[PATCH net] macsonic: Set platform device coherent_dma_mask

[Finn Thain]

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-m...@lists.linux-m68k.org
Signed-off-by: Finn Thain <fth...@telegraphics.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