[PATCH] pcmcia: unify attach, EVENT_CARD_INSERTION handlers into one probe callback

Unify the EVENT_CARD_INSERTION and "attach" callbacks to one unified
probe() callback. As all in-kernel drivers are changed to this new
callback, there will be no temporary backwards-compatibility. Inside a
probe() function, each driver _must_ set struct pcmcia_device
*p_dev->instance and instance->handle correctly.

With these patches, the basic driver interface for 16-bit PCMCIA drivers
now has the classic four callbacks known also from other buses:

        int (*probe)            (struct pcmcia_device *dev);
        void (*remove)          (struct pcmcia_device *dev);

        int (*suspend)          (struct pcmcia_device *dev);
        int (*resume)           (struct pcmcia_device *dev);

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

1 files changed, 8 insertions, 51 deletions

diff --git a/drivers/net/pcmcia/com20020_cs.c b/drivers/net/pcmcia/com20020_cs.c
index d48dbd3..2827a48 100644
--- a/drivers/net/pcmcia/com20020_cs.c
+++ b/drivers/net/pcmcia/com20020_cs.c
@@ -120,12 +120,7 @@ MODULE_LICENSE("GPL");
 
 static void com20020_config(dev_link_t *link);
 static void com20020_release(dev_link_t *link);
-static int com20020_event(event_t event, int priority,
-                       event_callback_args_t *args);
 
-static dev_info_t dev_info = "com20020_cs";
-
-static dev_link_t *com20020_attach(void);
 static void com20020_detach(struct pcmcia_device *p_dev);
 
 /*====================================================================*/
@@ -143,21 +138,19 @@ typedef struct com20020_dev_t {
 
 ======================================================================*/
 
-static dev_link_t *com20020_attach(void)
+static int com20020_attach(struct pcmcia_device *p_dev)
 {
-    client_reg_t client_reg;
     dev_link_t *link;
     com20020_dev_t *info;
     struct net_device *dev;
-    int ret;
     struct arcnet_local *lp;
-    
+
     DEBUG(0, "com20020_attach()\n");
 
     /* Create new network device */
     link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
     if (!link)
-	return NULL;
+	return -ENOMEM;
 
     info = kmalloc(sizeof(struct com20020_dev_t), GFP_KERNEL);
     if (!info)
@@ -189,29 +182,19 @@ static dev_link_t *com20020_attach(void)
     link->conf.IntType = INT_MEMORY_AND_IO;
     link->conf.Present = PRESENT_OPTION;
 
-
     link->irq.Instance = info->dev = dev;
     link->priv = info;
 
-    /* Register with Card Services */
-    link->next = NULL;
-    client_reg.dev_info = &dev_info;
-    client_reg.Version = 0x0210;
-    client_reg.event_callback_args.client_data = link;
-    ret = pcmcia_register_client(&link->handle, &client_reg);
-    if (ret != 0) {
-        cs_error(link->handle, RegisterClient, ret);
-        com20020_detach(link->handle);
-        return NULL;
-    }
+    link->state |= DEV_PRESENT;
+    com20020_config(link);
 
-    return link;
+    return 0;
 
 fail_alloc_dev:
     kfree(info);
 fail_alloc_info:
     kfree(link);
-    return NULL;
+    return -ENOMEM;
 } /* com20020_attach */
 
 /*======================================================================
@@ -442,31 +425,6 @@ static int com20020_resume(struct pcmcia_device *p_dev)
 	return 0;
 }
 
-/*======================================================================
-
-    The card status event handler.  Mostly, this schedules other
-    stuff to run after an event is received.  A CARD_REMOVAL event
-    also sets some flags to discourage the net drivers from trying
-    to talk to the card any more.
-
-======================================================================*/
-
-static int com20020_event(event_t event, int priority,
-			  event_callback_args_t *args)
-{
-    dev_link_t *link = args->client_data;
-
-    DEBUG(1, "com20020_event(0x%06x)\n", event);
-    
-    switch (event) {
-    case CS_EVENT_CARD_INSERTION:
-        link->state |= DEV_PRESENT;
-	com20020_config(link); 
-	break;
-    }
-    return 0;
-} /* com20020_event */
-
 static struct pcmcia_device_id com20020_ids[] = {
 	PCMCIA_DEVICE_PROD_ID12("Contemporary Control Systems, Inc.", "PCM20 Arcnet Adapter", 0x59991666, 0x95dfffaf),
 	PCMCIA_DEVICE_NULL
@@ -478,8 +436,7 @@ static struct pcmcia_driver com20020_cs_driver = {
 	.drv		= {
 		.name	= "com20020_cs",
 	},
-	.attach		= com20020_attach,
-	.event		= com20020_event,
+	.probe		= com20020_attach,
 	.remove		= com20020_detach,
 	.id_table	= com20020_ids,
 	.suspend	= com20020_suspend,