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r8169: consider that 32 Bit DMA is the default

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Documentation/DMA-API-HOWTO.txt states:
By default, the kernel assumes that your device can address 32-bits of
DMA addressing. For a 64-bit capable device, this needs to be increased,
and for a device with limitations, it needs to be decreased.

Therefore we don't need the 32 Bit DMA fallback configuration and can
remove it.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Heiner Kallweit 2019-06-27 23:12:39 +02:00 committed by David S. Miller
parent 759d095741
commit 3c18cbe337
1 changed files with 1 additions and 8 deletions
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9
drivers/net/ethernet/realtek/r8169_main.c
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@ -6724,15 +6724,8 @@ static int rtl_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
tp->cp_cmd = RTL_R16(tp, CPlusCmd);
if (sizeof(dma_addr_t) > 4 && tp->mac_version >= RTL_GIGA_MAC_VER_18 &&
!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64))) {
!dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)))
dev->features |= NETIF_F_HIGHDMA;
} else {
rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
if (rc < 0) {
dev_err(&pdev->dev, "DMA configuration failed\n");
return rc;
}
}
rtl_init_rxcfg(tp);