[PATCH net 11/18] drivers: net: cirrus: cs89x0: Remove this driver

[Andrew Lunn]

The cs89x0 was written by Bonald Becker 1993 to 1994. It is an ISA
device, so unlikely to be used with modern kernels.

Signed-off-by: Andrew Lunn <andrew@xxxxxxx>
---
 drivers/net/ethernet/cirrus/Kconfig  |   30 -
 drivers/net/ethernet/cirrus/Makefile |    1 -
 drivers/net/ethernet/cirrus/cs89x0.c | 1915 ----------------------------------
 3 files changed, 1946 deletions(-)

diff --git a/drivers/net/ethernet/cirrus/Kconfig b/drivers/net/ethernet/cirrus/Kconfig
index 5bdf731d9503..1a0c7b3bfcd6 100644
--- a/drivers/net/ethernet/cirrus/Kconfig
+++ b/drivers/net/ethernet/cirrus/Kconfig
@@ -17,36 +17,6 @@ config NET_VENDOR_CIRRUS
 
 if NET_VENDOR_CIRRUS
 
-config CS89x0
-	tristate
-
-config CS89x0_ISA
-	tristate "CS89x0 ISA driver support"
-	depends on HAS_IOPORT_MAP
-	depends on ISA
-	depends on !PPC32
-	depends on CS89x0_PLATFORM=n
-	select NETDEV_LEGACY_INIT
-	select CS89x0
-	help
-	  Support for CS89x0 chipset based Ethernet cards. If you have a
-	  network (Ethernet) card of this type, say Y and read the file
-	  <file:Documentation/networking/device_drivers/ethernet/cirrus/cs89x0.rst>.
-
-	  To compile this driver as a module, choose M here. The module
-	  will be called cs89x0.
-
-config CS89x0_PLATFORM
-	tristate "CS89x0 platform driver support"
-	depends on ARM || (COMPILE_TEST && !PPC)
-	select CS89x0
-	help
-	  Say Y to compile the cs89x0 platform driver. This makes this driver
-	  suitable for use on certain evaluation boards such as the iMX21ADS.
-
-	  To compile this driver as a module, choose M here. The module
-	  will be called cs89x0.
-
 config EP93XX_ETH
 	tristate "EP93xx Ethernet support"
 	depends on (ARM && ARCH_EP93XX) || COMPILE_TEST
diff --git a/drivers/net/ethernet/cirrus/Makefile b/drivers/net/ethernet/cirrus/Makefile
index 84865e593788..cb740939d976 100644
--- a/drivers/net/ethernet/cirrus/Makefile
+++ b/drivers/net/ethernet/cirrus/Makefile
@@ -3,6 +3,5 @@
 # Makefile for the Cirrus network device drivers.
 #
 
-obj-$(CONFIG_CS89x0) += cs89x0.o
 obj-$(CONFIG_EP93XX_ETH) += ep93xx_eth.o
 obj-$(CONFIG_MAC89x0) += mac89x0.o
diff --git a/drivers/net/ethernet/cirrus/cs89x0.c b/drivers/net/ethernet/cirrus/cs89x0.c
deleted file mode 100644
index fa5857923db4..000000000000
--- a/drivers/net/ethernet/cirrus/cs89x0.c
+++ /dev/null
@@ -1,1915 +0,0 @@
-/* cs89x0.c: A Crystal Semiconductor (Now Cirrus Logic) CS89[02]0
- *           driver for linux.
- * Written 1996 by Russell Nelson, with reference to skeleton.c
- * written 1993-1994 by Donald Becker.
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- *
- * The author may be reached at nelson@xxxxxxxxxx, Crynwr
- * Software, 521 Pleasant Valley Rd., Potsdam, NY 13676
- *
- * Other contributors:
- * Mike Cruse        : mcruse@xxxxxxxxxxx
- * Russ Nelson
- * Melody Lee        : ethernet@xxxxxxxxxxxxxxxxxx
- * Alan Cox
- * Andrew Morton
- * Oskar Schirmer    : oskar@xxxxxxxxx
- * Deepak Saxena     : dsaxena@xxxxxxxxxxx
- * Dmitry Pervushin  : dpervushin@xxxxxxxxxxxxx
- * Deepak Saxena     : dsaxena@xxxxxxxxxxx
- * Domenico Andreoli : cavokz@xxxxxxxxx
- */
-
-
-/*
- * Set this to zero to disable DMA code
- *
- * Note that even if DMA is turned off we still support the 'dma' and  'use_dma'
- * module options so we don't break any startup scripts.
- */
-#ifndef CONFIG_ISA_DMA_API
-#define ALLOW_DMA	0
-#else
-#define ALLOW_DMA	1
-#endif
-
-/*
- * Set this to zero to remove all the debug statements via
- * dead code elimination
- */
-#define DEBUGGING	1
-
-/* Sources:
- *	Crynwr packet driver epktisa.
- *	Crystal Semiconductor data sheets.
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/printk.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/of.h>
-#include <linux/platform_device.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/jiffies.h>
-#include <linux/skbuff.h>
-#include <linux/spinlock.h>
-#include <linux/string.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-#include <linux/delay.h>
-#include <linux/gfp.h>
-#include <linux/io.h>
-
-#include <net/Space.h>
-
-#include <asm/irq.h>
-#include <linux/atomic.h>
-#if ALLOW_DMA
-#include <asm/dma.h>
-#endif
-
-#include "cs89x0.h"
-
-#define cs89_dbg(val, level, fmt, ...)				\
-do {								\
-	if (val <= net_debug)					\
-		pr_##level(fmt, ##__VA_ARGS__);			\
-} while (0)
-
-static char version[] __initdata =
-	"v2.4.3-pre1 Russell Nelson <nelson@xxxxxxxxxx>, Andrew Morton";
-
-#define DRV_NAME "cs89x0"
-
-/* First, a few definitions that the brave might change.
- * A zero-terminated list of I/O addresses to be probed. Some special flags..
- * Addr & 1 = Read back the address port, look for signature and reset
- * the page window before probing
- * Addr & 3 = Reset the page window and probe
- * The CLPS eval board has the Cirrus chip at 0x80090300, in ARM IO space,
- * but it is possible that a Cirrus board could be plugged into the ISA
- * slots.
- */
-/* The cs8900 has 4 IRQ pins, software selectable. cs8900_irq_map maps
- * them to system IRQ numbers. This mapping is card specific and is set to
- * the configuration of the Cirrus Eval board for this chip.
- */
-#if IS_ENABLED(CONFIG_CS89x0_ISA)
-static unsigned int netcard_portlist[] __used __initdata = {
-	0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240,
-	0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0
-};
-static unsigned int cs8900_irq_map[] = {
-	10, 11, 12, 5
-};
-#endif
-
-#if DEBUGGING
-static unsigned int net_debug = DEBUGGING;
-#else
-#define net_debug 0	/* gcc will remove all the debug code for us */
-#endif
-
-/* The number of low I/O ports used by the ethercard. */
-#define NETCARD_IO_EXTENT	16
-
-/* we allow the user to override various values normally set in the EEPROM */
-#define FORCE_RJ45	0x0001    /* pick one of these three */
-#define FORCE_AUI	0x0002
-#define FORCE_BNC	0x0004
-
-#define FORCE_AUTO	0x0010    /* pick one of these three */
-#define FORCE_HALF	0x0020
-#define FORCE_FULL	0x0030
-
-/* Information that need to be kept for each board. */
-struct net_local {
-	int chip_type;		/* one of: CS8900, CS8920, CS8920M */
-	char chip_revision;	/* revision letter of the chip ('A'...) */
-	int send_cmd;		/* the proper send command: TX_NOW, TX_AFTER_381, or TX_AFTER_ALL */
-	int auto_neg_cnf;	/* auto-negotiation word from EEPROM */
-	int adapter_cnf;	/* adapter configuration from EEPROM */
-	int isa_config;		/* ISA configuration from EEPROM */
-	int irq_map;		/* IRQ map from EEPROM */
-	int rx_mode;		/* what mode are we in? 0, RX_MULTCAST_ACCEPT, or RX_ALL_ACCEPT */
-	int curr_rx_cfg;	/* a copy of PP_RxCFG */
-	int linectl;		/* either 0 or LOW_RX_SQUELCH, depending on configuration. */
-	int send_underrun;	/* keep track of how many underruns in a row we get */
-	int force;		/* force various values; see FORCE* above. */
-	spinlock_t lock;
-	void __iomem *virt_addr;/* CS89x0 virtual address. */
-#if ALLOW_DMA
-	int use_dma;		/* Flag: we're using dma */
-	int dma;		/* DMA channel */
-	int dmasize;		/* 16 or 64 */
-	unsigned char *dma_buff;	/* points to the beginning of the buffer */
-	unsigned char *end_dma_buff;	/* points to the end of the buffer */
-	unsigned char *rx_dma_ptr;	/* points to the next packet  */
-#endif
-};
-
-/* Example routines you must write ;->. */
-#define tx_done(dev) 1
-
-/*
- * Permit 'cs89x0_dma=N' in the kernel boot environment
- */
-#if !defined(MODULE)
-#if ALLOW_DMA
-static int g_cs89x0_dma;
-
-static int __init dma_fn(char *str)
-{
-	g_cs89x0_dma = simple_strtol(str, NULL, 0);
