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authorSanjay R Mehta <sanju.mehta@amd.com>2020-05-06 07:21:50 +0300
committerJon Mason <jdmason@kudzu.us>2020-06-06 03:02:08 +0300
commit433efe720674efd9fdbcef78be75793393cf05db (patch)
tree61e6ed1d31aab6ba397b22dbde7bea5dc7c2aee9 /drivers/ntb
parent98f4e140264eeb52f22ff05be6b6dd48237255ac (diff)
downloadlinux-433efe720674efd9fdbcef78be75793393cf05db.tar.xz
ntb_tool: 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: Sanjay R Mehta <sanju.mehta@amd.com> Signed-off-by: Arindam Nath <arindam.nath@amd.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
Diffstat (limited to 'drivers/ntb')
-rw-r--r--drivers/ntb/test/ntb_tool.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/ntb/test/ntb_tool.c b/drivers/ntb/test/ntb_tool.c
index 69da758fe64c..9eaeb221d980 100644
--- a/drivers/ntb/test/ntb_tool.c
+++ b/drivers/ntb/test/ntb_tool.c
@@ -590,7 +590,7 @@ static int tool_setup_mw(struct tool_ctx *tc, int pidx, int widx,
inmw->size = min_t(resource_size_t, req_size, size);
inmw->size = round_up(inmw->size, addr_align);
inmw->size = round_up(inmw->size, size_align);
- inmw->mm_base = dma_alloc_coherent(&tc->ntb->dev, inmw->size,
+ inmw->mm_base = dma_alloc_coherent(&tc->ntb->pdev->dev, inmw->size,
&inmw->dma_base, GFP_KERNEL);
if (!inmw->mm_base)
return -ENOMEM;
@@ -612,7 +612,7 @@ static int tool_setup_mw(struct tool_ctx *tc, int pidx, int widx,
return 0;
err_free_dma:
- dma_free_coherent(&tc->ntb->dev, inmw->size, inmw->mm_base,
+ dma_free_coherent(&tc->ntb->pdev->dev, inmw->size, inmw->mm_base,
inmw->dma_base);
inmw->mm_base = NULL;
inmw->dma_base = 0;
@@ -629,7 +629,7 @@ static void tool_free_mw(struct tool_ctx *tc, int pidx, int widx)
if (inmw->mm_base != NULL) {
ntb_mw_clear_trans(tc->ntb, pidx, widx);
- dma_free_coherent(&tc->ntb->dev, inmw->size,
+ dma_free_coherent(&tc->ntb->pdev->dev, inmw->size,
inmw->mm_base, inmw->dma_base);
}