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net: ethernet: microchip: lan743x: Fix dma allocation failure by using dma_set_mask_and_coherent

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The dma failure was reported in the raspberry pi github (issue #4117).
https://github.com/raspberrypi/linux/issues/4117
The use of dma_set_mask_and_coherent fixes the issue.
Tested on 32/64-bit raspberry pi CM4 and 64-bit ubuntu x86 PC with EVB-LAN7430.

Fixes: 23f0703c125b ("lan743x: Add main source files for new lan743x driver")
Signed-off-by: Yuiko Oshino <yuiko.oshino@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yuiko Oshino 2021-10-22 11:53:43 -04:00 committed by David S. Miller
parent d6423d2ec3
commit 95a359c955
1 changed files with 20 additions and 0 deletions
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20
drivers/net/ethernet/microchip/lan743x_main.c
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@ -1743,6 +1743,16 @@ static int lan743x_tx_ring_init(struct lan743x_tx *tx)
ret = -EINVAL;
goto cleanup;
}
if (dma_set_mask_and_coherent(&tx->adapter->pdev->dev,
DMA_BIT_MASK(64))) {
if (dma_set_mask_and_coherent(&tx->adapter->pdev->dev,
DMA_BIT_MASK(32))) {
dev_warn(&tx->adapter->pdev->dev,
"lan743x_: No suitable DMA available\n");
ret = -ENOMEM;
goto cleanup;
}
}
ring_allocation_size = ALIGN(tx->ring_size *
sizeof(struct lan743x_tx_descriptor),
PAGE_SIZE);
@ -2276,6 +2286,16 @@ static int lan743x_rx_ring_init(struct lan743x_rx *rx)
ret = -EINVAL;
goto cleanup;
}
if (dma_set_mask_and_coherent(&rx->adapter->pdev->dev,
DMA_BIT_MASK(64))) {
if (dma_set_mask_and_coherent(&rx->adapter->pdev->dev,
DMA_BIT_MASK(32))) {
dev_warn(&rx->adapter->pdev->dev,
"lan743x_: No suitable DMA available\n");
ret = -ENOMEM;
goto cleanup;
}
}
ring_allocation_size = ALIGN(rx->ring_size *
sizeof(struct lan743x_rx_descriptor),
PAGE_SIZE);