pcnet32: constify function table

Function tables need to be const to prevent malicious use.

This is compile tested only.
Gleaned from PAX.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/amd/pcnet32.c b/drivers/net/ethernet/amd/pcnet32.c
index c90fe917090bed66b345f27aabc792fd85b313af..f92bc6e348283f2bb026ffcce0f37ddd07eb4359 100644 (file)
--- a/drivers/net/ethernet/amd/pcnet32.c
+++ b/drivers/net/ethernet/amd/pcnet32.c
@@ -270,7 +270,7 @@ struct pcnet32_private {
        struct sk_buff          **rx_skbuff;
        dma_addr_t              *tx_dma_addr;
        dma_addr_t              *rx_dma_addr;
-       struct pcnet32_access   a;
+       const struct pcnet32_access *a;
        spinlock_t              lock;           /* Guard lock */
        unsigned int            cur_rx, cur_tx; /* The next free ring entry */
        unsigned int            rx_ring_size;   /* current rx ring size */
@@ -379,7 +379,7 @@ static int pcnet32_wio_check(unsigned long addr)
        return inw(addr + PCNET32_WIO_RAP) == 88;
 }
 
-static struct pcnet32_access pcnet32_wio = {
+static const struct pcnet32_access pcnet32_wio = {
        .read_csr = pcnet32_wio_read_csr,
        .write_csr = pcnet32_wio_write_csr,
        .read_bcr = pcnet32_wio_read_bcr,
@@ -434,7 +434,7 @@ static int pcnet32_dwio_check(unsigned long addr)
        return (inl(addr + PCNET32_DWIO_RAP) & 0xffff) == 88;
 }
 
-static struct pcnet32_access pcnet32_dwio = {
+static const struct pcnet32_access pcnet32_dwio = {
        .read_csr = pcnet32_dwio_read_csr,
        .write_csr = pcnet32_dwio_write_csr,
        .read_bcr = pcnet32_dwio_read_bcr,
@@ -460,9 +460,9 @@ static void pcnet32_netif_start(struct net_device *dev)
        u16 val;
 
        netif_wake_queue(dev);
-       val = lp->a.read_csr(ioaddr, CSR3);
+       val = lp->a->read_csr(ioaddr, CSR3);
        val &= 0x00ff;
-       lp->a.write_csr(ioaddr, CSR3, val);
+       lp->a->write_csr(ioaddr, CSR3, val);
        napi_enable(&lp->napi);
 }
 
@@ -730,7 +730,7 @@ static u32 pcnet32_get_link(struct net_device *dev)
                r = mii_link_ok(&lp->mii_if);
        } else if (lp->chip_version >= PCNET32_79C970A) {
                ulong ioaddr = dev->base_addr;  /* card base I/O address */
-               r = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
+               r = (lp->a->read_bcr(ioaddr, 4) != 0xc0);
        } else {        /* can not detect link on really old chips */
                r = 1;
        }
@@ -792,7 +792,7 @@ static int pcnet32_set_ringparam(struct net_device *dev,
                pcnet32_netif_stop(dev);
 
        spin_lock_irqsave(&lp->lock, flags);
-       lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);       /* stop the chip */
+       lp->a->write_csr(ioaddr, CSR0, CSR0_STOP);      /* stop the chip */
 
        size = min(ering->tx_pending, (unsigned int)TX_MAX_RING_SIZE);
 
@@ -868,7 +868,7 @@ static void pcnet32_ethtool_test(struct net_device *dev,
 static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)
 {
        struct pcnet32_private *lp = netdev_priv(dev);
-       struct pcnet32_access *a = &lp->a;      /* access to registers */
+       const struct pcnet32_access *a = lp->a; /* access to registers */
        ulong ioaddr = dev->base_addr;  /* card base I/O address */
        struct sk_buff *skb;    /* sk buff */
        int x, i;               /* counters */
@@ -888,21 +888,21 @@ static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)
                pcnet32_netif_stop(dev);
 
        spin_lock_irqsave(&lp->lock, flags);
-       lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);       /* stop the chip */
+       lp->a->write_csr(ioaddr, CSR0, CSR0_STOP);      /* stop the chip */
 
        numbuffs = min(numbuffs, (int)min(lp->rx_ring_size, lp->tx_ring_size));
 
