nhu/kernel_a52xq
Watch
1
Fork
You've already forked kernel_a52xq
 0
mirror of https://github.com/a52xq-dev/kernel.git synced 2026-10-18 21:58:11 +07:00
Code Issues Projects Releases Wiki Activity

scsi: dc395x: fix DMA API usage in sg_update_list

Browse source 
[ Upstream commit 6c404a68bf83b4135a8a9aa1c388ebdf98e8ba7f ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Christoph Hellwig 2018-10-11 16:17:15 +02:00 • committed by Greg Kroah-Hartman
commit 1f13afca91
1 changed files with 5 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

5
drivers/scsi/dc395x.c
View file

@ -1969,6 +1969,11 @@ 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;