linux-kernel - take the bus_dma_limit into account on arm

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Message-Id: <20200218184103.35932-1-hch@lst.de>
Date:   Tue, 18 Feb 2020 10:41:00 -0800
From:   Christoph Hellwig <hch@....de>
To:     Russell King <linux@...linux.org.uk>
Cc:     Peter Ujfalusi <peter.ujfalusi@...com>,
        Roger Quadros <rogerq@...com>,
        Robin Murphy <robin.murphy@....com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: take the bus_dma_limit into account on arm

Hi Russell,

this series fixes the arm dma coherent allocator to take the bus dma
mask into account, similar to what other architectures do.  Without
this devices that support 64-bit mask, but are limited by the
interconnect won't work properly.