-	return 1;
-}
-
-__setup("cs89x0_dma=", dma_fn);
-#endif	/* ALLOW_DMA */
-
-static int g_cs89x0_media__force;
-
-static int __init media_fn(char *str)
-{
-	if (!strcmp(str, "rj45"))
-		g_cs89x0_media__force = FORCE_RJ45;
-	else if (!strcmp(str, "aui"))
-		g_cs89x0_media__force = FORCE_AUI;
-	else if (!strcmp(str, "bnc"))
-		g_cs89x0_media__force = FORCE_BNC;
-
-	return 1;
-}
-
-__setup("cs89x0_media=", media_fn);
-#endif
-
-static void readwords(struct net_local *lp, int portno, void *buf, int length)
-{
-	u8 *buf8 = (u8 *)buf;
-
-	do {
-		u16 tmp16;
-
-		tmp16 = ioread16(lp->virt_addr + portno);
-		*buf8++ = (u8)tmp16;
-		*buf8++ = (u8)(tmp16 >> 8);
-	} while (--length);
-}
-
-static void writewords(struct net_local *lp, int portno, void *buf, int length)
-{
-	u8 *buf8 = (u8 *)buf;
-
-	do {
-		u16 tmp16;
-
-		tmp16 = *buf8++;
-		tmp16 |= (*buf8++) << 8;
-		iowrite16(tmp16, lp->virt_addr + portno);
-	} while (--length);
-}
-
-static u16
-readreg(struct net_device *dev, u16 regno)
-{
-	struct net_local *lp = netdev_priv(dev);
-
-	iowrite16(regno, lp->virt_addr + ADD_PORT);
-	return ioread16(lp->virt_addr + DATA_PORT);
-}
-
-static void
-writereg(struct net_device *dev, u16 regno, u16 value)
-{
-	struct net_local *lp = netdev_priv(dev);
-
-	iowrite16(regno, lp->virt_addr + ADD_PORT);
-	iowrite16(value, lp->virt_addr + DATA_PORT);
-}
-
-static int __init
-wait_eeprom_ready(struct net_device *dev)
-{
-	unsigned long timeout = jiffies;
-	/* check to see if the EEPROM is ready,
-	 * a timeout is used just in case EEPROM is ready when
-	 * SI_BUSY in the PP_SelfST is clear
-	 */
-	while (readreg(dev, PP_SelfST) & SI_BUSY)
-		if (time_after_eq(jiffies, timeout + 40))
-			return -1;
-	return 0;
-}
-
-static int __init
-get_eeprom_data(struct net_device *dev, int off, int len, int *buffer)
-{
-	int i;
-
-	cs89_dbg(3, info, "EEPROM data from %x for %x:", off, len);
-	for (i = 0; i < len; i++) {
-		if (wait_eeprom_ready(dev) < 0)
-			return -1;
-		/* Now send the EEPROM read command and EEPROM location to read */
-		writereg(dev, PP_EECMD, (off + i) | EEPROM_READ_CMD);
-		if (wait_eeprom_ready(dev) < 0)
-			return -1;
-		buffer[i] = readreg(dev, PP_EEData);
-		cs89_dbg(3, cont, " %04x", buffer[i]);
-	}
-	cs89_dbg(3, cont, "\n");
-	return 0;
-}
-
-static int  __init
-get_eeprom_cksum(int off, int len, int *buffer)
-{
-	int i, cksum;
-
-	cksum = 0;
-	for (i = 0; i < len; i++)
-		cksum += buffer[i];
-	cksum &= 0xffff;
-	if (cksum == 0)
-		return 0;
-	return -1;
-}
-
-static void
-write_irq(struct net_device *dev, int chip_type, int irq)
-{
-	int i;
-
-	if (chip_type == CS8900) {
-#if IS_ENABLED(CONFIG_CS89x0_ISA)
-		/* Search the mapping table for the corresponding IRQ pin. */
-		for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
-			if (cs8900_irq_map[i] == irq)
-				break;
-		/* Not found */
-		if (i == ARRAY_SIZE(cs8900_irq_map))
-			i = 3;
-#else
-		/* INTRQ0 pin is used for interrupt generation. */
-		i = 0;
-#endif
-		writereg(dev, PP_CS8900_ISAINT, i);
-	} else {
-		writereg(dev, PP_CS8920_ISAINT, irq);
-	}
-}
-
-static void
-count_rx_errors(int status, struct net_device *dev)
-{
-	dev->stats.rx_errors++;
-	if (status & RX_RUNT)
-		dev->stats.rx_length_errors++;
-	if (status & RX_EXTRA_DATA)
-		dev->stats.rx_length_errors++;
-	if ((status & RX_CRC_ERROR) && !(status & (RX_EXTRA_DATA | RX_RUNT)))
-		/* per str 172 */
-		dev->stats.rx_crc_errors++;
-	if (status & RX_DRIBBLE)
-		dev->stats.rx_frame_errors++;
-}
-
-/*********************************
- * This page contains DMA routines
- *********************************/
-
-#if ALLOW_DMA
-
-#define dma_page_eq(ptr1, ptr2) ((long)(ptr1) >> 17 == (long)(ptr2) >> 17)
-
-static void
-get_dma_channel(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-
-	if (lp->dma) {
-		dev->dma = lp->dma;
-		lp->isa_config |= ISA_RxDMA;
-	} else {
-		if ((lp->isa_config & ANY_ISA_DMA) == 0)
-			return;
-		dev->dma = lp->isa_config & DMA_NO_MASK;
-		if (lp->chip_type == CS8900)
-			dev->dma += 5;
-		if (dev->dma < 5 || dev->dma > 7) {
-			lp->isa_config &= ~ANY_ISA_DMA;
-			return;
-		}
-	}
-}
-
-static void
-write_dma(struct net_device *dev, int chip_type, int dma)
-{
-	struct net_local *lp = netdev_priv(dev);
-	if ((lp->isa_config & ANY_ISA_DMA) == 0)
-		return;
-	if (chip_type == CS8900)
-		writereg(dev, PP_CS8900_ISADMA, dma - 5);
-	else
-		writereg(dev, PP_CS8920_ISADMA, dma);
-}
-
-static void
-set_dma_cfg(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-
-	if (lp->use_dma) {
-		if ((lp->isa_config & ANY_ISA_DMA) == 0) {
-			cs89_dbg(3, err, "set_dma_cfg(): no DMA\n");
-			return;
-		}
-		if (lp->isa_config & ISA_RxDMA) {
-			lp->curr_rx_cfg |= RX_DMA_ONLY;
-			cs89_dbg(3, info, "set_dma_cfg(): RX_DMA_ONLY\n");
-		} else {
-			lp->curr_rx_cfg |= AUTO_RX_DMA;	/* not that we support it... */
-			cs89_dbg(3, info, "set_dma_cfg(): AUTO_RX_DMA\n");
-		}
-	}
-}
-
-static int
-dma_bufcfg(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	if (lp->use_dma)
-		return (lp->isa_config & ANY_ISA_DMA) ? RX_DMA_ENBL : 0;
-	else
-		return 0;
-}
-
-static int
-dma_busctl(struct net_device *dev)
-{
-	int retval = 0;
-	struct net_local *lp = netdev_priv(dev);
-	if (lp->use_dma) {
-		if (lp->isa_config & ANY_ISA_DMA)
-			retval |= RESET_RX_DMA; /* Reset the DMA pointer */
-		if (lp->isa_config & DMA_BURST)
-			retval |= DMA_BURST_MODE; /* Does ISA config specify DMA burst ? */
-		if (lp->dmasize == 64)
-			retval |= RX_DMA_SIZE_64K; /* did they ask for 64K? */
-		retval |= MEMORY_ON;	/* we need memory enabled to use DMA. */
-	}
-	return retval;
-}
-
-static void
-dma_rx(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	struct sk_buff *skb;
-	int status, length;
-	unsigned char *bp = lp->rx_dma_ptr;
-
-	status = bp[0] + (bp[1] << 8);
-	length = bp[2] + (bp[3] << 8);
-	bp += 4;
-
-	cs89_dbg(5, debug, "%s: receiving DMA packet at %lx, status %x, length %x\n",
-		 dev->name, (unsigned long)bp, status, length);
-
-	if ((status & RX_OK) == 0) {
-		count_rx_errors(status, dev);
-		goto skip_this_frame;
-	}
-
-	/* Malloc up new buffer. */
-	skb = netdev_alloc_skb(dev, length + 2);
-	if (skb == NULL) {
-		dev->stats.rx_dropped++;
-
-		/* AKPM: advance bp to the next frame */
-skip_this_frame:
-		bp += (length + 3) & ~3;
-		if (bp >= lp->end_dma_buff)
-			bp -= lp->dmasize * 1024;
-		lp->rx_dma_ptr = bp;
-		return;
-	}
-	skb_reserve(skb, 2);	/* longword align L3 header */
-
-	if (bp + length > lp->end_dma_buff) {
-		int semi_cnt = lp->end_dma_buff - bp;
-		skb_put_data(skb, bp, semi_cnt);
-		skb_put_data(skb, lp->dma_buff, length - semi_cnt);
-	} else {
-		skb_put_data(skb, bp, length);
-	}
-	bp += (length + 3) & ~3;
-	if (bp >= lp->end_dma_buff)
-		bp -= lp->dmasize*1024;
-	lp->rx_dma_ptr = bp;
-
-	cs89_dbg(3, info, "%s: received %d byte DMA packet of type %x\n",
-		 dev->name, length,
-		 ((skb->data[ETH_ALEN + ETH_ALEN] << 8) |
-		  skb->data[ETH_ALEN + ETH_ALEN + 1]));
-
-	skb->protocol = eth_type_trans(skb, dev);
-	netif_rx(skb);
-	dev->stats.rx_packets++;
-	dev->stats.rx_bytes += length;
-}
-
-static void release_dma_buff(struct net_local *lp)
-{
-	if (lp->dma_buff) {
-		free_pages((unsigned long)(lp->dma_buff),
-			   get_order(lp->dmasize * 1024));
-		lp->dma_buff = NULL;
-	}
-}
-
-#endif	/* ALLOW_DMA */
-
-static void
-control_dc_dc(struct net_device *dev, int on_not_off)
-{
-	struct net_local *lp = netdev_priv(dev);
-	unsigned int selfcontrol;
-	unsigned long timenow = jiffies;
-	/* control the DC to DC convertor in the SelfControl register.
