[PATCH] pcmcia: remove dev_list from drivers

The linked list of devices managed by each PCMCIA driver is, in very most
cases, unused. Therefore, remove it from many drivers.

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

10 files changed, 17 insertions, 155 deletions

diff --git a/drivers/net/pcmcia/3c574_cs.c b/drivers/net/pcmcia/3c574_cs.c
index 60a3bc2b8fc4..8fcb63698ef1 100644
--- a/drivers/net/pcmcia/3c574_cs.c
+++ b/drivers/net/pcmcia/3c574_cs.c
@@ -255,8 +255,6 @@ static dev_info_t dev_info = "3c574_cs";
 static dev_link_t *tc574_attach(void);
 static void tc574_detach(struct pcmcia_device *p_dev);
 
-static dev_link_t *dev_list;
-
 /*
         tc574_attach() creates an "instance" of the driver, allocating
         local data structures for one device.  The device is registered
@@ -308,8 +306,7 @@ static dev_link_t *tc574_attach(void)
 #endif
 
         /* Register with Card Services */
-        link->next = dev_list;
-        dev_list = link;
+        link->next = NULL;
         client_reg.dev_info = &dev_info;
         client_reg.Version = 0x0210;
         client_reg.event_callback_args.client_data = link;
@@ -336,24 +333,15 @@ static void tc574_detach(struct pcmcia_device *p_dev)
 {
         dev_link_t *link = dev_to_instance(p_dev);
         struct net_device *dev = link->priv;
-        dev_link_t **linkp;
 
         DEBUG(0, "3c574_detach(0x%p)\n", link);
 
-        /* Locate device structure */
-        for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
-                if (*linkp == link) break;
-        if (*linkp == NULL)
-                return;
-
         if (link->dev)
                 unregister_netdev(dev);
 
         if (link->state & DEV_CONFIG)
                 tc574_release(link);
 
-        /* Unlink device structure, free bits */
-        *linkp = link->next;
         free_netdev(dev);
 } /* tc574_detach */
 
@@ -1310,7 +1298,6 @@ static int __init init_tc574(void)
 static void __exit exit_tc574(void)
 {
         pcmcia_unregister_driver(&tc574_driver);
-        BUG_ON(dev_list != NULL);
 }
 
 module_init(init_tc574);
diff --git a/drivers/net/pcmcia/3c589_cs.c b/drivers/net/pcmcia/3c589_cs.c
index 09b96c76216e..3516c02b9c89 100644
--- a/drivers/net/pcmcia/3c589_cs.c
+++ b/drivers/net/pcmcia/3c589_cs.c
@@ -166,8 +166,6 @@ static dev_info_t dev_info = "3c589_cs";
 static dev_link_t *tc589_attach(void);
 static void tc589_detach(struct pcmcia_device *p_dev);
 
-static dev_link_t *dev_list;
-
 /*======================================================================
 
     tc589_attach() creates an "instance" of the driver, allocating
@@ -222,8 +220,7 @@ static dev_link_t *tc589_attach(void)
     SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
 
     /* Register with Card Services */
-    link->next = dev_list;
-    dev_list = link;
+    link->next = NULL;
     client_reg.dev_info = &dev_info;
     client_reg.Version = 0x0210;
     client_reg.event_callback_args.client_data = link;
@@ -250,15 +247,8 @@ static void tc589_detach(struct pcmcia_device *p_dev)
 {
     dev_link_t *link = dev_to_instance(p_dev);
     struct net_device *dev = link->priv;
-    dev_link_t **linkp;
-    
+
     DEBUG(0, "3c589_detach(0x%p)\n", link);
-    
-    /* Locate device structure */
-    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
-        if (*linkp == link) break;
-    if (*linkp == NULL)
-        return;
 
     if (link->dev)
         unregister_netdev(dev);
@@ -266,8 +256,6 @@ static void tc589_detach(struct pcmcia_device *p_dev)
     if (link->state & DEV_CONFIG)
         tc589_release(link);
 
-    /* Unlink device structure, free bits */
-    *linkp = link->next;
     free_netdev(dev);
 } /* tc589_detach */
 
