We can't just transfer ownership to the CPU and then unmap, as this will break with swiotlb.
Instead unmap the command and sense buffer a little earlier in the I/O completion handler and get rid of the pci_dma_sync_sg_for_cpu call entirely. Signed-off-by: Christoph Hellwig <[email protected]> --- drivers/scsi/dc395x.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/scsi/dc395x.c b/drivers/scsi/dc395x.c index 8705730b2e5a..8d7a26a33951 100644 --- a/drivers/scsi/dc395x.c +++ b/drivers/scsi/dc395x.c @@ -3349,14 +3349,12 @@ static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, } } - if (dir != PCI_DMA_NONE && scsi_sg_count(cmd)) - pci_dma_sync_sg_for_cpu(acb->dev, scsi_sglist(cmd), - scsi_sg_count(cmd), dir); - ckc_only = 0; /* Check Error Conditions */ ckc_e: + pci_unmap_srb(acb, srb); + if (cmd->cmnd[0] == INQUIRY) { unsigned char *base = NULL; struct ScsiInqData *ptr; @@ -3408,7 +3406,6 @@ static void srb_done(struct AdapterCtlBlk *acb, struct DeviceCtlBlk *dcb, } else { dprintkl(KERN_ERR, "srb_done: ERROR! Completed cmd with tmp_srb\n"); } - pci_unmap_srb(acb, srb); cmd->scsi_done(cmd); waiting_process_next(acb); -- 2.19.1