-	 * Note: This is hooked up to a general purpose pin, might not
-	 * always be a DC to DC convertor.
-	 */
-
-	selfcontrol = HCB1_ENBL; /* Enable the HCB1 bit as an output */
-	if (((lp->adapter_cnf & A_CNF_DC_DC_POLARITY) != 0) ^ on_not_off)
-		selfcontrol |= HCB1;
-	else
-		selfcontrol &= ~HCB1;
-	writereg(dev, PP_SelfCTL, selfcontrol);
-
-	/* Wait for the DC/DC converter to power up - 500ms */
-	while (time_before(jiffies, timenow + HZ))
-		;
-}
-
-/* send a test packet - return true if carrier bits are ok */
-static int
-send_test_pkt(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	char test_packet[] = {
-		0, 0, 0, 0, 0, 0,  0, 0, 0, 0, 0, 0,
-		0, 46,		/* A 46 in network order */
-		0, 0,		/* DSAP=0 & SSAP=0 fields */
-		0xf3, 0		/* Control (Test Req + P bit set) */
-	};
-	unsigned long timenow = jiffies;
-
-	writereg(dev, PP_LineCTL, readreg(dev, PP_LineCTL) | SERIAL_TX_ON);
-
-	memcpy(test_packet,            dev->dev_addr, ETH_ALEN);
-	memcpy(test_packet + ETH_ALEN, dev->dev_addr, ETH_ALEN);
-
-	iowrite16(TX_AFTER_ALL, lp->virt_addr + TX_CMD_PORT);
-	iowrite16(ETH_ZLEN, lp->virt_addr + TX_LEN_PORT);
-
-	/* Test to see if the chip has allocated memory for the packet */
-	while (time_before(jiffies, timenow + 5))
-		if (readreg(dev, PP_BusST) & READY_FOR_TX_NOW)
-			break;
-	if (time_after_eq(jiffies, timenow + 5))
-		return 0;	/* this shouldn't happen */
-
-	/* Write the contents of the packet */
-	writewords(lp, TX_FRAME_PORT, test_packet, (ETH_ZLEN + 1) >> 1);
-
-	cs89_dbg(1, debug, "Sending test packet ");
-	/* wait a couple of jiffies for packet to be received */
-	for (timenow = jiffies; time_before(jiffies, timenow + 3);)
-		;
-	if ((readreg(dev, PP_TxEvent) & TX_SEND_OK_BITS) == TX_OK) {
-		cs89_dbg(1, cont, "succeeded\n");
-		return 1;
-	}
-	cs89_dbg(1, cont, "failed\n");
-	return 0;
-}
-
-#define DETECTED_NONE  0
-#define DETECTED_RJ45H 1
-#define DETECTED_RJ45F 2
-#define DETECTED_AUI   3
-#define DETECTED_BNC   4
-
-static int
-detect_tp(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	unsigned long timenow = jiffies;
-	int fdx;
-
-	cs89_dbg(1, debug, "%s: Attempting TP\n", dev->name);
-
-	/* If connected to another full duplex capable 10-Base-T card
-	 * the link pulses seem to be lost when the auto detect bit in
-	 * the LineCTL is set.  To overcome this the auto detect bit will
-	 * be cleared whilst testing the 10-Base-T interface.  This would
-	 * not be necessary for the sparrow chip but is simpler to do it
-	 * anyway.
-	 */
-	writereg(dev, PP_LineCTL, lp->linectl & ~AUI_ONLY);
-	control_dc_dc(dev, 0);
-
-	/* Delay for the hardware to work out if the TP cable is present
-	 * - 150ms
-	 */
-	for (timenow = jiffies; time_before(jiffies, timenow + 15);)
-		;
-	if ((readreg(dev, PP_LineST) & LINK_OK) == 0)
-		return DETECTED_NONE;
-
-	if (lp->chip_type == CS8900) {
-		switch (lp->force & 0xf0) {
-#if 0
-		case FORCE_AUTO:
-			pr_info("%s: cs8900 doesn't autonegotiate\n",
-				dev->name);
-			return DETECTED_NONE;
-#endif
-			/* CS8900 doesn't support AUTO, change to HALF*/
-		case FORCE_AUTO:
-			lp->force &= ~FORCE_AUTO;
-			lp->force |= FORCE_HALF;
-			break;
-		case FORCE_HALF:
-			break;
-		case FORCE_FULL:
-			writereg(dev, PP_TestCTL,
-				 readreg(dev, PP_TestCTL) | FDX_8900);
-			break;
-		}
-		fdx = readreg(dev, PP_TestCTL) & FDX_8900;
-	} else {
-		switch (lp->force & 0xf0) {
-		case FORCE_AUTO:
-			lp->auto_neg_cnf = AUTO_NEG_ENABLE;
-			break;
-		case FORCE_HALF:
-			lp->auto_neg_cnf = 0;
-			break;
-		case FORCE_FULL:
-			lp->auto_neg_cnf = RE_NEG_NOW | ALLOW_FDX;
-			break;
-		}
-
-		writereg(dev, PP_AutoNegCTL, lp->auto_neg_cnf & AUTO_NEG_MASK);
-
-		if ((lp->auto_neg_cnf & AUTO_NEG_BITS) == AUTO_NEG_ENABLE) {
-			pr_info("%s: negotiating duplex...\n", dev->name);
-			while (readreg(dev, PP_AutoNegST) & AUTO_NEG_BUSY) {
-				if (time_after(jiffies, timenow + 4000)) {
-					pr_err("**** Full / half duplex auto-negotiation timed out ****\n");
-					break;
-				}
-			}
-		}
-		fdx = readreg(dev, PP_AutoNegST) & FDX_ACTIVE;
-	}
-	if (fdx)
-		return DETECTED_RJ45F;
-	else
-		return DETECTED_RJ45H;
-}
-
-static int
-detect_bnc(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-
-	cs89_dbg(1, debug, "%s: Attempting BNC\n", dev->name);
-	control_dc_dc(dev, 1);
-
-	writereg(dev, PP_LineCTL, (lp->linectl & ~AUTO_AUI_10BASET) | AUI_ONLY);
-
-	if (send_test_pkt(dev))
-		return DETECTED_BNC;
-	else
-		return DETECTED_NONE;
-}
-
-static int
-detect_aui(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-
-	cs89_dbg(1, debug, "%s: Attempting AUI\n", dev->name);
-	control_dc_dc(dev, 0);
-
-	writereg(dev, PP_LineCTL, (lp->linectl & ~AUTO_AUI_10BASET) | AUI_ONLY);
-
-	if (send_test_pkt(dev))
-		return DETECTED_AUI;
-	else
-		return DETECTED_NONE;
-}
-
-/* We have a good packet(s), get it/them out of the buffers. */
-static void
-net_rx(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	struct sk_buff *skb;
-	int status, length;
-
-	status = ioread16(lp->virt_addr + RX_FRAME_PORT);
-	length = ioread16(lp->virt_addr + RX_FRAME_PORT);
-
-	if ((status & RX_OK) == 0) {
-		count_rx_errors(status, dev);
-		return;
-	}
-
-	/* Malloc up new buffer. */
-	skb = netdev_alloc_skb(dev, length + 2);
-	if (skb == NULL) {
-		dev->stats.rx_dropped++;
-		return;
-	}
-	skb_reserve(skb, 2);	/* longword align L3 header */
-
-	readwords(lp, RX_FRAME_PORT, skb_put(skb, length), length >> 1);
-	if (length & 1)
-		skb->data[length-1] = ioread16(lp->virt_addr + RX_FRAME_PORT);
-
-	cs89_dbg(3, debug, "%s: received %d byte packet of type %x\n",
-		 dev->name, length,
-		 (skb->data[ETH_ALEN + ETH_ALEN] << 8) |
-		 skb->data[ETH_ALEN + ETH_ALEN + 1]);
-
-	skb->protocol = eth_type_trans(skb, dev);
-	netif_rx(skb);
-	dev->stats.rx_packets++;
-	dev->stats.rx_bytes += length;
-}
-
-/* The typical workload of the driver:
- * Handle the network interface interrupts.
