Commit 6c404a68 authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Martin K. Petersen
Browse files

scsi: dc395x: fix DMA API usage in sg_update_list 



We need to transfer device ownership to the CPU before we can manipulate
the mapped data.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 3a5bd702

drivers/scsi/dc395x.c

+5 −0
Original line number Diff line number Diff line
@@ -1871,6 +1871,11 @@ static void sg_update_list(struct ScsiReqBlk *srb, u32 left) 
			xferred -= psge->length;

		} else {

			/* Partial SG entry done */

			pci_dma_sync_single_for_cpu(srb->dcb->

					    acb->dev,

					    srb->sg_bus_addr,

					    SEGMENTX_LEN,

					    PCI_DMA_TODEVICE);

			psge->length -= xferred;

			psge->address += xferred;

			srb->sg_index = idx;