linux-kernel - Re: [PATCH v4 5/5] dmaengine: mediatek: fix zalloc-simple.cocci warnings

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20180213064659.GD3666@localhost>
Date:   Tue, 13 Feb 2018 12:16:59 +0530
From:   Vinod Koul <vinod.koul@...el.com>
To:     Julia Lawall <julia.lawall@...6.fr>
Cc:     sean.wang@...iatek.com, dan.j.williams@...el.com,
        robh+dt@...nel.org, mark.rutland@....com,
        dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
        linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Fengguang Wu <fengguang.wu@...el.com>
Subject: Re: [PATCH v4 5/5] dmaengine: mediatek: fix zalloc-simple.cocci
 warnings

On Fri, Feb 09, 2018 at 03:55:58PM +0100, Julia Lawall wrote:
> 
> > > -	ring->txd = dma_alloc_coherent(hsdma2dev(hsdma),
> > > -				       pc->sz_ring, &ring->tphys,
> > > -				       GFP_ATOMIC | __GFP_ZERO);
> > > +	ring->txd = dma_zalloc_coherent(hsdma2dev(hsdma), pc->sz_ring,
> > > +					&ring->tphys, GFP_ATOMIC);
> > >  	if (!ring->txd)
> > >  		return -ENOMEM;
> > >
> > > -	memset(ring->txd, 0, pc->sz_ring);
> >
> > This should be folded back..
> 
> Sorry, I'm not sure what you mean by "folded back".

Since the original patch is also up for review in this series, it doesn't
help much to add a change and fix on top in a series. The fix should be
folded back into the original commit. IIRC Fengguang's bot also recommends
so..

-- 
~Vinod