[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>

drivers/telephony/ixj_pcmcia.c

@@ -34,23 +34,19 @@ typedef struct ixj_info_t {
 	struct ixj *port;
 } ixj_info_t;
 
-static dev_link_t *ixj_attach(void);
 static void ixj_detach(struct pcmcia_device *p_dev);
 static void ixj_config(dev_link_t * link);
 static void ixj_cs_release(dev_link_t * link);
-static int ixj_event(event_t event, int priority, event_callback_args_t * args);
-static dev_info_t dev_info = "ixj_cs";
 
-static dev_link_t *ixj_attach(void)
+static int ixj_attach(struct pcmcia_device *p_dev)
 {
-	client_reg_t client_reg;
 	dev_link_t *link;
-	int ret;
+
 	DEBUG(0, "ixj_attach()\n");
 	/* Create new ixj device */
 	link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
 	if (!link)
-		return NULL;
+		return -ENOMEM;
 	memset(link, 0, sizeof(struct dev_link_t));
 	link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
 	link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
@@ -60,21 +56,17 @@ static dev_link_t *ixj_attach(void)
 	link->priv = kmalloc(sizeof(struct ixj_info_t), GFP_KERNEL);
 	if (!link->priv) {
 		kfree(link);
-		return NULL;
+		return -ENOMEM;
 	}
 	memset(link->priv, 0, sizeof(struct ixj_info_t));
-	/* 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 != CS_SUCCESS) {
-		cs_error(link->handle, RegisterClient, ret);
-		ixj_detach(link->handle);
-		return NULL;
-	}
-	return link;
+
+	link->handle = p_dev;
+	p_dev->instance = link;
+
+	link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
+	ixj_config(link);
+
+	return 0;
 }
 
 static void ixj_detach(struct pcmcia_device *p_dev)
@@ -265,19 +257,6 @@ static int ixj_resume(struct pcmcia_device *dev)
 	return 0;
 }
 
-static int ixj_event(event_t event, int priority, event_callback_args_t * args)
-{
-	dev_link_t *link = args->client_data;
-	DEBUG(1, "ixj_event(0x%06x)\n", event);
-	switch (event) {
-	case CS_EVENT_CARD_INSERTION:
-		link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
-		ixj_config(link);
-		break;
-	}
-	return 0;
-}
-
 static struct pcmcia_device_id ixj_ids[] = {
 	PCMCIA_DEVICE_MANF_CARD(0x0257, 0x0600),
 	PCMCIA_DEVICE_NULL
@@ -289,8 +268,7 @@ static struct pcmcia_driver ixj_driver = {
 	.drv		= {
 		.name	= "ixj_cs",
 	},
-	.attach		= ixj_attach,
-	.event		= ixj_event,
+	.probe		= ixj_attach,
 	.remove		= ixj_detach,
 	.id_table	= ixj_ids,
 	.suspend	= ixj_suspend,