pch_can: Delete unnecessary/redundant code

Delete unnecessary/redundant code
Signed-off-by: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/can/pch_can.c

@@ -447,11 +447,6 @@ static void pch_can_release(struct pch_can_priv *priv)
 /* This function clears interrupt(s) from the CAN device. */
 static void pch_can_int_clr(struct pch_can_priv *priv, u32 mask)
 {
-	if (mask == PCH_STATUS_INT) {
-		ioread32(&priv->regs->stat);
-		return;
-	}
-
 	/* Clear interrupt for transmit object */
 	if ((mask >= PCH_RX_OBJ_START) && (mask <= PCH_RX_OBJ_END)) {
 		/* Setting CMASK for clearing the reception interrupts. */
@@ -512,8 +507,6 @@ static void pch_can_error(struct net_device *ndev, u32 status)
 		state = CAN_STATE_BUS_OFF;
 		cf->can_id |= CAN_ERR_BUSOFF;
 		can_bus_off(ndev);
-		pch_can_set_run_mode(priv, PCH_CAN_RUN);
-		dev_err(&ndev->dev, "%s -> Bus Off occurres.\n", __func__);
 	}
 
 	errc = ioread32(&priv->regs->errc);
@@ -747,7 +740,7 @@ static int pch_can_poll(struct napi_struct *napi, int quota)
 	if (!int_stat)
 		goto end;
 
-	if ((int_stat == PCH_STATUS_INT) && (quota > 0)) {
+	if (int_stat == PCH_STATUS_INT) {
 		reg_stat = ioread32(&priv->regs->stat);
 		if (reg_stat & (PCH_BUS_OFF | PCH_LEC_ALL)) {
 			if (reg_stat & PCH_BUS_OFF ||
@@ -933,10 +926,6 @@ static netdev_tx_t pch_xmit(struct sk_buff *skb, struct net_device *ndev)
 		priv->tx_obj++;
 	}
 
-	/* Reading the Msg Obj from the Msg RAM to the Interface register. */
-	iowrite32(PCH_CMASK_RX_TX_GET, &priv->regs->ifregs[1].cmask);
-	pch_can_rw_msg_obj(&priv->regs->ifregs[1].creq, tx_obj_no);
-
 	/* Setting the CMASK register. */
 	pch_can_bit_set(&priv->regs->ifregs[1].cmask, PCH_CMASK_ALL);