net: at91_can: fix the comments style issue

Networking block comments don't use an empty /* line,
use /* Comment...

Block comments use * on subsequent lines.
Block comments use a trailing */ on a separate line.

This patch fixes the comments style issues.

Link: https://lore.kernel.org/r/1624096589-13452-9-git-send-email-huangguangbin2@huawei.com
Signed-off-by: Peng Li <lipeng321@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>

diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c
index 3709152e96954a9ee37f90b778c77c3d693fcd97..b06af90a996408118e660e7c9e391f191dfb582c 100644 (file)
--- a/drivers/net/can/at91_can.c
+++ b/drivers/net/can/at91_can.c
@@ -317,8 +317,7 @@ static void at91_setup_mailboxes(struct net_device *dev)
        unsigned int i;
        u32 reg_mid;
 
-       /*
-        * Due to a chip bug (errata 50.2.6.3 & 50.3.5.3) the first
+       /* Due to a chip bug (errata 50.2.6.3 & 50.3.5.3) the first
         * mailbox is disabled. The next 11 mailboxes are used as a
         * reception FIFO. The last mailbox is configured with
         * overwrite option. The overwrite flag indicates a FIFO
@@ -424,8 +423,7 @@ static void at91_chip_stop(struct net_device *dev, enum can_state state)
        priv->can.state = state;
 }
 
-/*
- * theory of operation:
+/* theory of operation:
  *
  * According to the datasheet priority 0 is the highest priority, 15
  * is the lowest. If two mailboxes have the same priority level the
@@ -487,8 +485,7 @@ static netdev_tx_t at91_start_xmit(struct sk_buff *skb, struct net_device *dev)
        /* _NOTE_: subtract AT91_MB_TX_FIRST offset from mb! */
        can_put_echo_skb(skb, dev, mb - get_mb_tx_first(priv), 0);
 
-       /*
-        * we have to stop the queue and deliver all messages in case
+       /* we have to stop the queue and deliver all messages in case
         * of a prio+mb counter wrap around. This is the case if
         * tx_next buffer prio and mailbox equals 0.
         *
@@ -799,8 +796,7 @@ static int at91_poll(struct napi_struct *napi, int quota)
        if (reg_sr & get_irq_mb_rx(priv))
                work_done += at91_poll_rx(dev, quota - work_done);
 
-       /*
-        * The error bits are clear on read,
+       /* The error bits are clear on read,
         * so use saved value from irq handler.
         */
        reg_sr |= priv->reg_sr;
@@ -820,8 +816,7 @@ static int at91_poll(struct napi_struct *napi, int quota)
        return work_done;
 }
 
-/*
- * theory of operation:
+/* theory of operation:
  *
  * priv->tx_echo holds the number of the oldest can_frame put for
  * transmission into the hardware, but not yet ACKed by the CAN tx
@@ -850,8 +845,7 @@ static void at91_irq_tx(struct net_device *dev, u32 reg_sr)
                /* Disable irq for this TX mailbox */
                at91_write(priv, AT91_IDR, 1 << mb);
 
-               /*
-                * only echo if mailbox signals us a transfer
+               /* only echo if mailbox signals us a transfer
                 * complete (MSR_MRDY). Otherwise it's a tansfer
                 * abort. "can_bus_off()" takes care about the skbs
                 * parked in the echo queue.
@@ -866,8 +860,7 @@ static void at91_irq_tx(struct net_device *dev, u32 reg_sr)
                }
        }
 
-       /*
-        * restart queue if we don't have a wrap around but restart if
+       /* restart queue if we don't have a wrap around but restart if
         * we get a TX int for the last can frame directly before a
         * wrap around.
         */
@@ -887,8 +880,7 @@ static void at91_irq_err_state(struct net_device *dev,
 
        switch (priv->can.state) {
        case CAN_STATE_ERROR_ACTIVE:
-               /*
-                * from: ERROR_ACTIVE
+               /* from: ERROR_ACTIVE
                 * to  : ERROR_WARNING, ERROR_PASSIVE, BUS_OFF
                 * =>  : there was a warning int
                 */
@@ -904,8 +896,7 @@ static void at91_irq_err_state(struct net_device *dev,
                }
                fallthrough;
        case CAN_STATE_ERROR_WARNING:
-               /*
-                * from: ERROR_ACTIVE, ERROR_WARNING
+               /* from: ERROR_ACTIVE, ERROR_WARNING
                 * to  : ERROR_PASSIVE, BUS_OFF
                 * =>  : error passive int
                 */
@@ -921,8 +912,7 @@ static void at91_irq_err_state(struct net_device *dev,
                }
                break;
        case CAN_STATE_BUS_OFF:
-               /*
-                * from: BUS_OFF
+               /* from: BUS_OFF
                 * to  : ERROR_ACTIVE, ERROR_WARNING, ERROR_PASSIVE
                 */
                if (new_state <= CAN_STATE_ERROR_PASSIVE) {
@@ -942,8 +932,7 @@ static void at91_irq_err_state(struct net_device *dev,
        /* process state changes depending on the new state */
        switch (new_state) {
        case CAN_STATE_ERROR_ACTIVE:
-               /*
-                * actually we want to enable AT91_IRQ_WARN here, but
+               /* actually we want to enable AT91_IRQ_WARN here, but
                 * it screws up the system under certain
                 * circumstances. so just enable AT91_IRQ_ERRP, thus
                 * the "fallthrough"
@@ -1055,8 +1044,7 @@ static void at91_irq_err(struct net_device *dev)
        priv->can.state = new_state;
 }
 
-/*
- * interrupt handler
+/* interrupt handler
  */
 static irqreturn_t at91_irq(int irq, void *dev_id)
 {
@@ -1077,8 +1065,7 @@ static irqreturn_t at91_irq(int irq, void *dev_id)
 
        /* Receive or error interrupt? -> napi */
        if (reg_sr & (get_irq_mb_rx(priv) | AT91_IRQ_ERR_FRAME)) {
-               /*
-                * The error bits are clear on read,
+               /* The error bits are clear on read,
                 * save for later use.
                 */
                priv->reg_sr = reg_sr;
@@ -1135,8 +1122,7 @@ static int at91_open(struct net_device *dev)
        return err;
 }
 
-/*
- * stop CAN bus activity
+/* stop CAN bus activity
  */
 static int at91_close(struct net_device *dev)
 {