linux-kernel - [PATCH 3.16 232/254] net: bcmgenet: fix bcmgenet

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Date:   Wed, 28 Feb 2018 15:20:18 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Petri Gynther" <pgynther@...gle.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 3.16 232/254] net: bcmgenet: fix bcmgenet_open()

3.16.55-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Petri Gynther <pgynther@...gle.com>

commit fac25940c5e0d6f31d56bb2a704fadad6d5e382a upstream.

If bcmgenet_init_dma() fails, it cleans up after itself. Rx and Tx
DMAs are off, and NAPI instances haven't been netif_napi_add()'ed.
Therefore, we need to skip calling bcmgenet_fini_dma() on the error
handling path. bcmgenet_resume() already does this correctly.

Signed-off-by: Petri Gynther <pgynther@...gle.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/net/ethernet/broadcom/genet/bcmgenet.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -2058,7 +2058,7 @@ static int bcmgenet_open(struct net_devi
 	ret = bcmgenet_init_dma(priv);
 	if (ret) {
 		netdev_err(dev, "failed to initialize DMA\n");
-		goto err_fini_dma;
+		goto err_clk_disable;
 	}
 
 	/* Always enable ring 16 - descriptor ring */