From: Dave Jiang <dave.jiang@intel.com>
Date: Mon, 30 Jan 2017 21:21:17 +0000 (-0700)
Subject: ntb: ntb_perf missing dmaengine_unmap_put
X-Git-Tag: C0P2-H0.0--20200415~10143
X-Git-Url: https://git.somdevices.com/?a=commitdiff_plain;h=f4202601509465c3d2e96b6bfd4a1237ac4268d1;p=linux.git

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 e75d4fdc0866..434e1d474f33 100644
--- 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);