- */
-
-static irqreturn_t net_interrupt(int irq, void *dev_id)
-{
-	struct net_device *dev = dev_id;
-	struct net_local *lp;
-	int status;
-	int handled = 0;
-
-	lp = netdev_priv(dev);
-
-	/* we MUST read all the events out of the ISQ, otherwise we'll never
-	 * get interrupted again.  As a consequence, we can't have any limit
-	 * on the number of times we loop in the interrupt handler.  The
-	 * hardware guarantees that eventually we'll run out of events.  Of
-	 * course, if you're on a slow machine, and packets are arriving
-	 * faster than you can read them off, you're screwed.  Hasta la
-	 * vista, baby!
-	 */
-	while ((status = ioread16(lp->virt_addr + ISQ_PORT))) {
-		cs89_dbg(4, debug, "%s: event=%04x\n", dev->name, status);
-		handled = 1;
-		switch (status & ISQ_EVENT_MASK) {
-		case ISQ_RECEIVER_EVENT:
-			/* Got a packet(s). */
-			net_rx(dev);
-			break;
-		case ISQ_TRANSMITTER_EVENT:
-			dev->stats.tx_packets++;
-			netif_wake_queue(dev);	/* Inform upper layers. */
-			if ((status & (TX_OK |
-				       TX_LOST_CRS |
-				       TX_SQE_ERROR |
-				       TX_LATE_COL |
-				       TX_16_COL)) != TX_OK) {
-				if ((status & TX_OK) == 0)
-					dev->stats.tx_errors++;
-				if (status & TX_LOST_CRS)
-					dev->stats.tx_carrier_errors++;
-				if (status & TX_SQE_ERROR)
-					dev->stats.tx_heartbeat_errors++;
-				if (status & TX_LATE_COL)
-					dev->stats.tx_window_errors++;
-				if (status & TX_16_COL)
-					dev->stats.tx_aborted_errors++;
-			}
-			break;
-		case ISQ_BUFFER_EVENT:
-			if (status & READY_FOR_TX) {
-				/* we tried to transmit a packet earlier,
-				 * but inexplicably ran out of buffers.
-				 * That shouldn't happen since we only ever
-				 * load one packet.  Shrug.  Do the right
-				 * thing anyway.
-				 */
-				netif_wake_queue(dev);	/* Inform upper layers. */
-			}
-			if (status & TX_UNDERRUN) {
-				cs89_dbg(0, err, "%s: transmit underrun\n",
-					 dev->name);
-				lp->send_underrun++;
-				if (lp->send_underrun == 3)
-					lp->send_cmd = TX_AFTER_381;
-				else if (lp->send_underrun == 6)
-					lp->send_cmd = TX_AFTER_ALL;
-				/* transmit cycle is done, although
-				 * frame wasn't transmitted - this
-				 * avoids having to wait for the upper
-				 * layers to timeout on us, in the
-				 * event of a tx underrun
-				 */
-				netif_wake_queue(dev);	/* Inform upper layers. */
-			}
-#if ALLOW_DMA
-			if (lp->use_dma && (status & RX_DMA)) {
-				int count = readreg(dev, PP_DmaFrameCnt);
-				while (count) {
-					cs89_dbg(5, debug,
-						 "%s: receiving %d DMA frames\n",
-						 dev->name, count);
-					if (count > 1)
-						cs89_dbg(2, debug,
-							 "%s: receiving %d DMA frames\n",
-							 dev->name, count);
-					dma_rx(dev);
-					if (--count == 0)
-						count = readreg(dev, PP_DmaFrameCnt);
-					if (count > 0)
-						cs89_dbg(2, debug,
-							 "%s: continuing with %d DMA frames\n",
-							 dev->name, count);
-				}
-			}
-#endif
-			break;
-		case ISQ_RX_MISS_EVENT:
-			dev->stats.rx_missed_errors += (status >> 6);
-			break;
-		case ISQ_TX_COL_EVENT:
-			dev->stats.collisions += (status >> 6);
-			break;
-		}
-	}
-	return IRQ_RETVAL(handled);
-}
-
-/* Open/initialize the board.  This is called (in the current kernel)
-   sometime after booting when the 'ifconfig' program is run.
-
-   This routine should set everything up anew at each open, even
-   registers that "should" only need to be set once at boot, so that
-   there is non-reboot way to recover if something goes wrong.
-*/
-
-/* AKPM: do we need to do any locking here? */
-
-static int
-net_open(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	int result = 0;
-	int i;
-	int ret;
-
-	if (dev->irq < 2) {
-		/* Allow interrupts to be generated by the chip */
-/* Cirrus' release had this: */
-#if 0
-		writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL) | ENABLE_IRQ);
-#endif
-/* And 2.3.47 had this: */
-		writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
-
-		for (i = 2; i < CS8920_NO_INTS; i++) {
-			if ((1 << i) & lp->irq_map) {
-				if (request_irq(i, net_interrupt, 0, dev->name,
-						dev) == 0) {
-					dev->irq = i;
-					write_irq(dev, lp->chip_type, i);
-					/* writereg(dev, PP_BufCFG, GENERATE_SW_INTERRUPT); */
-					break;
-				}
-			}
-		}
-
-		if (i >= CS8920_NO_INTS) {
-			writereg(dev, PP_BusCTL, 0);	/* disable interrupts. */
-			pr_err("can't get an interrupt\n");
-			ret = -EAGAIN;
-			goto bad_out;
-		}
-	} else {
-#if IS_ENABLED(CONFIG_CS89x0_ISA)
-		if (((1 << dev->irq) & lp->irq_map) == 0) {
-			pr_err("%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
-			       dev->name, dev->irq, lp->irq_map);
-			ret = -EAGAIN;
-			goto bad_out;
-		}
-#endif
-/* FIXME: Cirrus' release had this: */
-		writereg(dev, PP_BusCTL, readreg(dev, PP_BusCTL)|ENABLE_IRQ);
-/* And 2.3.47 had this: */
-#if 0
-		writereg(dev, PP_BusCTL, ENABLE_IRQ | MEMORY_ON);
-#endif
-		write_irq(dev, lp->chip_type, dev->irq);
-		ret = request_irq(dev->irq, net_interrupt, 0, dev->name, dev);
-		if (ret) {
-			pr_err("request_irq(%d) failed\n", dev->irq);
-			goto bad_out;
-		}
-	}
-
-#if ALLOW_DMA
-	if (lp->use_dma && (lp->isa_config & ANY_ISA_DMA)) {
-		unsigned long flags;
-		lp->dma_buff = (unsigned char *)__get_dma_pages(GFP_KERNEL,
-								get_order(lp->dmasize * 1024));
-		if (!lp->dma_buff) {
-			pr_err("%s: cannot get %dK memory for DMA\n",
-			       dev->name, lp->dmasize);
-			goto release_irq;
-		}
-		cs89_dbg(1, debug, "%s: dma %lx %lx\n",
-			 dev->name,
-			 (unsigned long)lp->dma_buff,
-			 (unsigned long)isa_virt_to_bus(lp->dma_buff));
-		if ((unsigned long)lp->dma_buff >= MAX_DMA_ADDRESS ||
-		    !dma_page_eq(lp->dma_buff,
-				 lp->dma_buff + lp->dmasize * 1024 - 1)) {
-			pr_err("%s: not usable as DMA buffer\n", dev->name);
-			goto release_irq;
-		}
-		memset(lp->dma_buff, 0, lp->dmasize * 1024);	/* Why? */
-		if (request_dma(dev->dma, dev->name)) {
-			pr_err("%s: cannot get dma channel %d\n",
-			       dev->name, dev->dma);
-			goto release_irq;
-		}
-		write_dma(dev, lp->chip_type, dev->dma);
-		lp->rx_dma_ptr = lp->dma_buff;
-		lp->end_dma_buff = lp->dma_buff + lp->dmasize * 1024;
-		spin_lock_irqsave(&lp->lock, flags);
-		disable_dma(dev->dma);
-		clear_dma_ff(dev->dma);
-		set_dma_mode(dev->dma, DMA_RX_MODE); /* auto_init as well */
-		set_dma_addr(dev->dma, isa_virt_to_bus(lp->dma_buff));
-		set_dma_count(dev->dma, lp->dmasize * 1024);
-		enable_dma(dev->dma);
-		spin_unlock_irqrestore(&lp->lock, flags);
-	}
-#endif	/* ALLOW_DMA */
-
-	/* set the Ethernet address */
-	for (i = 0; i < ETH_ALEN / 2; i++)
-		writereg(dev, PP_IA + i * 2,
-			 (dev->dev_addr[i * 2] |
-			  (dev->dev_addr[i * 2 + 1] << 8)));
-
-	/* while we're testing the interface, leave interrupts disabled */
-	writereg(dev, PP_BusCTL, MEMORY_ON);
-
-	/* Set the LineCTL quintuplet based on adapter configuration read from EEPROM */
-	if ((lp->adapter_cnf & A_CNF_EXTND_10B_2) &&
-	    (lp->adapter_cnf & A_CNF_LOW_RX_SQUELCH))
-		lp->linectl = LOW_RX_SQUELCH;
-	else
-		lp->linectl = 0;
-