        /* Reset the PCNET32 */
-       lp->a.reset(ioaddr);
-       lp->a.write_csr(ioaddr, CSR4, 0x0915);  /* auto tx pad */
+       lp->a->reset(ioaddr);
+       lp->a->write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
 
        /* switch pcnet32 to 32bit mode */
-       lp->a.write_bcr(ioaddr, 20, 2);
+       lp->a->write_bcr(ioaddr, 20, 2);
 
        /* purge & init rings but don't actually restart */
        pcnet32_restart(dev, 0x0000);
 
-       lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);       /* Set STOP bit */
+       lp->a->write_csr(ioaddr, CSR0, CSR0_STOP);      /* Set STOP bit */
 
        /* Initialize Transmit buffers. */
        size = data_len + 15;
@@ -947,10 +947,10 @@ static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)
 
        /* set int loopback in CSR15 */
        x = a->read_csr(ioaddr, CSR15) & 0xfffc;
-       lp->a.write_csr(ioaddr, CSR15, x | 0x0044);
+       lp->a->write_csr(ioaddr, CSR15, x | 0x0044);
 
        teststatus = cpu_to_le16(0x8000);
-       lp->a.write_csr(ioaddr, CSR0, CSR0_START);      /* Set STRT bit */
+       lp->a->write_csr(ioaddr, CSR0, CSR0_START);     /* Set STRT bit */
 
        /* Check status of descriptors */
        for (x = 0; x < numbuffs; x++) {
@@ -969,7 +969,7 @@ static int pcnet32_loopback_test(struct net_device *dev, uint64_t * data1)
                }
        }
 
-       lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);       /* Set STOP bit */
+       lp->a->write_csr(ioaddr, CSR0, CSR0_STOP);      /* Set STOP bit */
        wmb();
        if (netif_msg_hw(lp) && netif_msg_pktdata(lp)) {
                netdev_printk(KERN_DEBUG, dev, "RX loopback packets:\n");
@@ -1015,7 +1015,7 @@ clean_up:
                pcnet32_restart(dev, CSR0_NORMAL);
        } else {
                pcnet32_purge_rx_ring(dev);
-               lp->a.write_bcr(ioaddr, 20, 4); /* return to 16bit mode */
+               lp->a->write_bcr(ioaddr, 20, 4);        /* return to 16bit mode */
        }
        spin_unlock_irqrestore(&lp->lock, flags);
 
@@ -1026,7 +1026,7 @@ static int pcnet32_set_phys_id(struct net_device *dev,
                               enum ethtool_phys_id_state state)
 {
        struct pcnet32_private *lp = netdev_priv(dev);
-       struct pcnet32_access *a = &lp->a;
+       const struct pcnet32_access *a = lp->a;
        ulong ioaddr = dev->base_addr;
        unsigned long flags;
        int i;
@@ -1067,7 +1067,7 @@ static int pcnet32_suspend(struct net_device *dev, unsigned long *flags,
 {
        int csr5;
        struct pcnet32_private *lp = netdev_priv(dev);
-       struct pcnet32_access *a = &lp->a;
+       const struct pcnet32_access *a = lp->a;
        ulong ioaddr = dev->base_addr;
        int ticks;
 
@@ -1324,8 +1324,8 @@ static int pcnet32_poll(struct napi_struct *napi, int budget)
        spin_lock_irqsave(&lp->lock, flags);
        if (pcnet32_tx(dev)) {
                /* reset the chip to clear the error condition, then restart */
-               lp->a.reset(ioaddr);
-               lp->a.write_csr(ioaddr, CSR4, 0x0915);  /* auto tx pad */
+               lp->a->reset(ioaddr);
+               lp->a->write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
                pcnet32_restart(dev, CSR0_START);
                netif_wake_queue(dev);
        }
@@ -1337,12 +1337,12 @@ static int pcnet32_poll(struct napi_struct *napi, int budget)
                __napi_complete(napi);
 
