netdev - Re: [PATCH 1/3] sh_eth: make sh_eth_soft

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: <CAMuHMdVb2q=S6ucYCpwnVse-COefcuUGT6DO5Ympo+BjiVN9sg@mail.gmail.com>
Date:   Mon, 4 Jun 2018 10:48:59 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc:     netdev <netdev@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>
Subject: Re: [PATCH 1/3] sh_eth: make sh_eth_soft_swap() work on ARM

On Sat, Jun 2, 2018 at 9:37 PM, Sergei Shtylyov
<sergei.shtylyov@...entembedded.com> wrote:
> Browsing  thru the driver disassembly, I noticed that ARM gcc generated
> no  code  whatsoever for sh_eth_soft_swap() while building a little-endian
> kernel -- apparently __LITTLE_ENDIAN__ was not being #define'd, however
> it got implicitly #define'd when building with the SH gcc (I could only
> find the explicit #define __LITTLE_ENDIAN that was #include'd when building
> a little-endian kernel).  Luckily, the Ether controller  only doing big-
> endian DMA is encountered on the early SH771x SoCs only and all ARM SoCs
> implement EDMR.DE and thus set 'sh_eth_cpu_data::hw_swap'. But anyway, we
> need to fix the #ifdef inside sh_eth_soft_swap() to something that would
> work on all architectures...
>
> Signed-off-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds