[SCSI] zfcp: Report scatter-gather limits to SCSI and block layer

Instead of dealing with large segments in the scatter-gather lists in
zfcp_qdio.c, report the limits to the upper layers. With these limits
in place, the code for mapping large data blocks to multiple sbales
can be removed.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index d13eb9a6408a..066b0507a639 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -682,6 +682,7 @@ struct zfcp_data zfcp_data = {
                 .use_clustering          = 1,
                 .sdev_attrs              = zfcp_sysfs_sdev_attrs,
                 .max_sectors             = (ZFCP_MAX_SBALES_PER_REQ * 8),
+                .dma_boundary            = ZFCP_QDIO_SBALE_LEN - 1,
                 .shost_attrs             = zfcp_sysfs_shost_attrs,
         },
 };