                /* clear interrupt masks */
-               val = lp->a.read_csr(ioaddr, CSR3);
+               val = lp->a->read_csr(ioaddr, CSR3);
                val &= 0x00ff;
-               lp->a.write_csr(ioaddr, CSR3, val);
+               lp->a->write_csr(ioaddr, CSR3, val);
 
                /* Set interrupt enable. */
-               lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN);
+               lp->a->write_csr(ioaddr, CSR0, CSR0_INTEN);
 
                spin_unlock_irqrestore(&lp->lock, flags);
        }
@@ -1365,7 +1365,7 @@ static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
        int i, csr0;
        u16 *buff = ptr;
        struct pcnet32_private *lp = netdev_priv(dev);
-       struct pcnet32_access *a = &lp->a;
+       const struct pcnet32_access *a = lp->a;
        ulong ioaddr = dev->base_addr;
        unsigned long flags;
 
@@ -1401,9 +1401,9 @@ static void pcnet32_get_regs(struct net_device *dev, struct ethtool_regs *regs,
                for (j = 0; j < PCNET32_MAX_PHYS; j++) {
                        if (lp->phymask & (1 << j)) {
                                for (i = 0; i < PCNET32_REGS_PER_PHY; i++) {
-                                       lp->a.write_bcr(ioaddr, 33,
+                                       lp->a->write_bcr(ioaddr, 33,
                                                        (j << 5) | i);
-                                       *buff++ = lp->a.read_bcr(ioaddr, 34);
+                                       *buff++ = lp->a->read_bcr(ioaddr, 34);
                                }
                        }
                }
@@ -1528,7 +1528,7 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
        int chip_version;
        char *chipname;
        struct net_device *dev;
-       struct pcnet32_access *a = NULL;
+       const struct pcnet32_access *a = NULL;
        u8 promaddr[6];
        int ret = -ENODEV;
 
@@ -1785,7 +1785,7 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
            ((cards_found >= MAX_UNITS) || full_duplex[cards_found]))
                lp->options |= PCNET32_PORT_FD;
 
-       lp->a = *a;
+       lp->a = a;
 
        /* prior to register_netdev, dev->name is not yet correct */
        if (pcnet32_alloc_ring(dev, pci_name(lp->pci_dev))) {
@@ -1844,7 +1844,7 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
        if (lp->mii) {
                /* lp->phycount and lp->phymask are set to 0 by memset above */
 
-               lp->mii_if.phy_id = ((lp->a.read_bcr(ioaddr, 33)) >> 5) & 0x1f;
+               lp->mii_if.phy_id = ((lp->a->read_bcr(ioaddr, 33)) >> 5) & 0x1f;
                /* scan for PHYs */
                for (i = 0; i < PCNET32_MAX_PHYS; i++) {
                        unsigned short id1, id2;
@@ -1864,7 +1864,7 @@ pcnet32_probe1(unsigned long ioaddr, int shared, struct pci_dev *pdev)
                                pr_info("Found PHY %04x:%04x at address %d\n",
                                        id1, id2, i);
                }
-               lp->a.write_bcr(ioaddr, 33, (lp->mii_if.phy_id) << 5);
+               lp->a->write_bcr(ioaddr, 33, (lp->mii_if.phy_id) << 5);
                if (lp->phycount > 1)
                        lp->options |= PCNET32_PORT_MII;
        }
@@ -2020,10 +2020,10 @@ static int pcnet32_open(struct net_device *dev)
        }
 
        /* Reset the PCNET32 */
-       lp->a.reset(ioaddr);
+       lp->a->reset(ioaddr);
 
        /* switch pcnet32 to 32bit mode */
-       lp->a.write_bcr(ioaddr, 20, 2);
+       lp->a->write_bcr(ioaddr, 20, 2);
 
        netif_printk(lp, ifup, KERN_DEBUG, dev,
                     "%s() irq %d tx/rx rings %#x/%#x init %#x\n",
@@ -2032,14 +2032,14 @@ static int pcnet32_open(struct net_device *dev)
                     (u32) (lp->init_dma_addr));
 
