netdev - [PATCH net] macsonic: Set platform device coherent_dma

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Date:   Thu, 03 May 2018 14:24:09 +1000
From:   Finn Thain <fthain@...egraphics.com.au>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     linux-m68k@...ts.linux-m68k.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH net] macsonic: Set platform device coherent_dma_mask

Set the device's coherent_dma_mask to avoid a WARNING splat.
Please see commit 205e1b7f51e4 ("dma-mapping: warn when there is
no coherent_dma_mask").

Cc: linux-m68k@...ts.linux-m68k.org
Signed-off-by: Finn Thain <fthain@...egraphics.com.au>
---
 drivers/net/ethernet/natsemi/macsonic.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/natsemi/macsonic.c b/drivers/net/ethernet/natsemi/macsonic.c
index 0937fc2a928e..37b1ffa8bb61 100644
--- a/drivers/net/ethernet/natsemi/macsonic.c
+++ b/drivers/net/ethernet/natsemi/macsonic.c
@@ -523,6 +523,10 @@ static int mac_sonic_platform_probe(struct platform_device *pdev)
 	struct sonic_local *lp;
 	int err;
 
+	err = dma_coerce_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32));
+	if (err)
+		return err;
+
 	dev = alloc_etherdev(sizeof(struct sonic_local));
 	if (!dev)
 		return -ENOMEM;
-- 
2.16.1