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Commit 3d29b0c3 authored by John W. Linville's avatar John W. Linville
Browse files

netdevice zd1201: Convert directly reference of netdev->priv to netdev_priv() 



We have some reasons to kill netdev->priv:
1. netdev->priv is equal to netdev_priv().
2. netdev_priv() wraps the calculation of netdev->priv's offset, obviously
   netdev_priv() is more flexible than netdev->priv.
But we cann't kill netdev->priv, because so many drivers reference to it
directly.

OK, becasue Dave S. Miller said, "every direct netdev->priv usage is a bug",
and I want to kill netdev->priv later, I decided to convert all the direct
reference of netdev->priv first.

(Original patch posted by Wang Chen <wangchen@cn.fujitsu.com> w/ above
changelog but using dev->ml_priv.  That doesn't seem appropriate
to me for this driver, so I've revamped it to use netdev_priv()
instead. -- JWL)

Reviewed-by: default avatarWang Chen <wangchen@cn.fujitsu.com>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent 9d2f4720

drivers/net/wireless/zd1201.c

+56 −59
Original line number Diff line number Diff line
@@ -743,7 +743,7 @@ static int zd1201_join(struct zd1201 *zd, char *essid, int essidlen) 


static int zd1201_net_open(struct net_device *dev)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);



	/* Start MAC with wildcard if no essid set */

	if (!zd->mac_enabled)
@@ -781,7 +781,7 @@ static int zd1201_net_stop(struct net_device *dev) 
 */

static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	unsigned char *txbuf = zd->txdata;

	int txbuflen, pad = 0, err;

	struct urb *urb = zd->tx_urb;
@@ -831,7 +831,7 @@ static int zd1201_hard_start_xmit(struct sk_buff *skb, struct net_device *dev) 


static void zd1201_tx_timeout(struct net_device *dev)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);



	if (!zd)

		return;
@@ -846,7 +846,7 @@ static void zd1201_tx_timeout(struct net_device *dev) 
static int zd1201_set_mac_address(struct net_device *dev, void *p)

{

	struct sockaddr *addr = p;

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	int err;



	if (!zd)
@@ -863,21 +863,21 @@ static int zd1201_set_mac_address(struct net_device *dev, void *p) 


static struct net_device_stats *zd1201_get_stats(struct net_device *dev)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);



	return &zd->stats;

}



static struct iw_statistics *zd1201_get_wireless_stats(struct net_device *dev)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);



	return &zd->iwstats;

}



static void zd1201_set_multicast(struct net_device *dev)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	struct dev_mc_list *mc = dev->mc_list;

	unsigned char reqbuf[ETH_ALEN*ZD1201_MAXMULTI];

	int i;
@@ -897,7 +897,7 @@ static void zd1201_set_multicast(struct net_device *dev) 
static int zd1201_config_commit(struct net_device *dev, 

    struct iw_request_info *info, struct iw_point *data, char *essid)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);



	return zd1201_mac_reset(zd);

}
@@ -912,7 +912,7 @@ static int zd1201_get_name(struct net_device *dev, 
static int zd1201_set_freq(struct net_device *dev,

    struct iw_request_info *info, struct iw_freq *freq, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short channel = 0;

	int err;
@@ -937,7 +937,7 @@ static int zd1201_set_freq(struct net_device *dev, 
static int zd1201_get_freq(struct net_device *dev,

    struct iw_request_info *info, struct iw_freq *freq, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short channel;

	int err;
@@ -953,7 +953,7 @@ static int zd1201_get_freq(struct net_device *dev, 
static int zd1201_set_mode(struct net_device *dev,

    struct iw_request_info *info, __u32 *mode, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short porttype, monitor = 0;

	unsigned char buffer[IW_ESSID_MAX_SIZE+2];

	int err;
@@ -1015,7 +1015,7 @@ static int zd1201_set_mode(struct net_device *dev, 
static int zd1201_get_mode(struct net_device *dev,

    struct iw_request_info *info, __u32 *mode, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short porttype;

	int err;
@@ -1091,7 +1091,7 @@ static int zd1201_get_range(struct net_device *dev, 
static int zd1201_get_wap(struct net_device *dev,

    struct iw_request_info *info, struct sockaddr *ap_addr, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	unsigned char buffer[6];



	if (!zd1201_getconfig(zd, ZD1201_RID_COMMSQUALITY, buffer, 6)) {
@@ -1119,7 +1119,7 @@ static int zd1201_set_scan(struct net_device *dev, 
static int zd1201_get_scan(struct net_device *dev,

