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linux/block/blk-mq-pci.c
Christoph Hellwig c005390374 blk-mq-pci: add a fallback when pci_irq_get_affinity returns NULL 
While pci_irq_get_affinity should never fail for SMP kernel that
implement the affinity mapping, it will always return NULL in the
UP case, so provide a fallback mapping of all queues to CPU 0 in
that case.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2017-08-18 08:08:14 -06:00

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