linux-kernel - [PATCH v1 0/2] NVIDIA Tegra serial driver improvements

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-next>] [day] [month] [year] [list]

Message-Id: <20200112180919.5194-1-digetx@gmail.com>
Date:   Sun, 12 Jan 2020 21:09:17 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Laxman Dewangan <ldewangan@...dia.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>
Cc:     linux-serial@...r.kernel.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1 0/2] NVIDIA Tegra serial driver improvements

Hello,

This series is a complement to [1], which changed APB DMA driver's runtime
PM to make DMA clock enabled only during of actual transfer activity.
Unfortunately turned out that it wasn't enough because serial driver keeps
RX DMA active all the time in practice and that's what the first patch of
this series addresses. Secondly, I noticed that DMA synchronization could
be improved, it is also addressed now. Please review and apply, thanks in
advance!

Dmitry Osipenko (2):
  tty: serial: tegra: Activate RX DMA transfer by request
  tty: serial: tegra: Optimize DMA buffer synchronization

 drivers/tty/serial/serial-tegra.c | 94 ++++++++++++++++++-------------
 1 file changed, 55 insertions(+), 39 deletions(-)

-- 
2.24.0