ntb: ntb_perf missing dmaengine_unmap_put

commit 9644347c5240d0ee3ba7472ef332aaa4ff4db398 upstream.

In the normal I/O execution path, ntb_perf is missing a call to
dmaengine_unmap_put() after submission. That causes us to leak
unmap objects.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Fixes: 8a7b6a77 ("ntb: ntb perf tool")
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/ntb/test/ntb_perf.c b/drivers/ntb/test/ntb_perf.c
index e75d4fdc08663905eace859cff6cdebdb97e92b5..434e1d474f3340e1d35b48c924a6bebfbfb0fa67 100644 (file)
--- a/drivers/ntb/test/ntb_perf.c
+++ b/drivers/ntb/test/ntb_perf.c
@@ -265,6 +265,8 @@ static ssize_t perf_copy(struct pthr_ctx *pctx, char __iomem *dst,
        if (dma_submit_error(cookie))
                goto err_set_unmap;
 
+       dmaengine_unmap_put(unmap);
+
        atomic_inc(&pctx->dma_sync);
        dma_async_issue_pending(chan);