[SCSI] block: make blk_rq_map_user take a NULL user-space buffer for WRITE

[thirdparty/linux.git] / drivers / scsi / sg.c

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 7d0b3d9ee43bc41806289fbad473e33c24a67fa6..8f0bd3f7a59fdbc9b8c50ab69904d388b4ce24c5 100644 (file)
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -1670,6 +1670,7 @@ static int sg_start_req(Sg_request *srp, unsigned char *cmd)
                md->page_order = req_schp->page_order;
                md->nr_entries = req_schp->k_use_sg;
                md->offset = 0;
+               md->null_mapped = hp->dxferp ? 0 : 1;
        }
 
        if (iov_count)