linux-kernel - Re: [PATCH] PPC: CHRP - fix possible NULL pointer dereference

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Message-ID: <aa79d98a0711222023l31cdec98o47f56e3c87886a02@mail.gmail.com>
Date:	Fri, 23 Nov 2007 07:23:54 +0300
From:	"Cyrill Gorcunov" <gorcunov@...il.com>
To:	"Stephen Rothwell" <sfr@...b.auug.org.au>
Cc:	PPCML <linuxppc-dev@...abs.org>, "Olof Johansson" <olof@...om.net>,
	"Paul Mackerras" <paulus@...ba.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] PPC: CHRP - fix possible NULL pointer dereference

On 11/23/07, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> On Thu, 22 Nov 2007 22:54:23 +0300 Cyrill Gorcunov <gorcunov@...il.com>
> wrote:
> >
> > This patch does fix possible NULL pointer dereference
> > inside of strncmp() if of_get_property() failed.
>
> Thanks for this.
>
> >  static void __init sio_init(void)
> >  {
> >   struct device_node *root;
> > + const char *model = NULL;
>
> You don't need this initialization as you always assign the variable
> before you use it.
>
> > + root = of_find_node_by_path("/");
> > + if (root) {
>
>  if (!root)
>   return;
>
> would save a level of indentation. Not important.
>
> --
> Cheers,
> Stephen Rothwell                    sfr@...b.auug.org.au
> http://www.canb.auug.org.au/~sfr/
>
Oh my :) Thanks. I'll fix it and resend.
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