diff options
| author | Jonas Gorski <jonas.gorski@gmail.com> | 2017-10-01 13:02:16 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-01 23:05:10 -0700 |
| commit | d6213c1f2ad54a964b77471690264ed685718928 (patch) | |
| tree | f8a03cbdfa35821f1cad1d6983300663ce617d4b /drivers/net/ethernet/broadcom/bcm63xx_enet.c | |
| parent | 9c86b846ce02f7e35d7234cf090b80553eba5389 (diff) | |
bcm63xx_enet: do not write to random DMA channel on BCM6345
The DMA controller regs actually point to DMA channel 0, so the write to
ENETDMA_CFG_REG will actually modify a random DMA channel.
Since DMA controller registers do not exist on BCM6345, guard the write
with the usual check for dma_has_sram.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bcm63xx_enet.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bcm63xx_enet.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/net/ethernet/broadcom/bcm63xx_enet.c b/drivers/net/ethernet/broadcom/bcm63xx_enet.c index a45ec97b5b1e..a1e1e12e187a 100644 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c @@ -1062,7 +1062,8 @@ static int bcm_enet_open(struct net_device *dev) val = enet_readl(priv, ENET_CTL_REG); val |= ENET_CTL_ENABLE_MASK; enet_writel(priv, val, ENET_CTL_REG); - enet_dma_writel(priv, ENETDMA_CFG_EN_MASK, ENETDMA_CFG_REG); + if (priv->dma_has_sram) + enet_dma_writel(priv, ENETDMA_CFG_EN_MASK, ENETDMA_CFG_REG); enet_dmac_writel(priv, priv->dma_chan_en_mask, ENETDMAC_CHANCFG, priv->rx_chan); |