linux-kernel - RE: Re: [PATCH v3 11/14] dmaengine: imx-sdma: fix ecspi1 rx dma not work on i.mx8mm

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: <VI1PR04MB45436C98D70C16635CF3CFDE89070@VI1PR04MB4543.eurprd04.prod.outlook.com>
Date:   Tue, 21 May 2019 04:58:38 +0000
From:   Robin Gong <yibin.gong@....com>
To:     Vinod Koul <vkoul@...nel.org>
CC:     "robh@...nel.org" <robh@...nel.org>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "u.kleine-koenig@...gutronix.de" <u.kleine-koenig@...gutronix.de>,
        "plyatov@...il.com" <plyatov@...il.com>,
        "dan.j.williams@...el.com" <dan.j.williams@...el.com>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "will.deacon@....com" <will.deacon@....com>,
        "l.stach@...gutronix.de" <l.stach@...gutronix.de>,
        dl-linux-imx <linux-imx@....com>,
        "linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>
Subject: RE:  Re: [PATCH v3 11/14] dmaengine: imx-sdma: fix ecspi1 rx dma not
 work on i.mx8mm

> -----Original Message-----
> From: Vinod Koul <vkoul@...nel.org>
> Sent: 2019年5月21日 12:18
> 
> On 07-05-19, 09:16, Robin Gong wrote:
> > Because the number of ecspi1 rx event on i.mx8mm is 0, the condition
> > check ignore such special case without dma channel enabled, which
> > caused
> > ecspi1 rx works failed. Actually, no need to check event_id0, checking
> > event_id1 is enough for DEV_2_DEV case because it's so lucky that
> > event_id1 never be 0.
> 
> Well is that by chance or design that event_id1 will be never 0?
> 
That's by chance. DEV_2_DEV is just for Audio case and non-zero for event_id1 on current i.MX family.