        /* set/reset autoselect bit */
-       val = lp->a.read_bcr(ioaddr, 2) & ~2;
+       val = lp->a->read_bcr(ioaddr, 2) & ~2;
        if (lp->options & PCNET32_PORT_ASEL)
                val |= 2;
-       lp->a.write_bcr(ioaddr, 2, val);
+       lp->a->write_bcr(ioaddr, 2, val);
 
        /* handle full duplex setting */
        if (lp->mii_if.full_duplex) {
-               val = lp->a.read_bcr(ioaddr, 9) & ~3;
+               val = lp->a->read_bcr(ioaddr, 9) & ~3;
                if (lp->options & PCNET32_PORT_FD) {
                        val |= 1;
                        if (lp->options == (PCNET32_PORT_FD | PCNET32_PORT_AUI))
@@ -2049,14 +2049,14 @@ static int pcnet32_open(struct net_device *dev)
                        if (lp->chip_version == 0x2627)
                                val |= 3;
                }
-               lp->a.write_bcr(ioaddr, 9, val);
+               lp->a->write_bcr(ioaddr, 9, val);
        }
 
        /* set/reset GPSI bit in test register */
-       val = lp->a.read_csr(ioaddr, 124) & ~0x10;
+       val = lp->a->read_csr(ioaddr, 124) & ~0x10;
        if ((lp->options & PCNET32_PORT_PORTSEL) == PCNET32_PORT_GPSI)
                val |= 0x10;
-       lp->a.write_csr(ioaddr, 124, val);
+       lp->a->write_csr(ioaddr, 124, val);
 
        /* Allied Telesyn AT 2700/2701 FX are 100Mbit only and do not negotiate */
        if (pdev && pdev->subsystem_vendor == PCI_VENDOR_ID_AT &&
@@ -2075,24 +2075,24 @@ static int pcnet32_open(struct net_device *dev)
                 * duplex, and/or enable auto negotiation, and clear DANAS
                 */
                if (lp->mii && !(lp->options & PCNET32_PORT_ASEL)) {
-                       lp->a.write_bcr(ioaddr, 32,
-                                       lp->a.read_bcr(ioaddr, 32) | 0x0080);
+                       lp->a->write_bcr(ioaddr, 32,
+                                       lp->a->read_bcr(ioaddr, 32) | 0x0080);
                        /* disable Auto Negotiation, set 10Mpbs, HD */
-                       val = lp->a.read_bcr(ioaddr, 32) & ~0xb8;
+                       val = lp->a->read_bcr(ioaddr, 32) & ~0xb8;
                        if (lp->options & PCNET32_PORT_FD)
                                val |= 0x10;
                        if (lp->options & PCNET32_PORT_100)
                                val |= 0x08;
-                       lp->a.write_bcr(ioaddr, 32, val);
+                       lp->a->write_bcr(ioaddr, 32, val);
                } else {
                        if (lp->options & PCNET32_PORT_ASEL) {
-                               lp->a.write_bcr(ioaddr, 32,
-                                               lp->a.read_bcr(ioaddr,
+                               lp->a->write_bcr(ioaddr, 32,
+                                               lp->a->read_bcr(ioaddr,
                                                               32) | 0x0080);
                                /* enable auto negotiate, setup, disable fd */
-                               val = lp->a.read_bcr(ioaddr, 32) & ~0x98;
+                               val = lp->a->read_bcr(ioaddr, 32) & ~0x98;
                                val |= 0x20;
-                               lp->a.write_bcr(ioaddr, 32, val);
+                               lp->a->write_bcr(ioaddr, 32, val);
                        }
                }
        } else {
@@ -2105,10 +2105,10 @@ static int pcnet32_open(struct net_device *dev)
                 * There is really no good other way to handle multiple PHYs
                 * other than turning off all automatics
                 */
-               val = lp->a.read_bcr(ioaddr, 2);
-               lp->a.write_bcr(ioaddr, 2, val & ~2);
-               val = lp->a.read_bcr(ioaddr, 32);
-               lp->a.write_bcr(ioaddr, 32, val & ~(1 << 7));   /* stop MII manager */
+               val = lp->a->read_bcr(ioaddr, 2);
+               lp->a->write_bcr(ioaddr, 2, val & ~2);
+               val = lp->a->read_bcr(ioaddr, 32);
+               lp->a->write_bcr(ioaddr, 32, val & ~(1 << 7));  /* stop MII manager */
 
