prev;
> expression E;
> expression pos, head;
> identifier l;
> @@
> *  list_for_each_prev(pos, head)
> {
> ...
> *  \(list_del\|list_del_init\)(pos);
> ... when != \(goto l; \| break; \| return E; \| return;\)
> }
> 
> @@
> iterator name list_for_each_entry;
> expression E;
> expression pos, head;
> identifier l, member;
> @@
> 
> *  list_for_each_entry(pos, head, member)
> {
> ...
> *  \(list_del\|list_del_init\)(&pos->member);
> ... when != \(goto l; \| break; \| return E; \| return;\)
> }
> 
> @@
> iterator name list_for_each_entry_from;
> expression E;
> expression pos, head;
> identifier l, member;
> @@
> 
> *  list_for_each_entry_from(pos, head, member)
> {
> ...
> *  \(list_del\|list_del_init\)(&pos->member);
> ... when != \(goto l; \| break; \| return E; \| return;\)
> }
> 
> @@
> iterator name list_for_each_entry_reverse;
> expression E;
> expression pos, head;
> identifier l, member;
> @@
> 
> *  list_for_each_entry_reverse(pos, head, member)
> {
> ...
> *  \(list_del\|list_del_init\)(&pos->member);
> ... when != \(goto l; \| break; \| return E; \| return;\)
> }

-- 
~Vinod