diff options
| author |   Wang Dongsheng <dongsheng.wang@hxt-semitech.com> | 2018-01-22 20:25:06 -0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-01-24 16:32:29 -0500 |
| commit | df262dbdcc31f5a89b39ff86a617f8e72c7949dd (patch) | |
| tree | b882f651db9824dbf34d2c447f946d9c2857c890 /drivers/net/ethernet/qualcomm/emac/emac.c | |
| parent | ip_tunnel: Use mark in skb by default (diff) | |
| download | linux-dev-df262dbdcc31f5a89b39ff86a617f8e72c7949dd.tar.xz linux-dev-df262dbdcc31f5a89b39ff86a617f8e72c7949dd.zip | |
net: qcom/emac: extend DMA mask to 46bits
Bit TPD3[31] is used as a timestamp bit if PTP is enabled, but
it's used as an address bit if PTP is disabled. Since PTP isn't
supported by the driver, we can extend the DMA address to 46 bits.
Signed-off-by: Wang Dongsheng <dongsheng.wang@hxt-semitech.com>
Acked-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/ethernet/qualcomm/emac/emac.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c index 38c924bdd32e..13235baf4766 100644 --- a/drivers/net/ethernet/qualcomm/emac/emac.c +++ b/drivers/net/ethernet/qualcomm/emac/emac.c @@ -615,8 +615,11 @@ static int emac_probe(struct platform_device *pdev) u32 reg; int ret; - /* The TPD buffer address is limited to 45 bits. */ - ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(45)); + /* The TPD buffer address is limited to: + * 1. PTP: 45bits. (Driver doesn't support yet.) + * 2. NON-PTP: 46bits. + */ + ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(46)); if (ret) { dev_err(&pdev->dev, "could not set DMA mask\n"); return ret; |