From: Sanjay R Mehta sanju.mehta@amd.com
[ Upstream commit 98f4e140264eeb52f22ff05be6b6dd48237255ac ]
Currently, ntb->dev is passed to dma_alloc_coherent and dma_free_coherent calls. The returned dma_addr_t is the CPU physical address. This works fine as long as IOMMU is disabled. But when IOMMU is enabled, we need to make sure that IOVA is returned for dma_addr_t. So the correct way to achieve this is by changing the first parameter of dma_alloc_coherent() as ntb->pdev->dev instead.
Fixes: 5648e56d03fa ("NTB: ntb_perf: Add full multi-port NTB API support") Signed-off-by: Logan Gunthorpe logang@deltatee.com Signed-off-by: Sanjay R Mehta sanju.mehta@amd.com Signed-off-by: Arindam Nath arindam.nath@amd.com Signed-off-by: Jon Mason jdmason@kudzu.us Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/ntb/test/ntb_perf.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c index 80508da3c8b5c..2ee41b988c5dd 100644 --- a/drivers/ntb/test/ntb_perf.c +++ b/drivers/ntb/test/ntb_perf.c @@ -559,7 +559,7 @@ static void perf_free_inbuf(struct perf_peer *peer) return;
(void)ntb_mw_clear_trans(peer->perf->ntb, peer->pidx, peer->gidx); - dma_free_coherent(&peer->perf->ntb->dev, peer->inbuf_size, + dma_free_coherent(&peer->perf->ntb->pdev->dev, peer->inbuf_size, peer->inbuf, peer->inbuf_xlat); peer->inbuf = NULL; } @@ -588,8 +588,9 @@ static int perf_setup_inbuf(struct perf_peer *peer)
perf_free_inbuf(peer);
- peer->inbuf = dma_alloc_coherent(&perf->ntb->dev, peer->inbuf_size, - &peer->inbuf_xlat, GFP_KERNEL); + peer->inbuf = dma_alloc_coherent(&perf->ntb->pdev->dev, + peer->inbuf_size, &peer->inbuf_xlat, + GFP_KERNEL); if (!peer->inbuf) { dev_err(&perf->ntb->dev, "Failed to alloc inbuf of %pa\n", &peer->inbuf_size); @@ -1512,4 +1513,3 @@ static void __exit perf_exit(void) destroy_workqueue(perf_wq); } module_exit(perf_exit); -