    struct iw_request_info *info, struct iw_point *srq, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	int err, i, j, enabled_save;

	struct iw_event iwe;

	char *cev = extra;
@@ -1211,7 +1211,7 @@ static int zd1201_get_scan(struct net_device *dev, 
static int zd1201_set_essid(struct net_device *dev,

    struct iw_request_info *info, struct iw_point *data, char *essid)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);



	if (data->length > IW_ESSID_MAX_SIZE)

		return -EINVAL;
@@ -1226,7 +1226,7 @@ static int zd1201_set_essid(struct net_device *dev, 
static int zd1201_get_essid(struct net_device *dev,

    struct iw_request_info *info, struct iw_point *data, char *essid)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);



	memcpy(essid, zd->essid, zd->essidlen);

	data->flags = 1;
@@ -1247,7 +1247,7 @@ static int zd1201_get_nick(struct net_device *dev, struct iw_request_info *info, 
static int zd1201_set_rate(struct net_device *dev,

    struct iw_request_info *info, struct iw_param *rrq, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short rate;

	int err;
@@ -1280,7 +1280,7 @@ static int zd1201_set_rate(struct net_device *dev, 
static int zd1201_get_rate(struct net_device *dev,

    struct iw_request_info *info, struct iw_param *rrq, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short rate;

	int err;
@@ -1313,7 +1313,7 @@ static int zd1201_get_rate(struct net_device *dev, 
static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info,

    struct iw_param *rts, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	int err;

	short val = rts->value;
@@ -1333,7 +1333,7 @@ static int zd1201_set_rts(struct net_device *dev, struct iw_request_info *info, 
static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info,

    struct iw_param *rts, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short rtst;

	int err;
@@ -1350,7 +1350,7 @@ static int zd1201_get_rts(struct net_device *dev, struct iw_request_info *info, 
static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info,

    struct iw_param *frag, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	int err;

	short val = frag->value;
@@ -1371,7 +1371,7 @@ static int zd1201_set_frag(struct net_device *dev, struct iw_request_info *info, 
static int zd1201_get_frag(struct net_device *dev, struct iw_request_info *info,

    struct iw_param *frag, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short fragt;

	int err;
@@ -1400,7 +1400,7 @@ static int zd1201_get_retry(struct net_device *dev, 
static int zd1201_set_encode(struct net_device *dev,

    struct iw_request_info *info, struct iw_point *erq, char *key)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short i;

	int err, rid;
@@ -1457,7 +1457,7 @@ static int zd1201_set_encode(struct net_device *dev, 
static int zd1201_get_encode(struct net_device *dev,

    struct iw_request_info *info, struct iw_point *erq, char *key)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short i;

	int err;
@@ -1490,7 +1490,7 @@ static int zd1201_get_encode(struct net_device *dev, 
static int zd1201_set_power(struct net_device *dev, 

    struct iw_request_info *info, struct iw_param *vwrq, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short enabled, duration, level;

	int err;
@@ -1529,7 +1529,7 @@ static int zd1201_set_power(struct net_device *dev, 
static int zd1201_get_power(struct net_device *dev,

    struct iw_request_info *info, struct iw_param *vwrq, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short enabled, level, duration;

	int err;
@@ -1616,7 +1616,7 @@ static const iw_handler zd1201_iw_handler[] = 
static int zd1201_set_hostauth(struct net_device *dev,

    struct iw_request_info *info, struct iw_param *rrq, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);



	if (!zd->ap)

		return -EOPNOTSUPP;
@@ -1627,7 +1627,7 @@ static int zd1201_set_hostauth(struct net_device *dev, 
static int zd1201_get_hostauth(struct net_device *dev,

    struct iw_request_info *info, struct iw_param *rrq, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short hostauth;

	int err;
@@ -1646,7 +1646,7 @@ static int zd1201_get_hostauth(struct net_device *dev, 
static int zd1201_auth_sta(struct net_device *dev,

    struct iw_request_info *info, struct sockaddr *sta, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	unsigned char buffer[10];



	if (!zd->ap)
@@ -1662,7 +1662,7 @@ static int zd1201_auth_sta(struct net_device *dev, 
static int zd1201_set_maxassoc(struct net_device *dev,

    struct iw_request_info *info, struct iw_param *rrq, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	int err;



	if (!zd->ap)
@@ -1677,7 +1677,7 @@ static int zd1201_set_maxassoc(struct net_device *dev, 
static int zd1201_get_maxassoc(struct net_device *dev,

    struct iw_request_info *info, struct iw_param *rrq, char *extra)

