Commit 6c404a68 authored Oct 11, 2018 by Christoph Hellwig Committed by Martin K. Petersen Oct 17, 2018

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: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin 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;

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