bsg currently checks ->request_fn to check whether a queue can
handle struct request. But with blk-mq, we don't have a request_fn
yet are request based. Add a queue_is_rq_based() helper and use
that in bsg, I'm guessing this is not the last place we need to
update for this. Besides, it better explains what is being
checked.
Signed-off-by: Jens Axboe <axboe@fb.com>
/*
* we need a proper transport to send commands, not a stacked device
*/
- if (!q->request_fn)
+ if (!queue_is_rq_based(q))
return 0;
bcd = &q->bsg_dev;
#define rq_data_dir(rq) (((rq)->cmd_flags & 1) != 0)
+/*
+ * Driver can handle struct request, if it either has an old style
+ * request_fn defined, or is blk-mq based.
+ */
+static inline bool queue_is_rq_based(struct request_queue *q)
+{
+ return q->request_fn || q->mq_ops;
+}
+
static inline unsigned int blk_queue_cluster(struct request_queue *q)
{
return q->limits.cluster;