linux-kernel - Re: [PATCH v4 08/12] soc: aspeed: xdma: Add reset ioctl

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Message-Id: <cb602d43-7e00-4d7b-8f05-6b774d573901@www.fastmail.com>
Date:   Thu, 09 Jan 2020 16:29:57 +1030
From:   "Andrew Jeffery" <andrew@...id.au>
To:     "Eddie James" <eajames@...ux.ibm.com>,
        linux-aspeed@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        mark.rutland@....com, "Jason Cooper" <jason@...edaemon.net>,
        "Marc Zyngier" <maz@...nel.org>,
        "Rob Herring" <robh+dt@...nel.org>, tglx@...utronix.de,
        "Joel Stanley" <joel@....id.au>
Subject: Re: [PATCH v4 08/12] soc: aspeed: xdma: Add reset ioctl



On Fri, 3 Jan 2020, at 05:57, Eddie James wrote:
> Users of the XDMA engine need a way to reset it if something goes wrong.
> Problems on the host side, or user error, such as incorrect host
> address, may result in the DMA operation never completing and no way to
> determine what went wrong. Therefore, add an ioctl to reset the engine
> so that users can recover in this situation.
> 
> Signed-off-by: Eddie James <eajames@...ux.ibm.com>

Acked-by: Andrew Jeffery <andrew@...id.au>