1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 9381171c2fc0..11e64b50497f 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1784,8 +1784,10 @@ void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q)
                 blk_queue_max_integrity_segments(q, shost->sg_prot_tablesize);
         }
 
-        shost->max_sectors = min_t(unsigned int, shost->max_sectors,
-                        dma_max_mapping_size(dev) << SECTOR_SHIFT);
+        if (dev->dma_mask) {
+                shost->max_sectors = min_t(unsigned int, shost->max_sectors,
+                                dma_max_mapping_size(dev) >> SECTOR_SHIFT);
+        }
         blk_queue_max_hw_sectors(q, shost->max_sectors);
         if (shost->unchecked_isa_dma)
                 blk_queue_bounce_limit(q, BLK_BOUNCE_ISA);