linux-kernel - Re: [PATCH v2] mtd: cmdlinepart: fix the wrong check condition

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Date:	Sun, 02 Sep 2012 13:56:42 +0300
From:	Artem Bityutskiy <dedekind1@...il.com>
To:	Shmulik Ladkani <shmulik.ladkani@...il.com>
Cc:	Huang Shijie <shijie8@...il.com>, dwmw2@...radead.org,
	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mtd: cmdlinepart: fix the wrong check condition

On Sat, 2012-08-25 at 12:31 +0300, Shmulik Ladkani wrote:
> Hi Huang, Artem,
> 
> On Sat, 25 Aug 2012 16:06:50 -0400 Huang Shijie <shijie8@...il.com> wrote:
> > diff --git a/drivers/mtd/cmdlinepart.c b/drivers/mtd/cmdlinepart.c
> > index fc960a3..216d751 100644
> > --- a/drivers/mtd/cmdlinepart.c
> > +++ b/drivers/mtd/cmdlinepart.c
> > @@ -322,13 +322,16 @@ static int parse_cmdline_partitions(struct mtd_info *master,
> >  	struct cmdline_mtd_partition *part;
> >  	const char *mtd_id = master->name;
> >  
> > +	if (!mtd_id)
> > +		return 0;
> > +
> >  	/* parse command line */
> >  	if (!cmdline_parsed)
> >  		mtdpart_setup_real(cmdline);
> >  
> >  	for(part = partitions; part; part = part->next)
> >  	{
> > -		if ((!mtd_id) || (!strcmp(part->mtd_id, mtd_id)))
> > +		if (!strcmp(part->mtd_id, mtd_id))
> >  		{
> >  			for(i = 0, offset = 0; i < part->num_parts; i++)
> >  			{
> 
> This changes the behavior of cmdling parsing, which might affect users
> expecting the old behavior.

Yes, you are right, we should not change the mtd_id hack unless we have
checked all the users.

-- 
Best Regards,
Artem Bityutskiy

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