netdev - [PATCH 1/2] net: fec: use managed DMA API functions to allocate BD ring

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Message-Id: <1437400298-17379-1-git-send-email-l.stach@pengutronix.de>
Date:	Mon, 20 Jul 2015 15:51:37 +0200
From:	Lucas Stach <l.stach@...gutronix.de>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	Duan Andy <fugang.duan@...escale.com>,
	Frank Li <Frank.Li@...escale.com>, netdev@...r.kernel.org,
	kernel@...gutronix.de, patchwork-lst@...gutronix.de
Subject: [PATCH 1/2] net: fec: use managed DMA API functions to allocate BD ring

So it gets freed when the device is going away.
This fixes a DMA memory leak on driver probe() fail and driver
remove().

Signed-off-by: Lucas Stach <l.stach@...gutronix.de>
---
 drivers/net/ethernet/freescale/fec_main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 349365d85b92..b3287c6b069b 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -3142,7 +3142,7 @@ static int fec_enet_init(struct net_device *ndev)
 			fep->bufdesc_size;
 
 	/* Allocate memory for buffer descriptors. */
-	cbd_base = dma_alloc_coherent(NULL, bd_size, &bd_dma,
+	cbd_base = dmam_alloc_coherent(&fep->pdev->dev, bd_size, &bd_dma,
 				      GFP_KERNEL);
 	if (!cbd_base) {
 		return -ENOMEM;
-- 
2.1.4

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