@@ -1085,7 +1073,6 @@ static int __init init_tc589(void)
 static void __exit exit_tc589(void)
 {
         pcmcia_unregister_driver(&tc589_driver);
-        BUG_ON(dev_list != NULL);
 }
 
 module_init(init_tc589);
diff --git a/drivers/net/pcmcia/axnet_cs.c b/drivers/net/pcmcia/axnet_cs.c
index 11f701a8ff02..3d36207d3332 100644
--- a/drivers/net/pcmcia/axnet_cs.c
+++ b/drivers/net/pcmcia/axnet_cs.c
@@ -111,7 +111,6 @@ static dev_link_t *axnet_attach(void);
 static void axnet_detach(struct pcmcia_device *p_dev);
 
 static dev_info_t dev_info = "axnet_cs";
-static dev_link_t *dev_list;
 
 static void axdev_setup(struct net_device *dev);
 static void AX88190_init(struct net_device *dev, int startp);
@@ -177,8 +176,7 @@ static dev_link_t *axnet_attach(void)
     SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
 
     /* Register with Card Services */
-    link->next = dev_list;
-    dev_list = link;
+    link->next = NULL;
     client_reg.dev_info = &dev_info;
     client_reg.Version = 0x0210;
     client_reg.event_callback_args.client_data = link;
@@ -205,24 +203,15 @@ static void axnet_detach(struct pcmcia_device *p_dev)
 {
     dev_link_t *link = dev_to_instance(p_dev);
     struct net_device *dev = link->priv;
-    dev_link_t **linkp;
 
     DEBUG(0, "axnet_detach(0x%p)\n", link);
 
-    /* Locate device structure */
-    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
-        if (*linkp == link) break;
-    if (*linkp == NULL)
-        return;
-
     if (link->dev)
         unregister_netdev(dev);
 
     if (link->state & DEV_CONFIG)
         axnet_release(link);
 
-    /* Unlink device structure, free bits */
-    *linkp = link->next;
     free_netdev(dev);
 } /* axnet_detach */
 
@@ -896,7 +885,6 @@ static int __init init_axnet_cs(void)
 static void __exit exit_axnet_cs(void)
 {
         pcmcia_unregister_driver(&axnet_cs_driver);
-        BUG_ON(dev_list != NULL);
 }
 
 module_init(init_axnet_cs);
diff --git a/drivers/net/pcmcia/com20020_cs.c b/drivers/net/pcmcia/com20020_cs.c
index 6970888cba10..d48dbd3e153a 100644
--- a/drivers/net/pcmcia/com20020_cs.c
+++ b/drivers/net/pcmcia/com20020_cs.c
@@ -128,8 +128,6 @@ static dev_info_t dev_info = "com20020_cs";
 static dev_link_t *com20020_attach(void);
 static void com20020_detach(struct pcmcia_device *p_dev);
 
-static dev_link_t *dev_list;
-
 /*====================================================================*/
 
 typedef struct com20020_dev_t {
@@ -196,8 +194,7 @@ static dev_link_t *com20020_attach(void)
     link->priv = info;
 
     /* Register with Card Services */
-    link->next = dev_list;
-    dev_list = link;
+    link->next = NULL;
     client_reg.dev_info = &dev_info;
     client_reg.Version = 0x0210;
     client_reg.event_callback_args.client_data = link;
@@ -230,26 +227,17 @@ static void com20020_detach(struct pcmcia_device *p_dev)
 {
     dev_link_t *link = dev_to_instance(p_dev);
     struct com20020_dev_t *info = link->priv;
-    dev_link_t **linkp;
-    struct net_device *dev; 
-    
+    struct net_device *dev = info->dev;
+
     DEBUG(1,"detach...\n");
 
     DEBUG(0, "com20020_detach(0x%p)\n", link);
 
-    /* Locate device structure */
-    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
-        if (*linkp == link) break;
-    if (*linkp == NULL)
-        return;
-
-    dev = info->dev;
-
     if (link->dev) {
         DEBUG(1,"unregister...\n");
 
         unregister_netdev(dev);
-            
+
         /*
          * this is necessary because we register our IRQ separately
          * from card services.
@@ -263,7 +251,6 @@ static void com20020_detach(struct pcmcia_device *p_dev)
 
