diff options
| -rw-r--r-- | drivers/net/ti/am65-cpsw-nuss.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ti/am65-cpsw-nuss.c b/drivers/net/ti/am65-cpsw-nuss.c index 335c8be..e0968f6 100644 --- a/drivers/net/ti/am65-cpsw-nuss.c +++ b/drivers/net/ti/am65-cpsw-nuss.c @@ -327,6 +327,9 @@ static int am65_cpsw_start(struct udevice *dev) struct ti_udma_drv_chan_cfg_data *dma_rx_cfg_data; int ret, i; + if (common->started) + return 0; + ret = power_domain_on(&common->pwrdmn); if (ret) { dev_err(dev, "power_domain_on() failed %d\n", ret); @@ -487,6 +490,9 @@ static int am65_cpsw_send(struct udevice *dev, void *packet, int length) struct ti_udma_drv_packet_data packet_data; int ret; + if (!common->started) + return -ENETDOWN; + packet_data.pkt_type = AM65_CPSW_CPPI_PKT_TYPE; packet_data.dest_tag = priv->port_id; ret = dma_send(&common->dma_tx, packet, length, &packet_data); @@ -503,6 +509,9 @@ static int am65_cpsw_recv(struct udevice *dev, int flags, uchar **packetp) struct am65_cpsw_priv *priv = dev_get_priv(dev); struct am65_cpsw_common *common = priv->cpsw_common; + if (!common->started) + return -ENETDOWN; + /* try to receive a new packet */ return dma_receive(&common->dma_rx, (void **)packetp, NULL); } |