Re: [PATCH net] net: mvneta: fix the Rx desc DMA address in the Rx path

[David Miller]

From: Antoine Tenart <antoine.tenart@xxxxxxxxxxx>
Date: Fri, 22 Jun 2018 10:15:39 +0200

> When using s/w buffer management, buffers are allocated and DMA mapped.
> When doing so on an arm64 platform, an offset correction is applied on
> the DMA address, before storing it in an Rx descriptor. The issue is
> this DMA address is then used later in the Rx path without removing the
> offset correction. Thus the DMA address is wrong, which can led to
> various issues.
> 
> This patch fixes this by removing the offset correction from the DMA
> address retrieved from the Rx descriptor before using it in the Rx path.
> 
> Fixes: 8d5047cf9ca2 ("net: mvneta: Convert to be 64 bits compatible")
> Signed-off-by: Antoine Tenart <antoine.tenart@xxxxxxxxxxx>

Applied and queued up for -stable, thank you.