linux-kernel - [PATCH] drivers/infiniband/hw/nes/nes_verbs.c: add missing calls to ib_umem

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Date:	Tue,  9 Aug 2011 16:16:31 +0200
From:	Julia Lawall <julia@...u.dk>
To:	Faisal Latif <faisal.latif@...el.com>
Cc:	kernel-janitors@...r.kernel.org, Roland Dreier <roland@...nel.org>,
	Sean Hefty <sean.hefty@...el.com>,
	Hal Rosenstock <hal.rosenstock@...il.com>,
	linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] drivers/infiniband/hw/nes/nes_verbs.c: add missing calls to ib_umem_release

From: Julia Lawall <julia@...u.dk>

Add calls to ib_umem_release, as in the other error-handling code in the
same function.

Signed-off-by: Julia Lawall <julia@...u.dk>

---
 drivers/infiniband/hw/nes/nes_verbs.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
index 9f2f7d4..394d0e7 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -2338,8 +2338,10 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 
 	skip_pages = ((u32)region->offset) >> 12;
 
-	if (ib_copy_from_udata(&req, udata, sizeof(req)))
+	if (ib_copy_from_udata(&req, udata, sizeof(req))) {
+		ib_umem_release(region);
 		return ERR_PTR(-EFAULT);
+	}
 	nes_debug(NES_DBG_MR, "Memory Registration type = %08X.\n", req.reg_type);
 
 	switch (req.reg_type) {
@@ -2631,6 +2633,7 @@ static struct ib_mr *nes_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
 			return &nesmr->ibmr;
 	}
 
+	ib_umem_release(region);
 	return ERR_PTR(-ENOSYS);
 }
 

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