pch_can: Comment optimization

Comment optimization

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

diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c
index c500b6d..a1fd3be 100644 (file)
--- a/drivers/net/can/pch_can.c
+++ b/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);