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| author | Yuiko Oshino <yuiko.oshino@microchip.com> | 2021-10-22 11:53:43 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-02 19:48:23 +0100 |
| commit | c2af2092c9bbb33c0131a8aca5b8f6db7c223d08 (patch) | |
| tree | 674c7c4a97463ee736cee5e6c38cbf51bf53934e | |
| parent | bfa6fbdb4e39b8483fd7ec70c4c82a5105348193 (diff) | |
| download | linux-stable-c2af2092c9bbb33c0131a8aca5b8f6db7c223d08.tar.gz linux-stable-c2af2092c9bbb33c0131a8aca5b8f6db7c223d08.tar.bz2 linux-stable-c2af2092c9bbb33c0131a8aca5b8f6db7c223d08.zip | |
net: ethernet: microchip: lan743x: Fix dma allocation failure by using dma_set_mask_and_coherent
commit 95a359c9553342d36d408d35331ff0bfce75272f upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_main.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/lan743x_main.c b/drivers/net/ethernet/microchip/lan743x_main.c index 79fd031f44eb..3355e0a5b272 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.c +++ b/drivers/net/ethernet/microchip/lan743x_main.c @@ -1770,6 +1770,16 @@ 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); @@ -2318,6 +2328,16 @@ 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); |