{

	struct zd1201 *zd = (struct zd1201 *)dev->priv;

	struct zd1201 *zd = netdev_priv(dev);

	short maxassoc;

	int err;
@@ -1729,6 +1729,7 @@ static int zd1201_probe(struct usb_interface *interface, 
			const struct usb_device_id *id)

{

	struct zd1201 *zd;

	struct net_device *dev;

	struct usb_device *usb;

	int err;

	short porttype;
@@ -1736,9 +1737,12 @@ static int zd1201_probe(struct usb_interface *interface, 


	usb = interface_to_usbdev(interface);



	zd = kzalloc(sizeof(struct zd1201), GFP_KERNEL);

	if (!zd)

	dev = alloc_etherdev(sizeof(*zd));

	if (!dev)

		return -ENOMEM;

	zd = netdev_priv(dev);

	zd->dev = dev;



	zd->ap = ap;

	zd->usb = usb;

	zd->removed = 0;
@@ -1773,34 +1777,29 @@ static int zd1201_probe(struct usb_interface *interface, 
	if (err)

		goto err_start;



	zd->dev = alloc_etherdev(0);

	if (!zd->dev)

		goto err_start;



	zd->dev->priv = zd;

	zd->dev->open = zd1201_net_open;

	zd->dev->stop = zd1201_net_stop;

	zd->dev->get_stats = zd1201_get_stats;

	zd->dev->wireless_handlers =

	dev->open = zd1201_net_open;

	dev->stop = zd1201_net_stop;

	dev->get_stats = zd1201_get_stats;

	dev->wireless_handlers =

	    (struct iw_handler_def *)&zd1201_iw_handlers;

	zd->dev->hard_start_xmit = zd1201_hard_start_xmit;

	zd->dev->watchdog_timeo = ZD1201_TX_TIMEOUT;

	zd->dev->tx_timeout = zd1201_tx_timeout;

	zd->dev->set_multicast_list = zd1201_set_multicast;

	zd->dev->set_mac_address = zd1201_set_mac_address;

	strcpy(zd->dev->name, "wlan%d");

	dev->hard_start_xmit = zd1201_hard_start_xmit;

	dev->watchdog_timeo = ZD1201_TX_TIMEOUT;

	dev->tx_timeout = zd1201_tx_timeout;

	dev->set_multicast_list = zd1201_set_multicast;

	dev->set_mac_address = zd1201_set_mac_address;

	strcpy(dev->name, "wlan%d");



	err = zd1201_getconfig(zd, ZD1201_RID_CNFOWNMACADDR, 

	    zd->dev->dev_addr, zd->dev->addr_len);

	    dev->dev_addr, dev->addr_len);

	if (err)

		goto err_net;

		goto err_start;



	/* Set wildcard essid to match zd->essid */

	*(__le16 *)buf = cpu_to_le16(0);

	err = zd1201_setconfig(zd, ZD1201_RID_CNFDESIREDSSID, buf,

	    IW_ESSID_MAX_SIZE+2, 1);

	if (err)

		goto err_net;

		goto err_start;



	if (zd->ap)

		porttype = ZD1201_PORTTYPE_AP;
@@ -1808,30 +1807,28 @@ static int zd1201_probe(struct usb_interface *interface, 
		porttype = ZD1201_PORTTYPE_BSS;

	err = zd1201_setconfig16(zd, ZD1201_RID_CNFPORTTYPE, porttype);

	if (err)

		goto err_net;

		goto err_start;



	SET_NETDEV_DEV(zd->dev, &usb->dev);

	SET_NETDEV_DEV(dev, &usb->dev);



	err = register_netdev(zd->dev);

	err = register_netdev(dev);

	if (err)

		goto err_net;

		goto err_start;

	dev_info(&usb->dev, "%s: ZD1201 USB Wireless interface\n",

	    zd->dev->name);

	    dev->name);



	usb_set_intfdata(interface, zd);

	zd1201_enable(zd);	/* zd1201 likes to startup enabled, */

	zd1201_disable(zd);	/* interfering with all the wifis in range */

	return 0;



err_net:

	free_netdev(zd->dev);

err_start:

	/* Leave the device in reset state */

	zd1201_docmd(zd, ZD1201_CMDCODE_INIT, 0, 0, 0);

err_zd:

	usb_free_urb(zd->tx_urb);

	usb_free_urb(zd->rx_urb);

	kfree(zd);

	free_netdev(dev);

	return err;

}