-	/* check to make sure that they have the "right" hardware available */
-	switch (lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
-	case A_CNF_MEDIA_10B_T:
-		result = lp->adapter_cnf & A_CNF_10B_T;
-		break;
-	case A_CNF_MEDIA_AUI:
-		result = lp->adapter_cnf & A_CNF_AUI;
-		break;
-	case A_CNF_MEDIA_10B_2:
-		result = lp->adapter_cnf & A_CNF_10B_2;
-		break;
-	default:
-		result = lp->adapter_cnf & (A_CNF_10B_T |
-					    A_CNF_AUI |
-					    A_CNF_10B_2);
-	}
-	if (!result) {
-		pr_err("%s: EEPROM is configured for unavailable media\n",
-		       dev->name);
-release_dma:
-#if ALLOW_DMA
-		free_dma(dev->dma);
-release_irq:
-		release_dma_buff(lp);
-#endif
-		writereg(dev, PP_LineCTL,
-			 readreg(dev, PP_LineCTL) & ~(SERIAL_TX_ON | SERIAL_RX_ON));
-		free_irq(dev->irq, dev);
-		ret = -EAGAIN;
-		goto bad_out;
-	}
-
-	/* set the hardware to the configured choice */
-	switch (lp->adapter_cnf & A_CNF_MEDIA_TYPE) {
-	case A_CNF_MEDIA_10B_T:
-		result = detect_tp(dev);
-		if (result == DETECTED_NONE) {
-			pr_warn("%s: 10Base-T (RJ-45) has no cable\n",
-				dev->name);
-			if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
-				result = DETECTED_RJ45H; /* Yes! I don't care if I see a link pulse */
-		}
-		break;
-	case A_CNF_MEDIA_AUI:
-		result = detect_aui(dev);
-		if (result == DETECTED_NONE) {
-			pr_warn("%s: 10Base-5 (AUI) has no cable\n", dev->name);
-			if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
-				result = DETECTED_AUI; /* Yes! I don't care if I see a carrier */
-		}
-		break;
-	case A_CNF_MEDIA_10B_2:
-		result = detect_bnc(dev);
-		if (result == DETECTED_NONE) {
-			pr_warn("%s: 10Base-2 (BNC) has no cable\n", dev->name);
-			if (lp->auto_neg_cnf & IMM_BIT) /* check "ignore missing media" bit */
-				result = DETECTED_BNC; /* Yes! I don't care if I can xmit a packet */
-		}
-		break;
-	case A_CNF_MEDIA_AUTO:
-		writereg(dev, PP_LineCTL, lp->linectl | AUTO_AUI_10BASET);
-		if (lp->adapter_cnf & A_CNF_10B_T) {
-			result = detect_tp(dev);
-			if (result != DETECTED_NONE)
-				break;
-		}
-		if (lp->adapter_cnf & A_CNF_AUI) {
-			result = detect_aui(dev);
-			if (result != DETECTED_NONE)
-				break;
-		}
-		if (lp->adapter_cnf & A_CNF_10B_2) {
-			result = detect_bnc(dev);
-			if (result != DETECTED_NONE)
-				break;
-		}
-		pr_err("%s: no media detected\n", dev->name);
-		goto release_dma;
-	}
-	switch (result) {
-	case DETECTED_NONE:
-		pr_err("%s: no network cable attached to configured media\n",
-		       dev->name);
-		goto release_dma;
-	case DETECTED_RJ45H:
-		pr_info("%s: using half-duplex 10Base-T (RJ-45)\n", dev->name);
-		break;
-	case DETECTED_RJ45F:
-		pr_info("%s: using full-duplex 10Base-T (RJ-45)\n", dev->name);
-		break;
-	case DETECTED_AUI:
-		pr_info("%s: using 10Base-5 (AUI)\n", dev->name);
-		break;
-	case DETECTED_BNC:
-		pr_info("%s: using 10Base-2 (BNC)\n", dev->name);
-		break;
-	}
-
-	/* Turn on both receive and transmit operations */
-	writereg(dev, PP_LineCTL,
-		 readreg(dev, PP_LineCTL) | SERIAL_RX_ON | SERIAL_TX_ON);
-
-	/* Receive only error free packets addressed to this card */
-	lp->rx_mode = 0;
-	writereg(dev, PP_RxCTL, DEF_RX_ACCEPT);
-
-	lp->curr_rx_cfg = RX_OK_ENBL | RX_CRC_ERROR_ENBL;
-
-	if (lp->isa_config & STREAM_TRANSFER)
-		lp->curr_rx_cfg |= RX_STREAM_ENBL;
-#if ALLOW_DMA
-	set_dma_cfg(dev);
-#endif
-	writereg(dev, PP_RxCFG, lp->curr_rx_cfg);
-
-	writereg(dev, PP_TxCFG, (TX_LOST_CRS_ENBL |
-				 TX_SQE_ERROR_ENBL |
-				 TX_OK_ENBL |
-				 TX_LATE_COL_ENBL |
-				 TX_JBR_ENBL |
-				 TX_ANY_COL_ENBL |
-				 TX_16_COL_ENBL));
-
-	writereg(dev, PP_BufCFG, (READY_FOR_TX_ENBL |
-				  RX_MISS_COUNT_OVRFLOW_ENBL |
-#if ALLOW_DMA
-				  dma_bufcfg(dev) |
-#endif
-				  TX_COL_COUNT_OVRFLOW_ENBL |
-				  TX_UNDERRUN_ENBL));
-
-	/* now that we've got our act together, enable everything */
-	writereg(dev, PP_BusCTL, (ENABLE_IRQ
-				  | (dev->mem_start ? MEMORY_ON : 0) /* turn memory on */
-#if ALLOW_DMA
-				  | dma_busctl(dev)
-#endif
-			 ));
-	netif_start_queue(dev);
-	cs89_dbg(1, debug, "net_open() succeeded\n");
-	return 0;
-bad_out:
-	return ret;
-}
-
-/* The inverse routine to net_open(). */
-static int
-net_close(struct net_device *dev)
-{
-#if ALLOW_DMA
-	struct net_local *lp = netdev_priv(dev);
-#endif
-
-	netif_stop_queue(dev);
-
-	writereg(dev, PP_RxCFG, 0);
-	writereg(dev, PP_TxCFG, 0);
-	writereg(dev, PP_BufCFG, 0);
-	writereg(dev, PP_BusCTL, 0);
-
-	free_irq(dev->irq, dev);
-
-#if ALLOW_DMA
-	if (lp->use_dma && lp->dma) {
-		free_dma(dev->dma);
-		release_dma_buff(lp);
-	}
-#endif
-
-	/* Update the statistics here. */
-	return 0;
-}
-
-/* Get the current statistics.
- * This may be called with the card open or closed.
- */
-static struct net_device_stats *
-net_get_stats(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	unsigned long flags;
-
-	spin_lock_irqsave(&lp->lock, flags);
-	/* Update the statistics from the device registers. */
-	dev->stats.rx_missed_errors += (readreg(dev, PP_RxMiss) >> 6);
-	dev->stats.collisions += (readreg(dev, PP_TxCol) >> 6);
-	spin_unlock_irqrestore(&lp->lock, flags);
-
-	return &dev->stats;
-}
-
-static void net_timeout(struct net_device *dev, unsigned int txqueue)
-{
-	/* If we get here, some higher level has decided we are broken.
-	   There should really be a "kick me" function call instead. */
-	cs89_dbg(0, err, "%s: transmit timed out, %s?\n",
-		 dev->name,
-		 tx_done(dev) ? "IRQ conflict" : "network cable problem");
-	/* Try to restart the adaptor. */
-	netif_wake_queue(dev);
-}
-
-static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	unsigned long flags;
-
-	cs89_dbg(3, debug, "%s: sent %d byte packet of type %x\n",
-		 dev->name, skb->len,
-		 ((skb->data[ETH_ALEN + ETH_ALEN] << 8) |
-		  skb->data[ETH_ALEN + ETH_ALEN + 1]));
-
-	/* keep the upload from being interrupted, since we
-	 * ask the chip to start transmitting before the
-	 * whole packet has been completely uploaded.
-	 */
-
-	spin_lock_irqsave(&lp->lock, flags);
-	netif_stop_queue(dev);
-
-	/* initiate a transmit sequence */
-	iowrite16(lp->send_cmd, lp->virt_addr + TX_CMD_PORT);
-	iowrite16(skb->len, lp->virt_addr + TX_LEN_PORT);
-
-	/* Test to see if the chip has allocated memory for the packet */
-	if ((readreg(dev, PP_BusST) & READY_FOR_TX_NOW) == 0) {
-		/* Gasp!  It hasn't.  But that shouldn't happen since
-		 * we're waiting for TxOk, so return 1 and requeue this packet.
-		 */
-
-		spin_unlock_irqrestore(&lp->lock, flags);
-		cs89_dbg(0, err, "Tx buffer not free!\n");
-		return NETDEV_TX_BUSY;
-	}
-	/* Write the contents of the packet */
-	writewords(lp, TX_FRAME_PORT, skb->data, (skb->len + 1) >> 1);
-	spin_unlock_irqrestore(&lp->lock, flags);
-	dev->stats.tx_bytes += skb->len;
-	dev_consume_skb_any(skb);
-
-	/* We DO NOT call netif_wake_queue() here.
-	 * We also DO NOT call netif_start_queue().
-	 *
-	 * Either of these would cause another bottom half run through
-	 * net_send_packet() before this packet has fully gone out.
-	 * That causes us to hit the "Gasp!" above and the send is rescheduled.