                if (!(lp->options & PCNET32_PORT_ASEL)) {
                        /* setup ecmd */
@@ -2118,7 +2118,7 @@ static int pcnet32_open(struct net_device *dev)
                        ethtool_cmd_speed_set(&ecmd,
                                              (lp->options & PCNET32_PORT_100) ?
                                              SPEED_100 : SPEED_10);
-                       bcr9 = lp->a.read_bcr(ioaddr, 9);
+                       bcr9 = lp->a->read_bcr(ioaddr, 9);
 
                        if (lp->options & PCNET32_PORT_FD) {
                                ecmd.duplex = DUPLEX_FULL;
@@ -2127,7 +2127,7 @@ static int pcnet32_open(struct net_device *dev)
                                ecmd.duplex = DUPLEX_HALF;
                                bcr9 |= ~(1 << 0);
                        }
-                       lp->a.write_bcr(ioaddr, 9, bcr9);
+                       lp->a->write_bcr(ioaddr, 9, bcr9);
                }
 
                for (i = 0; i < PCNET32_MAX_PHYS; i++) {
@@ -2158,9 +2158,9 @@ static int pcnet32_open(struct net_device *dev)
 
 #ifdef DO_DXSUFLO
        if (lp->dxsuflo) {      /* Disable transmit stop on underflow */
-               val = lp->a.read_csr(ioaddr, CSR3);
+               val = lp->a->read_csr(ioaddr, CSR3);
                val |= 0x40;
-               lp->a.write_csr(ioaddr, CSR3, val);
+               lp->a->write_csr(ioaddr, CSR3, val);
        }
 #endif
 
@@ -2176,11 +2176,11 @@ static int pcnet32_open(struct net_device *dev)
        napi_enable(&lp->napi);
 
        /* Re-initialize the PCNET32, and start it when done. */
-       lp->a.write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
-       lp->a.write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
+       lp->a->write_csr(ioaddr, 1, (lp->init_dma_addr & 0xffff));
+       lp->a->write_csr(ioaddr, 2, (lp->init_dma_addr >> 16));
 
-       lp->a.write_csr(ioaddr, CSR4, 0x0915);  /* auto tx pad */
-       lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
+       lp->a->write_csr(ioaddr, CSR4, 0x0915); /* auto tx pad */
+       lp->a->write_csr(ioaddr, CSR0, CSR0_INIT);
 
        netif_start_queue(dev);
 
@@ -2192,19 +2192,19 @@ static int pcnet32_open(struct net_device *dev)
 
        i = 0;
        while (i++ < 100)
-               if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
+               if (lp->a->read_csr(ioaddr, CSR0) & CSR0_IDON)
                        break;
        /*
         * We used to clear the InitDone bit, 0x0100, here but Mark Stockton
         * reports that doing so triggers a bug in the '974.
         */
-       lp->a.write_csr(ioaddr, CSR0, CSR0_NORMAL);
+       lp->a->write_csr(ioaddr, CSR0, CSR0_NORMAL);
 
        netif_printk(lp, ifup, KERN_DEBUG, dev,
                     "pcnet32 open after %d ticks, init block %#x csr0 %4.4x\n",
                     i,
                     (u32) (lp->init_dma_addr),
-                    lp->a.read_csr(ioaddr, CSR0));
+                    lp->a->read_csr(ioaddr, CSR0));
 
        spin_unlock_irqrestore(&lp->lock, flags);
 
@@ -2218,7 +2218,7 @@ err_free_ring:
         * Switch back to 16bit mode to avoid problems with dumb
         * DOS packet driver after a warm reboot
         */
-       lp->a.write_bcr(ioaddr, 20, 4);
+       lp->a->write_bcr(ioaddr, 20, 4);
 
 err_free_irq:
        spin_unlock_irqrestore(&lp->lock, flags);
@@ -2323,7 +2323,7 @@ static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)
 