     /* Unlink device structure, free bits */
     DEBUG(1,"unlinking...\n");
-    *linkp = link->next;
     if (link->priv)
     {
         dev = info->dev;
@@ -507,7 +494,6 @@ static int __init init_com20020_cs(void)
 static void __exit exit_com20020_cs(void)
 {
         pcmcia_unregister_driver(&com20020_cs_driver);
-        BUG_ON(dev_list != NULL);
 }
 
 module_init(init_com20020_cs);
diff --git a/drivers/net/pcmcia/fmvj18x_cs.c b/drivers/net/pcmcia/fmvj18x_cs.c
index 560d4ee22803..dad6393052ff 100644
--- a/drivers/net/pcmcia/fmvj18x_cs.c
+++ b/drivers/net/pcmcia/fmvj18x_cs.c
@@ -109,7 +109,6 @@ static void fjn_tx_timeout(struct net_device *dev);
 static struct ethtool_ops netdev_ethtool_ops;
 
 static dev_info_t dev_info = "fmvj18x_cs";
-static dev_link_t *dev_list;
 
 /*
     card type
@@ -283,8 +282,7 @@ static dev_link_t *fmvj18x_attach(void)
     SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
     
     /* Register with Card Services */
-    link->next = dev_list;
-    dev_list = link;
+    link->next = NULL;
     client_reg.dev_info = &dev_info;
     client_reg.Version = 0x0210;
     client_reg.event_callback_args.client_data = link;
@@ -304,15 +302,8 @@ static void fmvj18x_detach(struct pcmcia_device *p_dev)
 {
     dev_link_t *link = dev_to_instance(p_dev);
     struct net_device *dev = link->priv;
-    dev_link_t **linkp;
-    
+
     DEBUG(0, "fmvj18x_detach(0x%p)\n", link);
-    
-    /* Locate device structure */
-    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
-        if (*linkp == link) break;
-    if (*linkp == NULL)
-        return;
 
     if (link->dev)
         unregister_netdev(dev);
@@ -320,8 +311,6 @@ static void fmvj18x_detach(struct pcmcia_device *p_dev)
     if (link->state & DEV_CONFIG)
         fmvj18x_release(link);
 
-    /* Unlink device structure, free pieces */
-    *linkp = link->next;
     free_netdev(dev);
 } /* fmvj18x_detach */
 
@@ -807,7 +796,6 @@ static int __init init_fmvj18x_cs(void)
 static void __exit exit_fmvj18x_cs(void)
 {
         pcmcia_unregister_driver(&fmvj18x_cs_driver);
-        BUG_ON(dev_list != NULL);
 }
 
 module_init(init_fmvj18x_cs);
diff --git a/drivers/net/pcmcia/ibmtr_cs.c b/drivers/net/pcmcia/ibmtr_cs.c
index 961294983354..90da35d1f4a5 100644
--- a/drivers/net/pcmcia/ibmtr_cs.c
+++ b/drivers/net/pcmcia/ibmtr_cs.c
@@ -116,8 +116,6 @@ static dev_info_t dev_info = "ibmtr_cs";
 static dev_link_t *ibmtr_attach(void);
 static void ibmtr_detach(struct pcmcia_device *p_dev);
 
-static dev_link_t *dev_list;
-
 /*====================================================================*/
 
 typedef struct ibmtr_dev_t {
@@ -186,8 +184,7 @@ static dev_link_t *ibmtr_attach(void)
     SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
 
     /* Register with Card Services */
-    link->next = dev_list;
-    dev_list = link;
+    link->next = NULL;
     client_reg.dev_info = &dev_info;
     client_reg.Version = 0x0210;
     client_reg.event_callback_args.client_data = link;
@@ -219,19 +216,10 @@ static void ibmtr_detach(struct pcmcia_device *p_dev)
 {
     dev_link_t *link = dev_to_instance(p_dev);
     struct ibmtr_dev_t *info = link->priv;
-    dev_link_t **linkp;
-    struct net_device *dev;
+    struct net_device *dev = info->dev;
 
     DEBUG(0, "ibmtr_detach(0x%p)\n", link);
 
-    /* Locate device structure */
-    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
-        if (*linkp == link) break;
-    if (*linkp == NULL)
-        return;
-
-    dev = info->dev;
-
     if (link->dev)
         unregister_netdev(dev);
 
@@ -242,10 +230,8 @@ static void ibmtr_detach(struct pcmcia_device *p_dev)
     if (link->state & DEV_CONFIG)
         ibmtr_release(link);
 
-    /* Unlink device structure, free bits */
-    *linkp = link->next;
     free_netdev(dev);
-    kfree(info); 
+    kfree(info);
 } /* ibmtr_detach */
 
