netdev - [PATCH net-next 4/5] tsnep: Support full DMA mask

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Message-Id: <20220817193017.44063-5-gerhard@engleder-embedded.com>
Date:   Wed, 17 Aug 2022 21:30:16 +0200
From:   Gerhard Engleder <gerhard@...leder-embedded.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     netdev@...r.kernel.org,
        Gerhard Engleder <gerhard@...leder-embedded.com>
Subject: [PATCH net-next 4/5] tsnep: Support full DMA mask

DMA addresses up to 64bit are supported by the device. Configure DMA
mask according to the capabilities of the device.

Signed-off-by: Gerhard Engleder <gerhard@...leder-embedded.com>
---
 drivers/net/ethernet/engleder/tsnep_main.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/engleder/tsnep_main.c b/drivers/net/ethernet/engleder/tsnep_main.c
index 9f8ca6d9a010..415ae6a4b32c 100644
--- a/drivers/net/ethernet/engleder/tsnep_main.c
+++ b/drivers/net/ethernet/engleder/tsnep_main.c
@@ -1239,6 +1239,13 @@ static int tsnep_probe(struct platform_device *pdev)
 	adapter->queue[0].rx = &adapter->rx[0];
 	adapter->queue[0].irq_mask = ECM_INT_TX_0 | ECM_INT_RX_0;
 
+	retval = dma_set_mask_and_coherent(&adapter->pdev->dev,
+					   DMA_BIT_MASK(64));
+	if (retval) {
+		dev_err(&adapter->pdev->dev, "no usable DMA configuration.\n");
+		return retval;
+	}
+
 	tsnep_disable_irq(adapter, ECM_INT_ALL);
 	retval = devm_request_irq(&adapter->pdev->dev, adapter->irq, tsnep_irq,
 				  0, TSNEP, adapter);
-- 
2.30.2