[PATCH] freescale: ethernet: remove unnecessary unlikely()

[PATCH] freescale: ethernet: remove unnecessary unlikely()

[Igor Stoppa]

Both WARN_ON() and WARN_ONCE() already contain an unlikely(), so it's not
necessary to wrap it into another.

Signed-off-by: Igor Stoppa <igor.stoppa@huawei.com>
Cc: Madalin Bucur <madalin.bucur@nxp.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/freescale/dpaa/dpaa_eth.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
index 65a22cd9aef2..783134f1b779 100644
--- a/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
+++ b/drivers/net/ethernet/freescale/dpaa/dpaa_eth.c
@@ -1280,7 +1280,7 @@ static int dpaa_bman_release(const struct dpaa_bp *dpaa_bp,
 
 	err = bman_release(dpaa_bp->pool, bmb, cnt);
 	/* Should never occur, address anyway to avoid leaking the buffers */
-	if (unlikely(WARN_ON(err)) && dpaa_bp->free_buf_cb)
+	if (WARN_ON(err) && dpaa_bp->free_buf_cb)
 		while (cnt-- > 0)
 			dpaa_bp->free_buf_cb(dpaa_bp, &bmb[cnt]);
 
@@ -1704,10 +1704,8 @@ static struct sk_buff *contig_fd_to_skb(const struct dpaa_priv *priv,
 
 	skb = build_skb(vaddr, dpaa_bp->size +
 			SKB_DATA_ALIGN(sizeof(struct skb_shared_info)));
-	if (unlikely(!skb)) {
-		WARN_ONCE(1, "Build skb failure on Rx\n");
+	if (WARN_ONCE(!skb, "Build skb failure on Rx\n"))
 		goto free_buffer;
-	}
 	WARN_ON(fd_off != priv->rx_headroom);
 	skb_reserve(skb, fd_off);
 	skb_put(skb, qm_fd_get_length(fd));
@@ -1770,7 +1768,7 @@ static struct sk_buff *sg_fd_to_skb(const struct dpaa_priv *priv,
 			sz = dpaa_bp->size +
 				SKB_DATA_ALIGN(sizeof(struct skb_shared_info));
 			skb = build_skb(sg_vaddr, sz);
-			if (WARN_ON(unlikely(!skb)))
+			if (WARN_ON(!skb))
 				goto free_buffers;
 
 			skb->ip_summed = rx_csum_offload(priv, fd);
-- 
2.17.1

Re: [PATCH] freescale: ethernet: remove unnecessary unlikely()

[David Miller]

From: Igor Stoppa <igor.stoppa@gmail.com>
Date: Fri,  7 Sep 2018 20:23:18 +0300

> Both WARN_ON() and WARN_ONCE() already contain an unlikely(), so it's not
> necessary to wrap it into another.
> 
> Signed-off-by: Igor Stoppa <igor.stoppa@huawei.com>

Applied.