From: Tushar Dave <[email protected]>
Date: Tue, 11 Jul 2017 14:34:47 -0700
> 64bit DMA only supported on sun4v equipped with ATU IOMMU HW.
> 'Commit b02c2b0bfd7ae ("sparc: remove arch specific dma_supported
> implementations")' introduced a code that incorrectly allow
> dma_supported() to succeed for 64bit dma mask even if system doesn't
> have ATU IOMMU. This results into panic.
>
> Fix it.
>
> Reported-by: Meelis Roos <[email protected]>
> Signed-off-by: Tushar Dave <[email protected]>
Applied to the 'sparc' tree, thanks.
