net: rtl8139: Minor cleanup of rtl_reset()

Rename the function to rtl8139_reset(), clean up the reset polling
and various line-over-80 problems. No functional change.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>

diff --git a/drivers/net/rtl8139.c b/drivers/net/rtl8139.c
index 4dfb709..d9d8aae 100644 (file)
--- a/drivers/net/rtl8139.c
+++ b/drivers/net/rtl8139.c
@@ -200,7 +200,7 @@ static unsigned char rx_ring[RX_BUF_LEN+16] __attribute__((aligned(4)));
 
 static int rtl8139_probe(struct eth_device *dev, bd_t *bis);
 static int rtl8139_read_eeprom(unsigned int location, unsigned int addr_len);
-static void rtl_reset(struct eth_device *dev);
+static void rtl8139_reset(struct eth_device *dev);
 static int rtl_transmit(struct eth_device *dev, void *packet, int length);
 static int rtl_poll(struct eth_device *dev);
 static void rtl_disable(struct eth_device *dev);
@@ -277,7 +277,7 @@ static int rtl8139_probe(struct eth_device *dev, bd_t *bis)
        for (i = 0; i < 3; i++)
                *ap++ = le16_to_cpu (rtl8139_read_eeprom(i + 7, addr_len));
 
-       rtl_reset(dev);
+       rtl8139_reset(dev);
 
        if (inb(ioaddr + RTL_REG_MEDIASTATUS) & RTL_REG_MEDIASTATUS_MSRLINKFAIL) {
                printf("Cable not connected or other link failure\n");
@@ -370,8 +370,9 @@ static void rtl8139_set_rx_mode(struct eth_device *dev)
        outl(0xffffffff, ioaddr + RTL_REG_MAR0 + 4);
 }
 
-static void rtl_reset(struct eth_device *dev)
+static void rtl8139_reset(struct eth_device *dev)
 {
+       u8 reg;
        int i;
 
        outb(RTL_REG_CHIPCMD_CMDRESET, ioaddr + RTL_REG_CHIPCMD);
@@ -380,11 +381,12 @@ static void rtl_reset(struct eth_device *dev)
        cur_tx = 0;
 
        /* Give the chip 10ms to finish the reset. */
-       for (i=0; i<100; ++i){
-               if ((inb(ioaddr + RTL_REG_CHIPCMD) &
-                    RTL_REG_CHIPCMD_CMDRESET) == 0)
+       for (i = 0; i < 100; i++) {
+               reg = inb(ioaddr + RTL_REG_CHIPCMD);
+               if (!(reg & RTL_REG_CHIPCMD_CMDRESET))
                        break;
-               udelay (100); /* wait 100us */
+
+               udelay(100);
        }
 
 
@@ -393,30 +395,35 @@ static void rtl_reset(struct eth_device *dev)
 
        /* Must enable Tx/Rx before setting transfer thresholds! */
        outb(RTL_REG_CHIPCMD_CMDRXENB | RTL_REG_CHIPCMD_CMDTXENB,
-               ioaddr + RTL_REG_CHIPCMD);
+            ioaddr + RTL_REG_CHIPCMD);
+
        /* accept no frames yet! */
        outl(rtl8139_rx_config, ioaddr + RTL_REG_RXCONFIG);
-       outl((TX_DMA_BURST<<8)|0x03000000, ioaddr + RTL_REG_TXCONFIG);
-
-       /* The Linux driver changes RTL_REG_CONFIG1 here to use a different LED pattern
-        * for half duplex or full/autodetect duplex (for full/autodetect, the
-        * outputs are TX/RX, Link10/100, FULL, while for half duplex it uses
-        * TX/RX, Link100, Link10).  This is messy, because it doesn't match
-        * the inscription on the mounting bracket.  It should not be changed
-        * from the configuration EEPROM default, because the card manufacturer
-        * should have set that to match the card.  */
-
-       debug_cond(DEBUG_RX,
-               "rx ring address is %lX\n",(unsigned long)rx_ring);
+       outl((TX_DMA_BURST << 8) | 0x03000000, ioaddr + RTL_REG_TXCONFIG);
+
+       /*
+        * The Linux driver changes RTL_REG_CONFIG1 here to use a different
+        * LED pattern for half duplex or full/autodetect duplex (for
+        * full/autodetect, the outputs are TX/RX, Link10/100, FULL, while
+        * for half duplex it uses TX/RX, Link100, Link10).  This is messy,
+        * because it doesn't match the inscription on the mounting bracket.
+        * It should not be changed from the configuration EEPROM default,
+        * because the card manufacturer should have set that to match the
+        * card.
+        */
+       debug_cond(DEBUG_RX, "rx ring address is %p\n", rx_ring);
+
        flush_cache((unsigned long)rx_ring, RX_BUF_LEN);
        outl(phys_to_bus((int)rx_ring), ioaddr + RTL_REG_RXBUF);
 
-       /* If we add multicast support, the RTL_REG_MAR0 register would have to be
-        * initialized to 0xffffffffffffffff (two 32 bit accesses).  Etherboot
-        * only needs broadcast (for ARP/RARP/BOOTP/DHCP) and unicast.  */
-
+       /*
+        * If we add multicast support, the RTL_REG_MAR0 register would have
+        * to be initialized to 0xffffffffffffffff (two 32 bit accesses).
+        * Etherboot only needs broadcast (for ARP/RARP/BOOTP/DHCP) and
+        * unicast.
+        */
        outb(RTL_REG_CHIPCMD_CMDRXENB | RTL_REG_CHIPCMD_CMDTXENB,
-               ioaddr + RTL_REG_CHIPCMD);
+            ioaddr + RTL_REG_CHIPCMD);
 
        outl(rtl8139_rx_config, ioaddr + RTL_REG_RXCONFIG);
 
@@ -488,7 +495,7 @@ static int rtl_transmit(struct eth_device *dev, void *packet, int length)
                        "tx timeout/error (%d usecs), status %hX txstatus %lX\n",
                        10*i, status, txstatus);
 
-               rtl_reset(dev);
+               rtl8139_reset(dev);
 
                return 0;
        }
@@ -527,7 +534,7 @@ static int rtl_poll(struct eth_device *dev)
                          RTL_STS_RXBADALIGN)) ||
            (rx_size < ETH_ZLEN) || (rx_size > ETH_FRAME_LEN + 4)) {
                printf("rx error %hX\n", rx_status);
-               rtl_reset(dev); /* this clears all interrupts still pending */
+               rtl8139_reset(dev); /* this clears all interrupts still pending */
                return 0;
        }