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]
Date:   Thu, 5 Apr 2018 14:17:35 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Sergey Suloev <ssuloev@...altech.com>
Cc:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Chen-Yu Tsai <wens@...e.org>, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-spi@...r.kernel.org
Subject: Re: [PATCH v3 3/6] spi: sun6i: restrict transfer length in PIO-mode

On Thu, Apr 05, 2018 at 12:59:35PM +0300, Sergey Suloev wrote:
> On 04/05/2018 12:19 PM, Maxime Ripard wrote:

> > The point of that patch was precisely to allow to send more data than
> > the FIFO. You're breaking that behaviour without any justification,
> > and this is not ok.

> I am sorry, but you can't. That's a hardware limitation.

Are you positive about that?  Normally you can add things to hardware
FIFOs while they're being drained so so long as you can keep data
flowing in at least as fast as it's being consumed.

Download attachment "signature.asc" of type "application/pgp-signature" (489 bytes)

Powered by blists - more mailing lists