From 98f4e140264eeb52f22ff05be6b6dd48237255ac Mon Sep 17 00:00:00 2001 From: Sanjay R Mehta Date: Tue, 5 May 2020 23:21:49 -0500 Subject: ntb_perf: pass correct struct device to dma_alloc_coherent 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 Signed-off-by: Sanjay R Mehta Signed-off-by: Arindam Nath Signed-off-by: Jon Mason --- drivers/ntb/test/ntb_perf.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/ntb/test/ntb_perf.c') diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c index f73b126dde65..b4e3f6e41320 100644 --- a/drivers/ntb/test/ntb_perf.c +++ b/drivers/ntb/test/ntb_perf.c @@ -557,7 +557,7 @@ 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; } @@ -586,8 +586,9 @@ 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); @@ -1554,4 +1555,3 @@ static void __exit perf_exit(void) destroy_workqueue(perf_wq); } module_exit(perf_exit); - -- cgit v1.2.3