rrunner: use offsetof() instead of homegrown insanity

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

diff --git a/drivers/net/rrunner.c b/drivers/net/rrunner.c
index 73a7e65..55a590a 100644 (file)
--- a/drivers/net/rrunner.c
+++ b/drivers/net/rrunner.c
@@ -294,7 +294,6 @@ static int rr_reset(struct net_device *dev)
 {
        struct rr_private *rrpriv;
        struct rr_regs __iomem *regs;
-       struct eeprom *hw = NULL;
        u32 start_pc;
        int i;
 
@@ -381,7 +380,8 @@ static int rr_reset(struct net_device *dev)
        writel(RBURST_64|WBURST_64, &regs->PciState);
        wmb();
 
-       start_pc = rr_read_eeprom_word(rrpriv, &hw->rncd_info.FwStart);
+       start_pc = rr_read_eeprom_word(rrpriv,
+                       offsetof(struct eeprom, rncd_info.FwStart));
 
 #if (DEBUG > 1)
        printk("%s: Executing firmware at address 0x%06x\n",
@@ -438,12 +438,12 @@ static unsigned int rr_read_eeprom(struct rr_private *rrpriv,
  * it to our CPU byte-order.
  */
 static u32 rr_read_eeprom_word(struct rr_private *rrpriv,
-                           void * offset)
+                           size_t offset)
 {
-       u32 word;
+       __be32 word;
 
-       if ((rr_read_eeprom(rrpriv, (unsigned long)offset,
-                           (char *)&word, 4) == 4))
+       if ((rr_read_eeprom(rrpriv, offset,
+                           (unsigned char *)&word, 4) == 4))
                return be32_to_cpu(word);
        return 0;
 }
@@ -510,7 +510,6 @@ static int __devinit rr_init(struct net_device *dev)
 {
        struct rr_private *rrpriv;
        struct rr_regs __iomem *regs;
-       struct eeprom *hw = NULL;
        u32 sram_size, rev;
        DECLARE_MAC_BUF(mac);
 
@@ -545,14 +544,14 @@ static int __devinit rr_init(struct net_device *dev)
         * other method I've seen.  -VAL
         */
 
-       *(u16 *)(dev->dev_addr) =
-         htons(rr_read_eeprom_word(rrpriv, &hw->manf.BoardULA));
-       *(u32 *)(dev->dev_addr+2) =
-         htonl(rr_read_eeprom_word(rrpriv, &hw->manf.BoardULA[4]));
+       *(__be16 *)(dev->dev_addr) =
+         htons(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA)));
+       *(__be32 *)(dev->dev_addr+2) =
+         htonl(rr_read_eeprom_word(rrpriv, offsetof(struct eeprom, manf.BoardULA[4])));
 
        printk("  MAC: %s\n", print_mac(mac, dev->dev_addr));
 
-       sram_size = rr_read_eeprom_word(rrpriv, (void *)8);
+       sram_size = rr_read_eeprom_word(rrpriv, 8);
        printk("  SRAM size 0x%06x\n", sram_size);
 
        return 0;
@@ -1477,11 +1476,10 @@ static int rr_load_firmware(struct net_device *dev)
 {
        struct rr_private *rrpriv;
        struct rr_regs __iomem *regs;
-       unsigned long eptr, segptr;
+       size_t eptr, segptr;
        int i, j;
        u32 localctrl, sptr, len, tmp;
        u32 p2len, p2size, nr_seg, revision, io, sram_size;
-       struct eeprom *hw = NULL;
 
        rrpriv = netdev_priv(dev);
        regs = rrpriv->regs;
@@ -1509,7 +1507,7 @@ static int rr_load_firmware(struct net_device *dev)
         */
        io = readl(&regs->ExtIo);
        writel(0, &regs->ExtIo);
-       sram_size = rr_read_eeprom_word(rrpriv, (void *)8);
+       sram_size = rr_read_eeprom_word(rrpriv, 8);
 
        for (i = 200; i < sram_size / 4; i++){
                writel(i * 4, &regs->WinBase);
@@ -1520,13 +1518,13 @@ static int rr_load_firmware(struct net_device *dev)
        writel(io, &regs->ExtIo);
        mb();
 