-	 * it runs like a dog.  We just return and wait for the Tx completion
-	 * interrupt handler to restart the netdevice layer
-	 */
-
-	return NETDEV_TX_OK;
-}
-
-static void set_multicast_list(struct net_device *dev)
-{
-	struct net_local *lp = netdev_priv(dev);
-	unsigned long flags;
-	u16 cfg;
-
-	spin_lock_irqsave(&lp->lock, flags);
-	if (dev->flags & IFF_PROMISC)
-		lp->rx_mode = RX_ALL_ACCEPT;
-	else if ((dev->flags & IFF_ALLMULTI) || !netdev_mc_empty(dev))
-		/* The multicast-accept list is initialized to accept-all,
-		 * and we rely on higher-level filtering for now.
-		 */
-		lp->rx_mode = RX_MULTCAST_ACCEPT;
-	else
-		lp->rx_mode = 0;
-
-	writereg(dev, PP_RxCTL, DEF_RX_ACCEPT | lp->rx_mode);
-
-	/* in promiscuous mode, we accept errored packets,
-	 * so we have to enable interrupts on them also
-	 */
-	cfg = lp->curr_rx_cfg;
-	if (lp->rx_mode == RX_ALL_ACCEPT)
-		cfg |= RX_CRC_ERROR_ENBL | RX_RUNT_ENBL | RX_EXTRA_DATA_ENBL;
-	writereg(dev, PP_RxCFG, cfg);
-	spin_unlock_irqrestore(&lp->lock, flags);
-}
-
-static int set_mac_address(struct net_device *dev, void *p)
-{
-	int i;
-	struct sockaddr *addr = p;
-
-	if (netif_running(dev))
-		return -EBUSY;
-
-	eth_hw_addr_set(dev, addr->sa_data);
-
-	cs89_dbg(0, debug, "%s: Setting MAC address to %pM\n",
-		 dev->name, dev->dev_addr);
-
-	/* set the Ethernet address */
-	for (i = 0; i < ETH_ALEN / 2; i++)
-		writereg(dev, PP_IA + i * 2,
-			 (dev->dev_addr[i * 2] |
-			  (dev->dev_addr[i * 2 + 1] << 8)));
-
-	return 0;
-}
-
-#ifdef CONFIG_NET_POLL_CONTROLLER
-/*
- * Polling receive - used by netconsole and other diagnostic tools
- * to allow network i/o with interrupts disabled.
- */
-static void net_poll_controller(struct net_device *dev)
-{
-	disable_irq(dev->irq);
-	net_interrupt(dev->irq, dev);
-	enable_irq(dev->irq);
-}
-#endif
-
-static const struct net_device_ops net_ops = {
-	.ndo_open		= net_open,
-	.ndo_stop		= net_close,
-	.ndo_tx_timeout		= net_timeout,
-	.ndo_start_xmit		= net_send_packet,
-	.ndo_get_stats		= net_get_stats,
-	.ndo_set_rx_mode	= set_multicast_list,
-	.ndo_set_mac_address	= set_mac_address,
-#ifdef CONFIG_NET_POLL_CONTROLLER
-	.ndo_poll_controller	= net_poll_controller,
-#endif
-	.ndo_validate_addr	= eth_validate_addr,
-};
-
-static void __init reset_chip(struct net_device *dev)
-{
-#if !defined(CONFIG_MACH_MX31ADS)
-	struct net_local *lp = netdev_priv(dev);
-	unsigned long reset_start_time;
-
-	writereg(dev, PP_SelfCTL, readreg(dev, PP_SelfCTL) | POWER_ON_RESET);
-
-	/* wait 30 ms */
-	msleep(30);
-
-	if (lp->chip_type != CS8900) {
-		/* Hardware problem requires PNP registers to be reconfigured after a reset */
-		iowrite16(PP_CS8920_ISAINT, lp->virt_addr + ADD_PORT);
-		iowrite8(dev->irq, lp->virt_addr + DATA_PORT);
-		iowrite8(0, lp->virt_addr + DATA_PORT + 1);
-
-		iowrite16(PP_CS8920_ISAMemB, lp->virt_addr + ADD_PORT);
-		iowrite8((dev->mem_start >> 16) & 0xff,
-			 lp->virt_addr + DATA_PORT);
-		iowrite8((dev->mem_start >> 8) & 0xff,
-			 lp->virt_addr + DATA_PORT + 1);
-	}
-
-	/* Wait until the chip is reset */
-	reset_start_time = jiffies;
-	while ((readreg(dev, PP_SelfST) & INIT_DONE) == 0 &&
-	       time_before(jiffies, reset_start_time + 2))
-		;
-#endif /* !CONFIG_MACH_MX31ADS */
-}
-
-/* This is the real probe routine.
- * Linux has a history of friendly device probes on the ISA bus.
- * A good device probes avoids doing writes, and
- * verifies that the correct device exists and functions.
- * Return 0 on success.
- */
-static int __init
-cs89x0_probe1(struct net_device *dev, void __iomem *ioaddr, int modular)
-{
-	struct net_local *lp = netdev_priv(dev);
-	int i;
-	int tmp;
-	unsigned rev_type = 0;
-	int eeprom_buff[CHKSUM_LEN];
-	u8 addr[ETH_ALEN];
-	int retval;
-
-	/* Initialize the device structure. */
-	if (!modular) {
-		memset(lp, 0, sizeof(*lp));
-		spin_lock_init(&lp->lock);
-#ifndef MODULE
-#if ALLOW_DMA
-		if (g_cs89x0_dma) {
-			lp->use_dma = 1;
-			lp->dma = g_cs89x0_dma;
-			lp->dmasize = 16;	/* Could make this an option... */
-		}
-#endif
-		lp->force = g_cs89x0_media__force;
-#endif
-	}
-
-	pr_debug("PP_addr at %p[%x]: 0x%x\n",
-		 ioaddr, ADD_PORT, ioread16(ioaddr + ADD_PORT));
-	iowrite16(PP_ChipID, ioaddr + ADD_PORT);
-
-	tmp = ioread16(ioaddr + DATA_PORT);
-	if (tmp != CHIP_EISA_ID_SIG) {
-		pr_debug("%s: incorrect signature at %p[%x]: 0x%x!="
-			 CHIP_EISA_ID_SIG_STR "\n",
-			 dev->name, ioaddr, DATA_PORT, tmp);
-		retval = -ENODEV;
-		goto out1;
-	}
-
-	lp->virt_addr = ioaddr;
-
-	/* get the chip type */
-	rev_type = readreg(dev, PRODUCT_ID_ADD);
-	lp->chip_type = rev_type & ~REVISON_BITS;
-	lp->chip_revision = ((rev_type & REVISON_BITS) >> 8) + 'A';
-
-	/* Check the chip type and revision in order to set the correct
-	 * send command.  CS8920 revision C and CS8900 revision F can use
-	 * the faster send.
-	 */
-	lp->send_cmd = TX_AFTER_381;
-	if (lp->chip_type == CS8900 && lp->chip_revision >= 'F')
-		lp->send_cmd = TX_NOW;
-	if (lp->chip_type != CS8900 && lp->chip_revision >= 'C')
-		lp->send_cmd = TX_NOW;
-
-	pr_info_once("%s\n", version);
-
-	pr_info("%s: cs89%c0%s rev %c found at %p ",
-		dev->name,
-		lp->chip_type == CS8900  ? '0' : '2',
-		lp->chip_type == CS8920M ? "M" : "",
-		lp->chip_revision,
-		lp->virt_addr);
-
-	reset_chip(dev);
-
-	/* Here we read the current configuration of the chip.
-	 * If there is no Extended EEPROM then the idea is to not disturb
-	 * the chip configuration, it should have been correctly setup by
-	 * automatic EEPROM read on reset. So, if the chip says it read
-	 * the EEPROM the driver will always do *something* instead of
-	 * complain that adapter_cnf is 0.
-	 */
-
-	if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) ==
-	    (EEPROM_OK | EEPROM_PRESENT)) {
-		/* Load the MAC. */
-		for (i = 0; i < ETH_ALEN / 2; i++) {
-			unsigned int Addr;
-			Addr = readreg(dev, PP_IA + i * 2);
-			addr[i * 2] = Addr & 0xFF;
-			addr[i * 2 + 1] = Addr >> 8;
-		}
-		eth_hw_addr_set(dev, addr);
-
-		/* Load the Adapter Configuration.
-		 * Note:  Barring any more specific information from some
-		 * other source (ie EEPROM+Schematics), we would not know
-		 * how to operate a 10Base2 interface on the AUI port.
-		 * However, since we  do read the status of HCB1 and use
-		 * settings that always result in calls to control_dc_dc(dev,0)
-		 * a BNC interface should work if the enable pin
-		 * (dc/dc converter) is on HCB1.
-		 * It will be called AUI however.
