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cciss: initialize struct scsi_req 

The changes in "block: Make most scsi_req_init() calls implicit" mean
that every driver that supports the generic scsi ioctls needs to
call scsi_req_init on newly allocated requests, but that commit didn't
add the call to the ccіss driver.  Fix that to avoid crashes when
udev issues SG_IO commands.

Fixes: ca18d6f7 ("block: Make most scsi_req_init() calls implicit")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Meelis Roos <mroos@linux.ee>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2017-07-06 10:32:20 -07:00 committed by Jens Axboe
parent db2d153d7a
commit 0e2ff11311
1 changed files with 8 additions and 0 deletions
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8
drivers/block/cciss.c
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@ -1944,6 +1944,13 @@ static void cciss_get_serial_no(ctlr_info_t *h, int logvol,
return;
}
static void cciss_initialize_rq(struct request *rq)
{
struct scsi_request *sreq = blk_mq_rq_to_pdu(rq);
scsi_req_init(sreq);
}
/*
* cciss_add_disk sets up the block device queue for a logical drive
*/
@ -1956,6 +1963,7 @@ static int cciss_add_disk(ctlr_info_t *h, struct gendisk *disk,
disk->queue->cmd_size = sizeof(struct scsi_request);
disk->queue->request_fn = do_cciss_request;
disk->queue->initialize_rq_fn = cciss_initialize_rq;
disk->queue->queue_lock = &h->lock;
queue_flag_set_unlocked(QUEUE_FLAG_SCSI_PASSTHROUGH, disk->queue);
if (blk_init_allocated_queue(disk->queue) < 0)