linux-kernel - Re: [PATCH 3/3] mmc: usdhi6rol0: : use proper DMAENGINE API for termination

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: <CAMuHMdWk4gHc682m1YeAYJ8DLjSVuXaBNNXLfjUR4E=n0ZRJ2w@mail.gmail.com>
Date:   Wed, 23 Jun 2021 15:56:16 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     Linux MMC List <linux-mmc@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Jesper Nilsson <jesper.nilsson@...s.com>,
        Lars Persson <lars.persson@...s.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        linux-arm-kernel@...s.com,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/3] mmc: usdhi6rol0: : use proper DMAENGINE API for termination

On Wed, Jun 23, 2021 at 11:58 AM Wolfram Sang
<wsa+renesas@...g-engineering.com> wrote:
> dmaengine_terminate_all() is deprecated in favor of explicitly saying if
> it should be sync or async. Here, we want dmaengine_terminate_sync()
> because there is no other synchronization code in the driver to handle
> an async case.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>

 Looks OK, as this driver uses a threaded irq handler.
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

Have you tried triggering DMA termination, with lockdep enabled?

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