linux-kernel - [PATCH 06/20] IB/ipoib: drop useless LIST

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Date:   Sun, 23 Dec 2018 09:57:01 +0100
From:   Julia Lawall <Julia.Lawall@...6.fr>
To:     Doug Ledford <dledford@...hat.com>
Cc:     kernel-janitors@...r.kernel.org, Jason Gunthorpe <jgg@...pe.ca>,
        linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 06/20] IB/ipoib: drop useless LIST_HEAD

Drop LIST_HEAD where the variable it declares is never used.

Commit 31c02e215700 ("IPoIB: Avoid using stale last_send counter
when reaping AHs") removed the uses, but not the declaration.

The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier x;
@@
- LIST_HEAD(x);
  ... when != x
// </smpl>

Fixes: 31c02e215700 ("IPoIB: Avoid using stale last_send counter when reaping AHs")
Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
Successfully 0-day tested on 151 configurations.

 drivers/infiniband/ulp/ipoib/ipoib_ib.c |    1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_ib.c b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
index 6d35570092d6..78fa777c87b1 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_ib.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_ib.c
@@ -669,7 +669,6 @@ static void __ipoib_reap_ah(struct net_device *dev)
 {
 	struct ipoib_dev_priv *priv = ipoib_priv(dev);
 	struct ipoib_ah *ah, *tah;
-	LIST_HEAD(remove_list);
 	unsigned long flags;
 
 	netif_tx_lock_bh(dev);