pch_can: Comment optimization

Comment optimization
Signed-off-by: NTomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/can/pch_can.c

@@ -292,7 +292,7 @@ static void pch_can_set_rxtx(struct pch_can_priv *priv, u32 buff_num,
 	else
 		ie = PCH_IF_MCONT_RXIE;
 
-	/* Reading the receive buffer data from RAM to Interface1/2 registers */
+	/* Reading the Msg buffer from Message RAM to IF1/2 registers. */
 	iowrite32(PCH_CMASK_RX_TX_GET, &priv->regs->ifregs[dir].cmask);
 	pch_can_rw_msg_obj(&priv->regs->ifregs[dir].creq, buff_num);
 
@@ -854,7 +854,7 @@ static int pch_can_open(struct net_device *ndev)
 		priv->use_msi = 1;
 	}
 
-	/* Regsitering the interrupt. */
+	/* Regstering the interrupt. */
 	retval = request_irq(priv->dev->irq, pch_can_interrupt, IRQF_SHARED,
 			     ndev->name, ndev);
 	if (retval) {
@@ -954,7 +954,7 @@ static netdev_tx_t pch_xmit(struct sk_buff *skb, struct net_device *ndev)
 
 	can_put_echo_skb(skb, ndev, tx_obj_no - PCH_RX_OBJ_END - 1);
 
-	/* Updating the size of the data. */
+	/* Set the size of the data. Update if2_mcont */
 	iowrite32(cf->can_dlc | PCH_IF_MCONT_NEWDAT | PCH_IF_MCONT_TXRQXT |
 		  PCH_IF_MCONT_TXIE, &priv->regs->ifregs[1].mcont);
 
@@ -1061,8 +1061,8 @@ static int pch_can_get_buffer_status(struct pch_can_priv *priv)
 
 static int pch_can_suspend(struct pci_dev *pdev, pm_message_t state)
 {
-	int i;			/* Counter variable. */
-	int retval;		/* Return value. */
+	int i;
+	int retval;
 	u32 buf_stat;	/* Variable for reading the transmit buffer status. */
 	int counter = PCH_COUNTER_LIMIT;
 
@@ -1119,8 +1119,8 @@ static int pch_can_suspend(struct pci_dev *pdev, pm_message_t state)
 
 static int pch_can_resume(struct pci_dev *pdev)
 {
-	int i;			/* Counter variable. */
-	int retval;		/* Return variable. */
+	int i;
+	int retval;
 	struct net_device *dev = pci_get_drvdata(pdev);
 	struct pch_can_priv *priv = netdev_priv(dev);