linux-kernel - Re: [PATCH] powerpc: Use common error handling code in setup_new

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Message-ID: <20180315115753.rjejlkrp3fhdxbyk@mwanda>
Date:   Thu, 15 Mar 2018 14:57:53 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Thiago Jung Bauermann <bauerman@...ux.vnet.ibm.com>
Cc:     SF Markus Elfring <elfring@...rs.sourceforge.net>,
        linuxppc-dev@...ts.ozlabs.org,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Borislav Petkov <bp@...e.de>,
        Brijesh Singh <brijesh.singh@....com>,
        Josh Sklar <sklar@...ux.vnet.ibm.com>,
        Kees Cook <keescook@...omium.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Tom Lendacky <thomas.lendacky@....com>,
        LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] powerpc: Use common error handling code in
 setup_new_fdt()

On Wed, Mar 14, 2018 at 06:22:07PM -0300, Thiago Jung Bauermann wrote:
> 
> SF Markus Elfring <elfring@...rs.sourceforge.net> writes:
> 
> > From: Markus Elfring <elfring@...rs.sourceforge.net>
> > Date: Sun, 11 Mar 2018 09:03:42 +0100
> >
> > Add a jump target so that a bit of exception handling can be better reused
> > at the end of this function.
> >
> > This issue was detected by using the Coccinelle software.
> >
> > Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
> > ---
> >  arch/powerpc/kernel/machine_kexec_file_64.c | 28 ++++++++++++----------------
> >  1 file changed, 12 insertions(+), 16 deletions(-)
> 
> I liked it. Thanks!
> 
> Reviewed-by: Thiago Jung Bauermann <bauerman@...ux.vnet.ibm.com>
> 

You know that compilers already re-use string constants so this doesn't
actually save memory?  Also we should be preserving the error codes
instead of always returning -EINVAL.

regards,
dan carpenter