static inline bool nvme_pci_use_sgls(struct nvme_dev *dev, struct request *req)
{
struct nvme_iod *iod = blk_mq_rq_to_pdu(req);
+ int nseg = blk_rq_nr_phys_segments(req);
unsigned int avg_seg_size;
- avg_seg_size = DIV_ROUND_UP(blk_rq_payload_bytes(req),
- blk_rq_nr_phys_segments(req));
+ if (nseg == 0)
+ return false;
+
+ avg_seg_size = DIV_ROUND_UP(blk_rq_payload_bytes(req), nseg);
if (!(dev->ctrl.sgls & ((1 << 0) | (1 << 1))))
return false;