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| author | Tushar Dave <tushar.n.dave@oracle.com> | 2017-07-11 23:34:47 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-07-12 17:13:04 +0200 |
| commit | 2ad67141f1e47dc063b202993835361a06239aaa (patch) | |
| tree | 72e0552f4322006d4474f46637e8ff55cee2b1f3 /arch/sparc/kernel/pci_schizo.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc (diff) | |
| download | linux-2ad67141f1e47dc063b202993835361a06239aaa.tar.xz linux-2ad67141f1e47dc063b202993835361a06239aaa.zip | |
SPARC64: Fix sun4v DMA panic
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 <mroos@linux.ee>
Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/pci_schizo.c')
0 files changed, 0 insertions, 0 deletions