        /* wait for stop */
        for (i = 0; i < 100; i++)
-               if (lp->a.read_csr(ioaddr, CSR0) & CSR0_STOP)
+               if (lp->a->read_csr(ioaddr, CSR0) & CSR0_STOP)
                        break;
 
        if (i >= 100)
@@ -2335,13 +2335,13 @@ static void pcnet32_restart(struct net_device *dev, unsigned int csr0_bits)
                return;
 
        /* ReInit Ring */
-       lp->a.write_csr(ioaddr, CSR0, CSR0_INIT);
+       lp->a->write_csr(ioaddr, CSR0, CSR0_INIT);
        i = 0;
        while (i++ < 1000)
-               if (lp->a.read_csr(ioaddr, CSR0) & CSR0_IDON)
+               if (lp->a->read_csr(ioaddr, CSR0) & CSR0_IDON)
                        break;
 
-       lp->a.write_csr(ioaddr, CSR0, csr0_bits);
+       lp->a->write_csr(ioaddr, CSR0, csr0_bits);
 }
 
 static void pcnet32_tx_timeout(struct net_device *dev)
@@ -2353,8 +2353,8 @@ static void pcnet32_tx_timeout(struct net_device *dev)
        /* Transmitter timeout, serious problems. */
        if (pcnet32_debug & NETIF_MSG_DRV)
                pr_err("%s: transmit timed out, status %4.4x, resetting\n",
-                      dev->name, lp->a.read_csr(ioaddr, CSR0));
-       lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
+                      dev->name, lp->a->read_csr(ioaddr, CSR0));
+       lp->a->write_csr(ioaddr, CSR0, CSR0_STOP);
        dev->stats.tx_errors++;
        if (netif_msg_tx_err(lp)) {
                int i;
@@ -2397,7 +2397,7 @@ static netdev_tx_t pcnet32_start_xmit(struct sk_buff *skb,
 
        netif_printk(lp, tx_queued, KERN_DEBUG, dev,
                     "%s() called, csr0 %4.4x\n",
-                    __func__, lp->a.read_csr(ioaddr, CSR0));
+                    __func__, lp->a->read_csr(ioaddr, CSR0));
 
        /* Default status -- will not enable Successful-TxDone
         * interrupt when that option is available to us.
@@ -2427,7 +2427,7 @@ static netdev_tx_t pcnet32_start_xmit(struct sk_buff *skb,
        dev->stats.tx_bytes += skb->len;
 
        /* Trigger an immediate send poll. */
-       lp->a.write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL);
+       lp->a->write_csr(ioaddr, CSR0, CSR0_INTEN | CSR0_TXPOLL);
 
        if (lp->tx_ring[(entry + 1) & lp->tx_mod_mask].base != 0) {
                lp->tx_full = 1;
@@ -2452,16 +2452,16 @@ pcnet32_interrupt(int irq, void *dev_id)
 
        spin_lock(&lp->lock);
 
-       csr0 = lp->a.read_csr(ioaddr, CSR0);
+       csr0 = lp->a->read_csr(ioaddr, CSR0);
        while ((csr0 & 0x8f00) && --boguscnt >= 0) {
                if (csr0 == 0xffff)
                        break;  /* PCMCIA remove happened */
                /* Acknowledge all of the current interrupt sources ASAP. */
-               lp->a.write_csr(ioaddr, CSR0, csr0 & ~0x004f);
+               lp->a->write_csr(ioaddr, CSR0, csr0 & ~0x004f);
 
                netif_printk(lp, intr, KERN_DEBUG, dev,
                             "interrupt  csr0=%#2.2x new csr=%#2.2x\n",
-                            csr0, lp->a.read_csr(ioaddr, CSR0));
+                            csr0, lp->a->read_csr(ioaddr, CSR0));
 
