From 683229845f1780b10041ee7a1043fc8f10061455 Mon Sep 17 00:00:00 2001 From: Christof Schmitt Date: Fri, 30 Apr 2010 18:09:33 +0200 Subject: [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 Signed-off-by: Christof Schmitt Signed-off-by: James Bottomley --- drivers/s390/scsi/zfcp_aux.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'drivers/s390/scsi/zfcp_aux.c') diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c index 1e6183a86ce5..abf33db647ff 100644 --- a/drivers/s390/scsi/zfcp_aux.c +++ b/drivers/s390/scsi/zfcp_aux.c @@ -545,6 +545,10 @@ struct zfcp_adapter *zfcp_adapter_enqueue(struct ccw_device *ccw_device) &zfcp_sysfs_adapter_attrs)) goto failed; + /* report size limit per scatter-gather segment */ + adapter->dma_parms.max_segment_size = ZFCP_QDIO_SBALE_LEN; + adapter->ccw_device->dev.dma_parms = &adapter->dma_parms; + if (!zfcp_adapter_scsi_register(adapter)) return adapter; -- cgit v1.2.2