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pktcdvd: Check queue type before attaching to a queue
Since the pktcdvd driver only supports request queues for which
struct scsi_request is the first member of their private request
data, refuse to register block layer queues for which struct
scsi_request is not the first member of the private data.
References: commit 82ed4db499
("block: split scsi_request out of struct request")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Omar Sandoval <osandov@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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1 changed files with 5 additions and 0 deletions
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@ -2583,6 +2583,11 @@ static int pkt_new_dev(struct pktcdvd_device *pd, dev_t dev)
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bdev = bdget(dev);
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if (!bdev)
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return -ENOMEM;
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if (!blk_queue_scsi_passthrough(bdev_get_queue(bdev))) {
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WARN_ONCE(true, "Attempt to register a non-SCSI queue\n");
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bdput(bdev);
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return -EINVAL;
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}
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ret = blkdev_get(bdev, FMODE_READ | FMODE_NDELAY, NULL);
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if (ret)
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return ret;
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