                /* Log misc errors. */
                if (csr0 & 0x4000)
@@ -2488,19 +2488,19 @@ pcnet32_interrupt(int irq, void *dev_id)
                if (napi_schedule_prep(&lp->napi)) {
                        u16 val;
                        /* set interrupt masks */
-                       val = lp->a.read_csr(ioaddr, CSR3);
+                       val = lp->a->read_csr(ioaddr, CSR3);
                        val |= 0x5f00;
-                       lp->a.write_csr(ioaddr, CSR3, val);
+                       lp->a->write_csr(ioaddr, CSR3, val);
 
                        __napi_schedule(&lp->napi);
                        break;
                }
-               csr0 = lp->a.read_csr(ioaddr, CSR0);
+               csr0 = lp->a->read_csr(ioaddr, CSR0);
        }
 
        netif_printk(lp, intr, KERN_DEBUG, dev,
                     "exiting interrupt, csr0=%#4.4x\n",
-                    lp->a.read_csr(ioaddr, CSR0));
+                    lp->a->read_csr(ioaddr, CSR0));
 
        spin_unlock(&lp->lock);
 
@@ -2520,20 +2520,20 @@ static int pcnet32_close(struct net_device *dev)
 
        spin_lock_irqsave(&lp->lock, flags);
 
-       dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
+       dev->stats.rx_missed_errors = lp->a->read_csr(ioaddr, 112);
 
        netif_printk(lp, ifdown, KERN_DEBUG, dev,
                     "Shutting down ethercard, status was %2.2x\n",
-                    lp->a.read_csr(ioaddr, CSR0));
+                    lp->a->read_csr(ioaddr, CSR0));
 
        /* We stop the PCNET32 here -- it occasionally polls memory if we don't. */
-       lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
+       lp->a->write_csr(ioaddr, CSR0, CSR0_STOP);
 
        /*
         * Switch back to 16bit mode to avoid problems with dumb
         * DOS packet driver after a warm reboot
         */
-       lp->a.write_bcr(ioaddr, 20, 4);
+       lp->a->write_bcr(ioaddr, 20, 4);
 
        spin_unlock_irqrestore(&lp->lock, flags);
 
@@ -2556,7 +2556,7 @@ static struct net_device_stats *pcnet32_get_stats(struct net_device *dev)
        unsigned long flags;
 
        spin_lock_irqsave(&lp->lock, flags);
-       dev->stats.rx_missed_errors = lp->a.read_csr(ioaddr, 112);
+       dev->stats.rx_missed_errors = lp->a->read_csr(ioaddr, 112);
        spin_unlock_irqrestore(&lp->lock, flags);
 
        return &dev->stats;
@@ -2577,10 +2577,10 @@ static void pcnet32_load_multicast(struct net_device *dev)
        if (dev->flags & IFF_ALLMULTI) {
                ib->filter[0] = cpu_to_le32(~0U);
                ib->filter[1] = cpu_to_le32(~0U);
-               lp->a.write_csr(ioaddr, PCNET32_MC_FILTER, 0xffff);
-               lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+1, 0xffff);
-               lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+2, 0xffff);
-               lp->a.write_csr(ioaddr, PCNET32_MC_FILTER+3, 0xffff);
+               lp->a->write_csr(ioaddr, PCNET32_MC_FILTER, 0xffff);
+               lp->a->write_csr(ioaddr, PCNET32_MC_FILTER+1, 0xffff);
+               lp->a->write_csr(ioaddr, PCNET32_MC_FILTER+2, 0xffff);
+               lp->a->write_csr(ioaddr, PCNET32_MC_FILTER+3, 0xffff);
                return;
        }
        /* clear the multicast filter */
@@ -2594,7 +2594,7 @@ static void pcnet32_load_multicast(struct net_device *dev)
                mcast_table[crc >> 4] |= cpu_to_le16(1 << (crc & 0xf));
        }
        for (i = 0; i < 4; i++)
-               lp->a.write_csr(ioaddr, PCNET32_MC_FILTER + i,
+               lp->a->write_csr(ioaddr, PCNET32_MC_FILTER + i,
                                le16_to_cpu(mcast_table[i]));
 }
 
