linux-kernel - Re: [PATCH 2/6] spi: sun4i: restrict transfer length in PIO-mode

Open Source and information security mailing list archives

Message-ID: <c3b41806-dc12-3af9-8b3a-bd1a611293f8@orpaltech.com>
Date:   Tue, 3 Apr 2018 13:26:34 +0300
From:   Sergey Suloev <ssuloev@...altech.com>
To:     Maxime Ripard <maxime.ripard@...tlin.com>
Cc:     Chen-Yu Tsai <wens@...e.org>, Mark Brown <broonie@...nel.org>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-spi@...r.kernel.org
Subject: Re: [PATCH 2/6] spi: sun4i: restrict transfer length in PIO-mode

On 04/03/2018 11:10 AM, Maxime Ripard wrote:
> On Thu, Mar 29, 2018 at 09:59:03PM +0300, Sergey Suloev wrote:
>> There is no need to handle 3/4 empty/full interrupts as the maximum
>> supported transfer length in PIO mode is 64 bytes for sun4i-family
>> SoCs.
> That assumes that you'll be able to treat the FIFO full interrupt and
> drain the FIFO before we have the next byte coming in. This would
> require a real time system, and we're not in one of them.
>
> Maxime
>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

so you think we should still handle 3/4 FIFO full ?

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