Re: [PATCH v2 net-next 04/10] net: eth: altera: add optional function to start tx dma

From: Dalon Westergreen <redacted>

Allow for optional start up of tx dma if the start_txdma
function is defined in altera_dmaops.

Signed-off-by: Dalon Westergreen <redacted>
---
  drivers/net/ethernet/altera/altera_tse.h      | 1 +
  drivers/net/ethernet/altera/altera_tse_main.c | 5 +++++
  2 files changed, 6 insertions(+)

diff --git a/drivers/net/ethernet/altera/altera_tse.h b/drivers/net/ethernet/altera/altera_tse.h
index d5b97e02e6d6..7f246040135d 100644
--- a/drivers/net/ethernet/altera/altera_tse.h
+++ b/drivers/net/ethernet/altera/altera_tse.h

@@ -412,6 +412,7 @@ struct altera_dmaops {
  	int (*init_dma)(struct altera_tse_private *priv);
  	void (*uninit_dma)(struct altera_tse_private *priv);
  	void (*start_rxdma)(struct altera_tse_private *priv);
+	void (*start_txdma)(struct altera_tse_private *priv);
  };
  
  /* This structure is private to each device.

diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
index 0c0e8f9bba9b..f6b6a14b1ce9 100644
--- a/drivers/net/ethernet/altera/altera_tse_main.c
+++ b/drivers/net/ethernet/altera/altera_tse_main.c

@@ -1256,6 +1256,9 @@ static int tse_open(struct net_device *dev)
  
  	priv->dmaops->start_rxdma(priv);
  
+	if (priv->dmaops->start_txdma)
+		priv->dmaops->start_txdma(priv);
+
  	/* Start MAC Rx/Tx */
  	spin_lock(&priv->mac_cfg_lock);
  	tse_set_mac(priv, true);

@@ -1658,6 +1661,7 @@ static const struct altera_dmaops altera_dtype_sgdma = {
  	.init_dma = sgdma_initialize,
  	.uninit_dma = sgdma_uninitialize,
  	.start_rxdma = sgdma_start_rxdma,
+	.start_txdma = NULL,
  };
  
  static const struct altera_dmaops altera_dtype_msgdma = {

@@ -1677,6 +1681,7 @@ static const struct altera_dmaops altera_dtype_msgdma = {
  	.init_dma = msgdma_initialize,
  	.uninit_dma = msgdma_uninitialize,
  	.start_rxdma = msgdma_start_rxdma,
+	.start_txdma = NULL,
  };
  
  static const struct of_device_id altera_tse_ids[] = {