@@ -2609,28 +2609,28 @@ static void pcnet32_set_multicast_list(struct net_device *dev)
 
        spin_lock_irqsave(&lp->lock, flags);
        suspended = pcnet32_suspend(dev, &flags, 0);
-       csr15 = lp->a.read_csr(ioaddr, CSR15);
+       csr15 = lp->a->read_csr(ioaddr, CSR15);
        if (dev->flags & IFF_PROMISC) {
                /* Log any net taps. */
                netif_info(lp, hw, dev, "Promiscuous mode enabled\n");
                lp->init_block->mode =
                    cpu_to_le16(0x8000 | (lp->options & PCNET32_PORT_PORTSEL) <<
                                7);
-               lp->a.write_csr(ioaddr, CSR15, csr15 | 0x8000);
+               lp->a->write_csr(ioaddr, CSR15, csr15 | 0x8000);
        } else {
                lp->init_block->mode =
                    cpu_to_le16((lp->options & PCNET32_PORT_PORTSEL) << 7);
-               lp->a.write_csr(ioaddr, CSR15, csr15 & 0x7fff);
+               lp->a->write_csr(ioaddr, CSR15, csr15 & 0x7fff);
                pcnet32_load_multicast(dev);
        }
 
        if (suspended) {
                int csr5;
                /* clear SUSPEND (SPND) - CSR5 bit 0 */
-               csr5 = lp->a.read_csr(ioaddr, CSR5);
-               lp->a.write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
+               csr5 = lp->a->read_csr(ioaddr, CSR5);
+               lp->a->write_csr(ioaddr, CSR5, csr5 & (~CSR5_SUSPEND));
        } else {
-               lp->a.write_csr(ioaddr, CSR0, CSR0_STOP);
+               lp->a->write_csr(ioaddr, CSR0, CSR0_STOP);
                pcnet32_restart(dev, CSR0_NORMAL);
                netif_wake_queue(dev);
        }
@@ -2648,8 +2648,8 @@ static int mdio_read(struct net_device *dev, int phy_id, int reg_num)
        if (!lp->mii)
                return 0;
 
-       lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
-       val_out = lp->a.read_bcr(ioaddr, 34);
+       lp->a->write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
+       val_out = lp->a->read_bcr(ioaddr, 34);
 
        return val_out;
 }
@@ -2663,8 +2663,8 @@ static void mdio_write(struct net_device *dev, int phy_id, int reg_num, int val)
        if (!lp->mii)
                return;
 
-       lp->a.write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
-       lp->a.write_bcr(ioaddr, 34, val);
+       lp->a->write_bcr(ioaddr, 33, ((phy_id & 0x1f) << 5) | (reg_num & 0x1f));
+       lp->a->write_bcr(ioaddr, 34, val);
 }
 
 static int pcnet32_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
@@ -2741,7 +2741,7 @@ static void pcnet32_check_media(struct net_device *dev, int verbose)
                curr_link = mii_link_ok(&lp->mii_if);
        } else {
                ulong ioaddr = dev->base_addr;  /* card base I/O address */
-               curr_link = (lp->a.read_bcr(ioaddr, 4) != 0xc0);
+               curr_link = (lp->a->read_bcr(ioaddr, 4) != 0xc0);
        }
        if (!curr_link) {
                if (prev_link || verbose) {
@@ -2764,13 +2764,13 @@ static void pcnet32_check_media(struct net_device *dev, int verbose)
                                            (ecmd.duplex == DUPLEX_FULL)
                                            ? "full" : "half");
                        }
-                       bcr9 = lp->a.read_bcr(dev->base_addr, 9);
+                       bcr9 = lp->a->read_bcr(dev->base_addr, 9);
                        if ((bcr9 & (1 << 0)) != lp->mii_if.full_duplex) {
                                if (lp->mii_if.full_duplex)
                                        bcr9 |= (1 << 0);
                                else
                                        bcr9 &= ~(1 << 0);
-                               lp->a.write_bcr(dev->base_addr, 9, bcr9);
+                               lp->a->write_bcr(dev->base_addr, 9, bcr9);
                        }
                } else {
                        netif_info(lp, link, dev, "link up\n");