-		 */
-
-		lp->adapter_cnf = 0;
-		i = readreg(dev, PP_LineCTL);
-		/* Preserve the setting of the HCB1 pin. */
-		if ((i & (HCB1 | HCB1_ENBL)) == (HCB1 | HCB1_ENBL))
-			lp->adapter_cnf |= A_CNF_DC_DC_POLARITY;
-		/* Save the sqelch bit */
-		if ((i & LOW_RX_SQUELCH) == LOW_RX_SQUELCH)
-			lp->adapter_cnf |= A_CNF_EXTND_10B_2 | A_CNF_LOW_RX_SQUELCH;
-		/* Check if the card is in 10Base-t only mode */
-		if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == 0)
-			lp->adapter_cnf |=  A_CNF_10B_T | A_CNF_MEDIA_10B_T;
-		/* Check if the card is in AUI only mode */
-		if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUI_ONLY)
-			lp->adapter_cnf |=  A_CNF_AUI | A_CNF_MEDIA_AUI;
-		/* Check if the card is in Auto mode. */
-		if ((i & (AUI_ONLY | AUTO_AUI_10BASET)) == AUTO_AUI_10BASET)
-			lp->adapter_cnf |=  A_CNF_AUI | A_CNF_10B_T |
-				A_CNF_MEDIA_AUI | A_CNF_MEDIA_10B_T | A_CNF_MEDIA_AUTO;
-
-		cs89_dbg(1, info, "%s: PP_LineCTL=0x%x, adapter_cnf=0x%x\n",
-			 dev->name, i, lp->adapter_cnf);
-
-		/* IRQ. Other chips already probe, see below. */
-		if (lp->chip_type == CS8900)
-			lp->isa_config = readreg(dev, PP_CS8900_ISAINT) & INT_NO_MASK;
-
-		pr_cont("[Cirrus EEPROM] ");
-	}
-
-	pr_cont("\n");
-
-	/* First check to see if an EEPROM is attached. */
-
-	if ((readreg(dev, PP_SelfST) & EEPROM_PRESENT) == 0)
-		pr_warn("No EEPROM, relying on command line....\n");
-	else if (get_eeprom_data(dev, START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) {
-		pr_warn("EEPROM read failed, relying on command line\n");
-	} else if (get_eeprom_cksum(START_EEPROM_DATA, CHKSUM_LEN, eeprom_buff) < 0) {
-		/* Check if the chip was able to read its own configuration starting
-		   at 0 in the EEPROM*/
-		if ((readreg(dev, PP_SelfST) & (EEPROM_OK | EEPROM_PRESENT)) !=
-		    (EEPROM_OK | EEPROM_PRESENT))
-			pr_warn("Extended EEPROM checksum bad and no Cirrus EEPROM, relying on command line\n");
-
-	} else {
-		/* This reads an extended EEPROM that is not documented
-		 * in the CS8900 datasheet.
-		 */
-
-		/* get transmission control word  but keep the autonegotiation bits */
-		if (!lp->auto_neg_cnf)
-			lp->auto_neg_cnf = eeprom_buff[AUTO_NEG_CNF_OFFSET / 2];
-		/* Store adapter configuration */
-		if (!lp->adapter_cnf)
-			lp->adapter_cnf = eeprom_buff[ADAPTER_CNF_OFFSET / 2];
-		/* Store ISA configuration */
-		lp->isa_config = eeprom_buff[ISA_CNF_OFFSET / 2];
-		dev->mem_start = eeprom_buff[PACKET_PAGE_OFFSET / 2] << 8;
-
-		/* eeprom_buff has 32-bit ints, so we can't just memcpy it */
-		/* store the initial memory base address */
-		for (i = 0; i < ETH_ALEN / 2; i++) {
-			addr[i * 2] = eeprom_buff[i];
-			addr[i * 2 + 1] = eeprom_buff[i] >> 8;
-		}
-		eth_hw_addr_set(dev, addr);
-		cs89_dbg(1, debug, "%s: new adapter_cnf: 0x%x\n",
-			 dev->name, lp->adapter_cnf);
-	}
-
-	/* allow them to force multiple transceivers.  If they force multiple, autosense */
-	{
-		int count = 0;
-		if (lp->force & FORCE_RJ45) {
-			lp->adapter_cnf |= A_CNF_10B_T;
-			count++;
-		}
-		if (lp->force & FORCE_AUI) {
-			lp->adapter_cnf |= A_CNF_AUI;
-			count++;
-		}
-		if (lp->force & FORCE_BNC) {
-			lp->adapter_cnf |= A_CNF_10B_2;
-			count++;
-		}
-		if (count > 1)
-			lp->adapter_cnf |= A_CNF_MEDIA_AUTO;
-		else if (lp->force & FORCE_RJ45)
-			lp->adapter_cnf |= A_CNF_MEDIA_10B_T;
-		else if (lp->force & FORCE_AUI)
-			lp->adapter_cnf |= A_CNF_MEDIA_AUI;
-		else if (lp->force & FORCE_BNC)
-			lp->adapter_cnf |= A_CNF_MEDIA_10B_2;
-	}
-
-	cs89_dbg(1, debug, "%s: after force 0x%x, adapter_cnf=0x%x\n",
-		 dev->name, lp->force, lp->adapter_cnf);
-
-	/* FIXME: We don't let you set dc-dc polarity or low RX squelch from the command line: add it here */
-
-	/* FIXME: We don't let you set the IMM bit from the command line: add it to lp->auto_neg_cnf here */
-
-	/* FIXME: we don't set the Ethernet address on the command line.  Use
-	 * ifconfig IFACE hw ether AABBCCDDEEFF
-	 */
-
-	pr_info("media %s%s%s",
-		(lp->adapter_cnf & A_CNF_10B_T) ? "RJ-45," : "",
-		(lp->adapter_cnf & A_CNF_AUI) ? "AUI," : "",
-		(lp->adapter_cnf & A_CNF_10B_2) ? "BNC," : "");
-
-	lp->irq_map = 0xffff;
-
-	/* If this is a CS8900 then no pnp soft */
-	if (lp->chip_type != CS8900 &&
-	    /* Check if the ISA IRQ has been set  */
-	    (i = readreg(dev, PP_CS8920_ISAINT) & 0xff,
-	     (i != 0 && i < CS8920_NO_INTS))) {
-		if (!dev->irq)
-			dev->irq = i;
-	} else {
-		i = lp->isa_config & INT_NO_MASK;
-#if IS_ENABLED(CONFIG_CS89x0_ISA)
-		if (lp->chip_type == CS8900) {
-			/* Translate the IRQ using the IRQ mapping table. */
-			if (i >= ARRAY_SIZE(cs8900_irq_map))
-				pr_err("invalid ISA interrupt number %d\n", i);
-			else
-				i = cs8900_irq_map[i];
-
-			lp->irq_map = CS8900_IRQ_MAP; /* fixed IRQ map for CS8900 */
-		} else {
-			int irq_map_buff[IRQ_MAP_LEN/2];
-
-			if (get_eeprom_data(dev, IRQ_MAP_EEPROM_DATA,
-					    IRQ_MAP_LEN / 2,
-					    irq_map_buff) >= 0) {
-				if ((irq_map_buff[0] & 0xff) == PNP_IRQ_FRMT)
-					lp->irq_map = ((irq_map_buff[0] >> 8) |
-						       (irq_map_buff[1] << 8));
-			}
-		}
-#endif
-		if (!dev->irq)
-			dev->irq = i;
-	}
-
-	pr_cont(" IRQ %d", dev->irq);
-
-#if ALLOW_DMA
-	if (lp->use_dma) {
-		get_dma_channel(dev);
-		pr_cont(", DMA %d", dev->dma);
-	} else
-#endif
-		pr_cont(", programmed I/O");
-
-	/* print the ethernet address. */
-	pr_cont(", MAC %pM\n", dev->dev_addr);
-
-	dev->netdev_ops	= &net_ops;
-	dev->watchdog_timeo = HZ;
-
-	cs89_dbg(0, info, "cs89x0_probe1() successful\n");
-
-	retval = register_netdev(dev);
-	if (retval)
-		goto out2;
-	return 0;
-out2:
-	iowrite16(PP_ChipID, lp->virt_addr + ADD_PORT);
-out1:
-	return retval;
-}
-
-#if IS_ENABLED(CONFIG_CS89x0_ISA)
-/*
- * This function converts the I/O port address used by the cs89x0_probe() and
- * init_module() functions to the I/O memory address used by the
- * cs89x0_probe1() function.
- */
-static int __init
-cs89x0_ioport_probe(struct net_device *dev, unsigned long ioport, int modular)
-{
-	struct net_local *lp = netdev_priv(dev);
-	int ret;
-	void __iomem *io_mem;
-
-	if (!lp)
-		return -ENOMEM;
-
-	dev->base_addr = ioport;
-
-	if (!request_region(ioport, NETCARD_IO_EXTENT, DRV_NAME)) {
-		ret = -EBUSY;
-		goto out;
-	}
-
-	io_mem = ioport_map(ioport & ~3, NETCARD_IO_EXTENT);
-	if (!io_mem) {
-		ret = -ENOMEM;
-		goto release;
-	}
-
-	/* if they give us an odd I/O address, then do ONE write to
-	 * the address port, to get it back to address zero, where we
-	 * expect to find the EISA signature word. An IO with a base of 0x3
-	 * will skip the test for the ADD_PORT.
-	 */
-	if (ioport & 1) {
-		cs89_dbg(1, info, "%s: odd ioaddr 0x%lx\n", dev->name, ioport);
-		if ((ioport & 2) != 2) {
-			if ((ioread16(io_mem + ADD_PORT) & ADD_MASK) !=
-			    ADD_SIG) {
-				pr_err("%s: bad signature 0x%x\n",
-				       dev->name, ioread16(io_mem + ADD_PORT));
-				ret = -ENODEV;
-				goto unmap;
-			}
-		}
-	}
-
-	ret = cs89x0_probe1(dev, io_mem, modular);
-	if (!ret)
-		goto out;
-unmap:
-	ioport_unmap(io_mem);
-release:
-	release_region(ioport, NETCARD_IO_EXTENT);
-out:
-	return ret;
-}
-
-#ifndef MODULE
-/* Check for a network adaptor of this type, and return '0' iff one exists.
