linux-kernel - Re: [PATCH net-next v4] net: dec: tulip: de2104x: Add shutdown handler to stop NIC

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Message-ID: <20201030171614.290266a8@kicinski-fedora-PC1C0HJN.hsd1.ca.comcast.net>
Date:   Fri, 30 Oct 2020 17:16:14 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Moritz Fischer <mdf@...nel.org>
Cc:     netdev@...r.kernel.org, davem@...emloft.net,
        linux-parisc@...r.kernel.org, linux-kernel@...r.kernel.org,
        lucyyan@...gle.com, moritzf@...gle.com,
        James.Bottomley@...senpartnership.com
Subject: Re: [PATCH net-next v4] net: dec: tulip: de2104x: Add shutdown
 handler to stop NIC

On Wed, 28 Oct 2020 10:21:25 -0700 Moritz Fischer wrote:
> The driver does not implement a shutdown handler which leads to issues
> when using kexec in certain scenarios. The NIC keeps on fetching
> descriptors which gets flagged by the IOMMU with errors like this:
> 
> DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000
> DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000
> DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000
> DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000
> DMAR: DMAR:[DMA read] Request device [5e:00.0]fault addr fffff000
> 
> Signed-off-by: Moritz Fischer <mdf@...nel.org>

Applied, thanks!