diff options
| author | Jonas Gorski <jonas.gorski@gmail.com> | 2017-10-01 13:02:16 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-22 14:25:52 +0200 |
| commit | 3bed835ab1ec95a7a1ea83c02ee21e6e420050b3 (patch) | |
| tree | 60b0dce160b9d1b9c909ad53cc08c7542f285802 /drivers | |
| parent | 3e18265e43138f685cd78a4b1c92dd788e32e2fa (diff) | |
bcm63xx_enet: do not write to random DMA channel on BCM6345
commit d6213c1f2ad54a964b77471690264ed685718928 upstream.
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>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -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 ee4f38d0c105..ec5834087e4b 100644 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c @@ -1063,7 +1063,8 @@ 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); |