- * If dev->base_addr == 0, probe all likely locations.
- * If dev->base_addr == 1, always return failure.
- * If dev->base_addr == 2, allocate space for the device and return success
- * (detachable devices only).
- * Return 0 on success.
- */
-
-struct net_device * __init cs89x0_probe(int unit)
-{
-	struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
-	unsigned *port;
-	int err = 0;
-	int irq;
-	int io;
-
-	if (!dev)
-		return ERR_PTR(-ENODEV);
-
-	sprintf(dev->name, "eth%d", unit);
-	netdev_boot_setup_check(dev);
-	io = dev->base_addr;
-	irq = dev->irq;
-
-	cs89_dbg(0, info, "cs89x0_probe(0x%x)\n", io);
-
-	if (io > 0x1ff)	{	/* Check a single specified location. */
-		err = cs89x0_ioport_probe(dev, io, 0);
-	} else if (io != 0) {	/* Don't probe at all. */
-		err = -ENXIO;
-	} else {
-		for (port = netcard_portlist; *port; port++) {
-			if (cs89x0_ioport_probe(dev, *port, 0) == 0)
-				break;
-			dev->irq = irq;
-		}
-		if (!*port)
-			err = -ENODEV;
-	}
-	if (err)
-		goto out;
-	return dev;
-out:
-	free_netdev(dev);
-	pr_warn("no cs8900 or cs8920 detected.  Be sure to disable PnP with SETUP\n");
-	return ERR_PTR(err);
-}
-#else
-static struct net_device *dev_cs89x0;
-
-/* Support the 'debug' module parm even if we're compiled for non-debug to
- * avoid breaking someone's startup scripts
- */
-
-static int io;
-static int irq;
-static int debug;
-static char media[8];
-static int duplex = -1;
-
-static int use_dma;			/* These generate unused var warnings if ALLOW_DMA = 0 */
-static int dma;
-static int dmasize = 16;		/* or 64 */
-
-module_param_hw(io, int, ioport, 0);
-module_param_hw(irq, int, irq, 0);
-module_param(debug, int, 0);
-module_param_string(media, media, sizeof(media), 0);
-module_param(duplex, int, 0);
-module_param_hw(dma , int, dma, 0);
-module_param(dmasize , int, 0);
-module_param(use_dma , int, 0);
-MODULE_PARM_DESC(io, "cs89x0 I/O base address");
-MODULE_PARM_DESC(irq, "cs89x0 IRQ number");
-#if DEBUGGING
-MODULE_PARM_DESC(debug, "cs89x0 debug level (0-6)");
-#else
-MODULE_PARM_DESC(debug, "(ignored)");
-#endif
-MODULE_PARM_DESC(media, "Set cs89x0 adapter(s) media type(s) (rj45,bnc,aui)");
-/* No other value than -1 for duplex seems to be currently interpreted */
-MODULE_PARM_DESC(duplex, "(ignored)");
-#if ALLOW_DMA
-MODULE_PARM_DESC(dma , "cs89x0 ISA DMA channel; ignored if use_dma=0");
-MODULE_PARM_DESC(dmasize , "cs89x0 DMA size in kB (16,64); ignored if use_dma=0");
-MODULE_PARM_DESC(use_dma , "cs89x0 using DMA (0-1)");
-#else
-MODULE_PARM_DESC(dma , "(ignored)");
-MODULE_PARM_DESC(dmasize , "(ignored)");
-MODULE_PARM_DESC(use_dma , "(ignored)");
-#endif
-
-MODULE_AUTHOR("Mike Cruse, Russwll Nelson <nelson@xxxxxxxxxx>, Andrew Morton");
-MODULE_LICENSE("GPL");
-
-/*
- * media=t             - specify media type
- * or media=2
- * or media=aui
- * or medai=auto
- * duplex=0            - specify forced half/full/autonegotiate duplex
- * debug=#             - debug level
- *
- * Default Chip Configuration:
- * DMA Burst = enabled
- * IOCHRDY Enabled = enabled
- * UseSA = enabled
- * CS8900 defaults to half-duplex if not specified on command-line
- * CS8920 defaults to autoneg if not specified on command-line
- * Use reset defaults for other config parameters
- *
- * Assumptions:
- * media type specified is supported (circuitry is present)
- * if memory address is > 1MB, then required mem decode hw is present
- * if 10B-2, then agent other than driver will enable DC/DC converter
- * (hw or software util)
- */
-
-static int __init cs89x0_isa_init_module(void)
-{
-	struct net_device *dev;
-	struct net_local *lp;
-	int ret = 0;
-
-#if DEBUGGING
-	net_debug = debug;
-#else
-	debug = 0;
-#endif
-	dev = alloc_etherdev(sizeof(struct net_local));
-	if (!dev)
-		return -ENOMEM;
-
-	dev->irq = irq;
-	dev->base_addr = io;
-	lp = netdev_priv(dev);
-
-#if ALLOW_DMA
-	if (use_dma) {
-		lp->use_dma = use_dma;
-		lp->dma = dma;
-		lp->dmasize = dmasize;
-	}
-#endif
-
-	spin_lock_init(&lp->lock);
-
-	/* boy, they'd better get these right */
-	if (!strcmp(media, "rj45"))
-		lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
-	else if (!strcmp(media, "aui"))
-		lp->adapter_cnf = A_CNF_MEDIA_AUI   | A_CNF_AUI;
-	else if (!strcmp(media, "bnc"))
-		lp->adapter_cnf = A_CNF_MEDIA_10B_2 | A_CNF_10B_2;
-	else
-		lp->adapter_cnf = A_CNF_MEDIA_10B_T | A_CNF_10B_T;
-
-	if (duplex == -1)
-		lp->auto_neg_cnf = AUTO_NEG_ENABLE;
-
-	if (io == 0) {
-		pr_err("Module autoprobing not allowed\n");
-		pr_err("Append io=0xNNN\n");
-		ret = -EPERM;
-		goto out;
-	} else if (io <= 0x1ff) {
-		ret = -ENXIO;
-		goto out;
-	}
-
-#if ALLOW_DMA
-	if (use_dma && dmasize != 16 && dmasize != 64) {
-		pr_err("dma size must be either 16K or 64K, not %dK\n",
-		       dmasize);
-		ret = -EPERM;
-		goto out;
-	}
-#endif
-	ret = cs89x0_ioport_probe(dev, io, 1);
-	if (ret)
-		goto out;
-
-	dev_cs89x0 = dev;
-	return 0;
-out:
-	free_netdev(dev);
-	return ret;
-}
-module_init(cs89x0_isa_init_module);
-
-static void __exit cs89x0_isa_cleanup_module(void)
-{
-	struct net_local *lp = netdev_priv(dev_cs89x0);
-
-	unregister_netdev(dev_cs89x0);
-	iowrite16(PP_ChipID, lp->virt_addr + ADD_PORT);
-	ioport_unmap(lp->virt_addr);
-	release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
-	free_netdev(dev_cs89x0);
-}
-module_exit(cs89x0_isa_cleanup_module);
-#endif /* MODULE */
-#endif /* CONFIG_CS89x0_ISA */
-
-#if IS_ENABLED(CONFIG_CS89x0_PLATFORM)
-static int __init cs89x0_platform_probe(struct platform_device *pdev)
-{
-	struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
-	void __iomem *virt_addr;
-	int err;
-
-	if (!dev)
-		return -ENOMEM;
-
-	dev->irq = platform_get_irq(pdev, 0);
-	if (dev->irq < 0) {
-		err = dev->irq;
-		goto free;
-	}
-
-	virt_addr = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(virt_addr)) {
-		err = PTR_ERR(virt_addr);
-		goto free;
-	}
-
-	err = cs89x0_probe1(dev, virt_addr, 0);
-	if (err) {
-		dev_warn(&dev->dev, "no cs8900 or cs8920 detected\n");
-		goto free;
-	}
-
-	platform_set_drvdata(pdev, dev);
-	return 0;
-
-free:
-	free_netdev(dev);
-	return err;
-}
-
-static void cs89x0_platform_remove(struct platform_device *pdev)
-{
-	struct net_device *dev = platform_get_drvdata(pdev);
-
-	/* This platform_get_resource() call will not return NULL, because
-	 * the same call in cs89x0_platform_probe() has returned a non NULL
-	 * value.
-	 */
-	unregister_netdev(dev);
-	free_netdev(dev);
-}
-
-static const struct of_device_id __maybe_unused cs89x0_match[] = {
-	{ .compatible = "cirrus,cs8900", },
-	{ .compatible = "cirrus,cs8920", },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, cs89x0_match);
-
-static struct platform_driver cs89x0_driver = {
-	.driver	= {
-		.name		= DRV_NAME,
-		.of_match_table	= of_match_ptr(cs89x0_match),
-	},
-	.remove = cs89x0_platform_remove,
-};
-
-module_platform_driver_probe(cs89x0_driver, cs89x0_platform_probe);
-
-#endif /* CONFIG_CS89x0_PLATFORM */
-
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Crystal Semiconductor (Now Cirrus Logic) CS89[02]0 network driver");
-MODULE_AUTHOR("Russell Nelson <nelson@xxxxxxxxxx>");

-- 
2.53.0