linux-kernel - [net v3 2/5] net: sgi: ioc3-eth: fix usage of GFP

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Message-Id: <20191104104515.7066-2-tbogendoerfer@suse.de>
Date:   Mon,  4 Nov 2019 11:45:12 +0100
From:   Thomas Bogendoerfer <tbogendoerfer@...e.de>
To:     Ralf Baechle <ralf@...ux-mips.org>,
        "David S. Miller" <davem@...emloft.net>,
        linux-mips@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     Christoph Hellwig <hch@....de>
Subject: [net v3 2/5] net: sgi: ioc3-eth: fix usage of GFP_* flags

From: Christoph Hellwig <hch@....de>

dma_alloc_coherent always zeroes memory, there is no need for
__GFP_ZERO.  Also doing a GFP_ATOMIC allocation just before a GFP_KERNEL
one is clearly bogus.

Fixes: ed870f6a7aa2 ("net: sgi: ioc3-eth: use dma-direct for dma allocations")
Signed-off-by: Christoph Hellwig <hch@....de>
Signed-off-by: Thomas Bogendoerfer <tbogendoerfer@...e.de>
---
 drivers/net/ethernet/sgi/ioc3-eth.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index 477af82bf8a9..8a684d882e63 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -1243,7 +1243,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	/* Allocate rx ring.  4kb = 512 entries, must be 4kb aligned */
 	ip->rxr = dma_alloc_coherent(ip->dma_dev, RX_RING_SIZE, &ip->rxr_dma,
-				     GFP_ATOMIC);
+				     GFP_KERNEL);
 	if (!ip->rxr) {
 		pr_err("ioc3-eth: rx ring allocation failed\n");
 		err = -ENOMEM;
@@ -1252,7 +1252,7 @@ static int ioc3_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	/* Allocate tx rings.  16kb = 128 bufs, must be 16kb aligned  */
 	ip->txr = dma_alloc_coherent(ip->dma_dev, TX_RING_SIZE, &ip->txr_dma,
-				     GFP_KERNEL | __GFP_ZERO);
+				     GFP_KERNEL);
 	if (!ip->txr) {
 		pr_err("ioc3-eth: tx ring allocation failed\n");
 		err = -ENOMEM;
-- 
2.16.4