o wan/cycx: fix module refcounting, removing MOD_{INC,DEC}_USE_COUNT

drivers/net/wan/cycx_main.c

@@ -335,30 +335,6 @@ static irqreturn_t cycx_isr (int irq, void *dev_id, struct pt_regs *regs)
 out:	return IRQ_NONE;
 }
 
-/*
- * This routine is called by the protocol-specific modules when network
- * interface is being open.  The only reason we need this, is because we
- * have to call MOD_INC_USE_COUNT, but cannot include 'module.h' where it's
- * defined more than once into the same kernel module.
- */
-void cyclomx_mod_inc_use_count(struct cycx_device *card)
-{
-	++card->open_cnt;
-	MOD_INC_USE_COUNT;
-}
-
-/*
- * This routine is called by the protocol-specific modules when network
- * interface is being closed.  The only reason we need this, is because we
- * have to call MOD_DEC_USE_COUNT, but cannot include 'module.h' where it's
- * defined more than once into the same kernel module.
- */
-void cyclomx_mod_dec_use_count(struct cycx_device *card)
-{
-	--card->open_cnt;
-	MOD_DEC_USE_COUNT;
-}
-
 /* Set WAN device state.  */
 void cyclomx_set_state(struct cycx_device *card, int state)
 {

drivers/net/wan/cycx_x25.c

@@ -79,14 +79,17 @@
 #define CYCLOMX_X25_DEBUG 1
 
 #include <linux/version.h>
-#include <linux/kernel.h>	/* printk(), and other useful stuff */
-#include <linux/stddef.h>	/* offsetof(), etc. */
 #include <linux/errno.h>	/* return codes */
+#include <linux/if_arp.h>       /* ARPHRD_HWX25 */
+#include <linux/kernel.h>	/* printk(), and other useful stuff */
+#include <linux/module.h>	/* SET_MODULE_OWNER */
 #include <linux/string.h>	/* inline memset(), etc. */
-#include <linux/slab.h>	/* kmalloc(), kfree() */
+#include <linux/slab.h>		/* kmalloc(), kfree() */
+#include <linux/stddef.h>	/* offsetof(), etc. */
 #include <linux/wanrouter.h>	/* WAN router definitions */
+
 #include <asm/byteorder.h>	/* htons(), etc. */
-#include <linux/if_arp.h>       /* ARPHRD_HWX25 */
+
 #include <linux/cyclomx.h>	/* Cyclom 2X common user API definitions */
 #include <linux/cycx_x25.h>	/* X.25 firmware API definitions */
 
@@ -458,7 +461,7 @@ static int del_if(struct wan_device *wandev, struct net_device *dev)
  * This routine is called only once for each interface, during Linux network
  * interface registration.  Returning anything but zero will fail interface
  * registration. */
-static int if_init (struct net_device *dev)
+static int if_init(struct net_device *dev)
 {
 	x25_channel_t *chan = dev->priv;
 	struct cycx_device *card = chan->card;
@@ -491,6 +494,7 @@ static int if_init (struct net_device *dev)
 
         /* Set transmit buffer queue length */
         dev->tx_queue_len = 10;
+	SET_MODULE_OWNER(dev);
 
 	/* Initialize socket buffers */
 	set_chan_state(dev, WAN_DISCONNECTED);
@@ -503,35 +507,27 @@ static int if_init (struct net_device *dev)
  * o if link is disconnected then initiate connection
  *
  * Return 0 if O.k. or errno.  */
-static int if_open (struct net_device *dev)
+static int if_open(struct net_device *dev)
 {
-	x25_channel_t *chan = dev->priv;
-	struct cycx_device *card = chan->card;
-
 	if (netif_running(dev))
 		return -EBUSY; /* only one open is allowed */ 
 
 	netif_start_queue(dev);
-	cyclomx_mod_inc_use_count(card);
-
 	return 0;
 }
 
 /* Close network interface.
  * o reset flags.
  * o if there's no more open channels then disconnect physical link. */
-static int if_close (struct net_device *dev)
+static int if_close(struct net_device *dev)
 {
 	x25_channel_t *chan = dev->priv;
-	struct cycx_device *card = chan->card;
 
 	netif_stop_queue(dev);
 	
 	if (chan->state == WAN_CONNECTED || chan->state == WAN_CONNECTING)
 		chan_disconnect(dev);
 		
-	cyclomx_mod_dec_use_count(card);
-
 	return 0;
 }
 

include/linux/cyclomx.h

+#ifndef	_CYCLOMX_H
+#define	_CYCLOMX_H
 /*
 * cyclomx.h	Cyclom 2X WAN Link Driver.
 *		User-level API definitions.
@@ -21,8 +23,6 @@
 * 1998/12/27	acme		cleanup: PACKED not needed
 * 1998/08/08	acme		Version 0.0.1
 */
-#ifndef	_CYCLOMX_H
-#define	_CYCLOMX_H
 
 #include <linux/config.h>
 #include <linux/wanrouter.h>
@@ -47,7 +47,6 @@ struct cycx_device {
 	char devname[WAN_DRVNAME_SZ+1];	/* card name */
 	cycxhw_t hw;			/* hardware configuration */
 	struct wan_device wandev;	/* WAN device data space */
-	u32 open_cnt;			/* number of open interfaces */
 	u32 state_tick;			/* link state timestamp */
 	spinlock_t lock;
 	char in_isr;			/* interrupt-in-service flag */
@@ -72,8 +71,6 @@ struct cycx_device {
 };
 
 /* Public Functions */
-void cyclomx_mod_inc_use_count(struct cycx_device *card);
-void cyclomx_mod_dec_use_count(struct cycx_device *card);
 void cyclomx_set_state(struct cycx_device *card, int state);
 
 #ifdef CONFIG_CYCLOMX_X25