 /*======================================================================
@@ -530,7 +516,6 @@ static int __init init_ibmtr_cs(void)
 static void __exit exit_ibmtr_cs(void)
 {
         pcmcia_unregister_driver(&ibmtr_cs_driver);
-        BUG_ON(dev_list != NULL);
 }
 
 module_init(init_ibmtr_cs);
diff --git a/drivers/net/pcmcia/nmclan_cs.c b/drivers/net/pcmcia/nmclan_cs.c
index 011ceb090320..0c9cb9f49a81 100644
--- a/drivers/net/pcmcia/nmclan_cs.c
+++ b/drivers/net/pcmcia/nmclan_cs.c
@@ -389,7 +389,6 @@ DRV_NAME " " DRV_VERSION " (Roger C. Pao)";
 #endif
 
 static dev_info_t dev_info="nmclan_cs";
-static dev_link_t *dev_list;
 
 static char *if_names[]={
     "Auto", "10baseT", "BNC",
@@ -498,8 +497,7 @@ static dev_link_t *nmclan_attach(void)
 #endif
 
     /* Register with Card Services */
-    link->next = dev_list;
-    dev_list = link;
+    link->next = NULL;
     client_reg.dev_info = &dev_info;
     client_reg.Version = 0x0210;
     client_reg.event_callback_args.client_data = link;
@@ -525,24 +523,15 @@ static void nmclan_detach(struct pcmcia_device *p_dev)
 {
     dev_link_t *link = dev_to_instance(p_dev);
     struct net_device *dev = link->priv;
-    dev_link_t **linkp;
 
     DEBUG(0, "nmclan_detach(0x%p)\n", link);
 
-    /* Locate device structure */
-    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
-        if (*linkp == link) break;
-    if (*linkp == NULL)
-        return;
-
     if (link->dev)
         unregister_netdev(dev);
 
     if (link->state & DEV_CONFIG)
         nmclan_release(link);
 
-    /* Unlink device structure, free bits */
-    *linkp = link->next;
     free_netdev(dev);
 } /* nmclan_detach */
 
@@ -1700,7 +1689,6 @@ static int __init init_nmclan_cs(void)
 static void __exit exit_nmclan_cs(void)
 {
         pcmcia_unregister_driver(&nmclan_cs_driver);
-        BUG_ON(dev_list != NULL);
 }
 
 module_init(init_nmclan_cs);
diff --git a/drivers/net/pcmcia/pcnet_cs.c b/drivers/net/pcmcia/pcnet_cs.c
index fb3e411d6daf..b35c951fc6fa 100644
--- a/drivers/net/pcmcia/pcnet_cs.c
+++ b/drivers/net/pcmcia/pcnet_cs.c
@@ -124,7 +124,6 @@ static dev_link_t *pcnet_attach(void);
 static void pcnet_detach(struct pcmcia_device *p_dev);
 
 static dev_info_t dev_info = "pcnet_cs";
-static dev_link_t *dev_list;
 
 /*====================================================================*/
 
@@ -272,8 +271,7 @@ static dev_link_t *pcnet_attach(void)
     dev->set_config = &set_config;
 
     /* Register with Card Services */
-    link->next = dev_list;
-    dev_list = link;
+    link->next = NULL;
     client_reg.dev_info = &dev_info;
     client_reg.Version = 0x0210;
     client_reg.event_callback_args.client_data = link;
@@ -300,24 +298,15 @@ static void pcnet_detach(struct pcmcia_device *p_dev)
 {
         dev_link_t *link = dev_to_instance(p_dev);
         struct net_device *dev = link->priv;
-        dev_link_t **linkp;
 
         DEBUG(0, "pcnet_detach(0x%p)\n", link);
 
-        /* Locate device structure */
-        for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
-                if (*linkp == link) break;
-        if (*linkp == NULL)
-                return;
-
         if (link->dev)
                 unregister_netdev(dev);
 
         if (link->state & DEV_CONFIG)
                 pcnet_release(link);
 
-        /* Unlink device structure, free bits */
-        *linkp = link->next;
         free_netdev(dev);
 } /* pcnet_detach */
 
@@ -1864,7 +1853,6 @@ static void __exit exit_pcnet_cs(void)
 {
     DEBUG(0, "pcnet_cs: unloading\n");
     pcmcia_unregister_driver(&pcnet_driver);
-    BUG_ON(dev_list != NULL);
 }
 
 module_init(init_pcnet_cs);
diff --git a/drivers/net/pcmcia/smc91c92_cs.c b/drivers/net/pcmcia/smc91c92_cs.c
index 6cb5198d6094..9eb5cecfb2f5 100644
--- a/drivers/net/pcmcia/smc91c92_cs.c
+++ b/drivers/net/pcmcia/smc91c92_cs.c
@@ -104,8 +104,6 @@ static const char *version =
 
 static dev_info_t dev_info = "smc91c92_cs";
 
