net: macb: Partial revert of "net: macb: Also set DMA coherent mask"

Author: popcornmix

drivers/net/ethernet/cadence/macb_main.c

@@ -2420,11 +2420,6 @@ static netdev_tx_t macb_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	skb_tx_timestamp(skb);
 
 	spin_lock_irq(&bp->lock);
-
-	/* TSTART write might get dropped, so make the IRQ retrigger a buffer read */
-	if (macb_readl(bp, TSR) & MACB_BIT(TGO))
-		queue->tx_pending = 1;
-
 	macb_writel(bp, NCR, macb_readl(bp, NCR) | MACB_BIT(TSTART));
 	spin_unlock_irq(&bp->lock);