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(parent: 6caa050) | patch
blk-mq-pci: add a fallback when pci_irq_get_affinity returns NULL
authorChristoph Hellwig <hch@lst.de>
Thu, 17 Aug 2017 10:24:47 +0000 (12:24 +0200)
committerJens Axboe <axboe@kernel.dk>
Fri, 18 Aug 2017 14:08:14 +0000 (08:08 -0600)
commitc005390374957baacbc38eef96ea360559510aa7
tree6055f163f22d993bcf03ed965510a45a8d28745btree | snapshot
parent6caa0503c43d65de92309b967b5b1aa289af303bcommit | diff
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>
block/blk-mq-pci.c diff | blob | history
Domain: System / Kernel; Licenses: GPL-2.0;