From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Osipenko Subject: Re: [PATCH v2] media: staging: tegra-vde: Reset memory client Date: Tue, 29 May 2018 16:08:30 +0300 Message-ID: <591c5840-d2ad-1ccf-0797-ab91fbd33006@gmail.com> References: <20180526142755.22966-1-digetx@gmail.com> <87260ffb-545f-4b2c-450f-25091d028187@xs4all.nl> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <87260ffb-545f-4b2c-450f-25091d028187@xs4all.nl> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: driverdev-devel-bounces@linuxdriverproject.org Sender: "devel" To: Hans Verkuil , Mauro Carvalho Chehab , Thierry Reding Cc: linux-tegra@vger.kernel.org, devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org List-Id: linux-tegra@vger.kernel.org On 29.05.2018 09:18, Hans Verkuil wrote: > Hi Dmitry, > > On 05/26/2018 04:27 PM, Dmitry Osipenko wrote: >> DMA requests must be blocked before resetting VDE HW, otherwise it is >> possible to get a memory corruption or a machine hang. Use the reset >> control provided by the Memory Controller to block DMA before resetting >> the VDE HW. >> >> Signed-off-by: Dmitry Osipenko >> --- >> >> Changelog: >> >> v2: >> - Reset HW even if Memory Client resetting fails. > > Please note that v1 has already been merged, so if you can make a v3 rebased > on top of the latest media_tree master branch, then I'll queue that up for > 4.18. > Thank you very much for letting me know, I'll make v3. Thierry, wouldn't you mind to queue the relevant devicetree patches for 4.18, or it's too late now? We'll have a full set in 4.18 then.