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authorJames Bottomley <James.Bottomley@suse.de>2009-11-05 13:33:12 -0600
committerJames Bottomley <James.Bottomley@suse.de>2009-12-04 12:01:30 -0600
commitd139b9bd0e52dda14fd13412e7096e68b56d0076 (patch)
tree518daa6384ff606ec77dd8fe4714ea2f177d92c4 /drivers/scsi/scsi_lib_dma.c
parent5917290ce9b376866b165d02a5ed88d5ecdb32d0 (diff)
[SCSI] scsi_lib_dma: fix bug with dma maps on nested scsi objects
Some of our virtual SCSI hosts don't have a proper bus parent at the top, which can be a problem for doing DMA on them This patch makes the host device cache a pointer to the physical bus device and provides an extra API for setting it (the normal API picks it up from the parent). This patch also modifies the qla2xxx and lpfc vport logic to use the new DMA host setting API. Acked-By: James Smart <james.smart@emulex.com> Cc: Stable Tree <stable@kernel.org> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/scsi_lib_dma.c')
-rw-r--r--drivers/scsi/scsi_lib_dma.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/scsi/scsi_lib_dma.c b/drivers/scsi/scsi_lib_dma.c
index ac6855cd265..dcd128583b8 100644
--- a/drivers/scsi/scsi_lib_dma.c
+++ b/drivers/scsi/scsi_lib_dma.c
@@ -23,7 +23,7 @@ int scsi_dma_map(struct scsi_cmnd *cmd)
int nseg = 0;
if (scsi_sg_count(cmd)) {
- struct device *dev = cmd->device->host->shost_gendev.parent;
+ struct device *dev = cmd->device->host->dma_dev;
nseg = dma_map_sg(dev, scsi_sglist(cmd), scsi_sg_count(cmd),
cmd->sc_data_direction);
@@ -41,7 +41,7 @@ EXPORT_SYMBOL(scsi_dma_map);
void scsi_dma_unmap(struct scsi_cmnd *cmd)
{
if (scsi_sg_count(cmd)) {
- struct device *dev = cmd->device->host->shost_gendev.parent;
+ struct device *dev = cmd->device->host->dma_dev;
dma_unmap_sg(dev, scsi_sglist(cmd), scsi_sg_count(cmd),
cmd->sc_data_direction);