nvme: clear any SGL flags in passthru commands
The host driver should decide whether to use SGLs or PRPs and they currently assume the flags are cleared after the call to nvme_setup_cmd(). However, passed-through commands may erroneously set these bits; so clear them for all cases. Signed-off-by: NLogan Gunthorpe <logang@deltatee.com> Reviewed-by: NKeith Busch <kbusch@kernel.org> Reviewed-by: NSagi Grimberg <sagi@grimberg.me> Signed-off-by: NChristoph Hellwig <hch@lst.de>
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