-       eptr = (unsigned long)rr_read_eeprom_word(rrpriv,
-                                              &hw->rncd_info.AddrRunCodeSegs);
+       eptr = rr_read_eeprom_word(rrpriv,
+                      offsetof(struct eeprom, rncd_info.AddrRunCodeSegs));
        eptr = ((eptr & 0x1fffff) >> 3);
 
-       p2len = rr_read_eeprom_word(rrpriv, (void *)(0x83*4));
+       p2len = rr_read_eeprom_word(rrpriv, 0x83*4);
        p2len = (p2len << 2);
-       p2size = rr_read_eeprom_word(rrpriv, (void *)(0x84*4));
+       p2size = rr_read_eeprom_word(rrpriv, 0x84*4);
        p2size = ((p2size & 0x1fffff) >> 3);
 
        if ((eptr < p2size) || (eptr > (p2size + p2len))){
@@ -1534,7 +1532,8 @@ static int rr_load_firmware(struct net_device *dev)
                goto out;
        }
 
-       revision = rr_read_eeprom_word(rrpriv, &hw->manf.HeaderFmt);
+       revision = rr_read_eeprom_word(rrpriv,
+                       offsetof(struct eeprom, manf.HeaderFmt));
 
        if (revision != 1){
                printk("%s: invalid firmware format (%i)\n",
@@ -1542,18 +1541,18 @@ static int rr_load_firmware(struct net_device *dev)
                goto out;
        }
 
-       nr_seg = rr_read_eeprom_word(rrpriv, (void *)eptr);
+       nr_seg = rr_read_eeprom_word(rrpriv, eptr);
        eptr +=4;
 #if (DEBUG > 1)
        printk("%s: nr_seg %i\n", dev->name, nr_seg);
 #endif
 
        for (i = 0; i < nr_seg; i++){
-               sptr = rr_read_eeprom_word(rrpriv, (void *)eptr);
+               sptr = rr_read_eeprom_word(rrpriv, eptr);
                eptr += 4;
-               len = rr_read_eeprom_word(rrpriv, (void *)eptr);
+               len = rr_read_eeprom_word(rrpriv, eptr);
                eptr += 4;
-               segptr = (unsigned long)rr_read_eeprom_word(rrpriv, (void *)eptr);
+               segptr = rr_read_eeprom_word(rrpriv, eptr);
                segptr = ((segptr & 0x1fffff) >> 3);
                eptr += 4;
 #if (DEBUG > 1)
@@ -1561,7 +1560,7 @@ static int rr_load_firmware(struct net_device *dev)
                       dev->name, i, sptr, len, segptr);
 #endif
                for (j = 0; j < len; j++){
-                       tmp = rr_read_eeprom_word(rrpriv, (void *)segptr);
+                       tmp = rr_read_eeprom_word(rrpriv, segptr);
                        writel(sptr, &regs->WinBase);
                        mb();
                        writel(tmp, &regs->WinData);

diff --git a/drivers/net/rrunner.h b/drivers/net/rrunner.h
index 6a79825..6173f11 100644 (file)
--- a/drivers/net/rrunner.h
+++ b/drivers/net/rrunner.h
@@ -838,7 +838,7 @@ static unsigned int rr_read_eeprom(struct rr_private *rrpriv,
                                   unsigned long offset,
                                   unsigned char *buf,
                                   unsigned long length);
-static u32 rr_read_eeprom_word(struct rr_private *rrpriv, void * offset);
+static u32 rr_read_eeprom_word(struct rr_private *rrpriv, size_t offset);
 static int rr_load_firmware(struct net_device *dev);
 static inline void rr_raz_tx(struct rr_private *, struct net_device *);
 static inline void rr_raz_rx(struct rr_private *, struct net_device *);