-static dev_link_t *dev_list;
-
 struct smc_private {
     dev_link_t                  link;
     spinlock_t                  lock;
@@ -367,8 +365,7 @@ static dev_link_t *smc91c92_attach(void)
     smc->mii_if.reg_num_mask = 0x1f;
 
     /* Register with Card Services */
-    link->next = dev_list;
-    dev_list = link;
+    link->next = NULL;
     client_reg.dev_info = &dev_info;
     client_reg.Version = 0x0210;
     client_reg.event_callback_args.client_data = link;
@@ -395,24 +392,15 @@ static void smc91c92_detach(struct pcmcia_device *p_dev)
 {
     dev_link_t *link = dev_to_instance(p_dev);
     struct net_device *dev = link->priv;
-    dev_link_t **linkp;
 
     DEBUG(0, "smc91c92_detach(0x%p)\n", link);
 
-    /* Locate device structure */
-    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
-        if (*linkp == link) break;
-    if (*linkp == NULL)
-        return;
-
     if (link->dev)
         unregister_netdev(dev);
 
     if (link->state & DEV_CONFIG)
         smc91c92_release(link);
 
-    /* Unlink device structure, free bits */
-    *linkp = link->next;
     free_netdev(dev);
 } /* smc91c92_detach */
 
@@ -2377,7 +2365,6 @@ static int __init init_smc91c92_cs(void)
 static void __exit exit_smc91c92_cs(void)
 {
         pcmcia_unregister_driver(&smc91c92_cs_driver);
-        BUG_ON(dev_list != NULL);
 }
 
 module_init(init_smc91c92_cs);
diff --git a/drivers/net/pcmcia/xirc2ps_cs.c b/drivers/net/pcmcia/xirc2ps_cs.c
index 804e56771baf..8c8cc40bbb7d 100644
--- a/drivers/net/pcmcia/xirc2ps_cs.c
+++ b/drivers/net/pcmcia/xirc2ps_cs.c
@@ -331,15 +331,7 @@ static dev_info_t dev_info = "xirc2ps_cs";
  * device numbers are used to derive the corresponding array index.
  */
 
-static dev_link_t *dev_list;
-
 /****************
- * A dev_link_t structure has fields for most things that are needed
- * to keep track of a socket, but there will usually be some device
- * specific information that also needs to be kept track of.  The
- * 'priv' pointer in a dev_link_t structure can be used to point to
- * a device-specific private data structure, like this.
- *
  * A driver needs to provide a dev_node_t structure for each device
  * on a card.  In some cases, there is only one device per card (for
  * example, ethernet cards, modems).  In other cases, there may be
@@ -615,8 +607,7 @@ xirc2ps_attach(void)
 #endif
 
     /* Register with Card Services */
-    link->next = dev_list;
-    dev_list = link;
+    link->next = NULL;
     client_reg.dev_info = &dev_info;
     client_reg.Version = 0x0210;
     client_reg.event_callback_args.client_data = link;
@@ -641,27 +632,15 @@ xirc2ps_detach(struct pcmcia_device *p_dev)
 {
     dev_link_t *link = dev_to_instance(p_dev);
     struct net_device *dev = link->priv;
-    dev_link_t **linkp;
 
     DEBUG(0, "detach(0x%p)\n", link);
 
-    /* Locate device structure */
-    for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
-        if (*linkp == link)
-            break;
-    if (!*linkp) {
-        DEBUG(0, "detach(0x%p): dev_link lost\n", link);
-        return;
-    }
-
     if (link->dev)
         unregister_netdev(dev);
 
     if (link->state & DEV_CONFIG)
         xirc2ps_release(link);
 
-    /* Unlink device structure, free it */
-    *linkp = link->next;
     free_netdev(dev);
 } /* xirc2ps_detach */
 
@@ -2020,7 +1999,6 @@ static void __exit
 exit_xirc2ps_cs(void)
 {
         pcmcia_unregister_driver(&xirc2ps_cs_driver);
-        BUG_ON(dev_list != NULL);
 }
 
 module_init(init_xirc2ps_cs);