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NVMe: Use dma_set_mask() correctly
authorMatthew Wilcox <matthew.r.wilcox@intel.com>
Tue, 28 May 2013 20:46:46 +0000 (16:46 -0400)
committerMatthew Wilcox <matthew.r.wilcox@intel.com>
Tue, 28 May 2013 20:46:46 +0000 (16:46 -0400)
In some circumstances setting a 64-bit DMA mask can fail, as explained
in Documentation/DMA-API-HOWTO.txt.  Use the recommended code sequence
to set a 32-bit DMA mask if setting a 64-bit DMA mask fails.

Reported-by: Chayan Biswas <Chayan.Biswas@sandisk.com>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>

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