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blk-mq-pci.c

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    blk-mq-pci: add a fallback when pci_irq_get_affinity returns NULL
    Christoph Hellwig authored and Jens Axboe committed 
    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: default avatarChristoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Reviewed-by: default avatarOmar Sandoval <osandov@fb.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
    c0053903
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    blk-mq-pci.c 1.60 KiB