[PATCH] pcmcia: code moving in ds

Move some code around in ds.c. Avoids forward-declarations, and keeps
related code close to each other.
Signed-off-by: Dominik Brodowski <linux@brodo.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

drivers/pcmcia/ds.c

@@ -117,130 +117,6 @@ static int major_dev = -1;
 
 /* code which was in cs.c before */
 
-/*======================================================================
-
-    Register_client() uses the dev_info_t handle to match the
-    caller with a socket.  The driver must have already been bound
-    to a socket with bind_device() -- in fact, bind_device()
-    allocates the client structure that will be used.
-
-======================================================================*/
-
-int pcmcia_register_client(client_handle_t *handle, client_reg_t *req)
-{
-	client_t *client = NULL;
-	struct pcmcia_socket *s;
-
-	/* Look for unbound client with matching dev_info */
-	down_read(&pcmcia_socket_list_rwsem);
-	list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
-		client = s->clients;
-		while (client != NULL) {
-			if ((strcmp(client->dev_info, (char *)req->dev_info) == 0)
-			    && (client->state & CLIENT_UNBOUND)) break;
-			client = client->next;
-		}
-		if (client != NULL) break;
-	}
-	up_read(&pcmcia_socket_list_rwsem);
-	if (client == NULL)
-		return CS_OUT_OF_RESOURCE;
-
-	/*
-	 * Prevent this racing with a card insertion.
-	 */
-	down(&s->skt_sem);
-	*handle = client;
-	client->state &= ~CLIENT_UNBOUND;
-	client->Socket = s;
-	client->Attributes = req->Attributes;
-	client->EventMask = req->EventMask;
-	client->event_handler = req->event_handler;
-	client->event_callback_args = req->event_callback_args;
-	client->event_callback_args.client_handle = client;
-
-	if (s->state & SOCKET_CARDBUS)
-		client->state |= CLIENT_CARDBUS;
-
-	if ((!(s->state & SOCKET_CARDBUS)) && (s->functions == 0) &&
-	    (client->Function != BIND_FN_ALL)) {
-		cistpl_longlink_mfc_t mfc;
-		if (pccard_read_tuple(s, client->Function, CISTPL_LONGLINK_MFC, &mfc)
-		    == CS_SUCCESS)
-			s->functions = mfc.nfn;
-		else
-			s->functions = 1;
-		s->config = kmalloc(sizeof(config_t) * s->functions,
-				    GFP_KERNEL);
-		if (!s->config)
-			goto out_no_resource;
-		memset(s->config, 0, sizeof(config_t) * s->functions);
-	}
-
-	ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
-	       client, client->dev_info);
-	if (client->EventMask & CS_EVENT_REGISTRATION_COMPLETE)
-		EVENT(client, CS_EVENT_REGISTRATION_COMPLETE, CS_EVENT_PRI_LOW);
-
-	if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) {
-		if (client->EventMask & CS_EVENT_CARD_INSERTION)
-			EVENT(client, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW);
-		else
-			client->PendingEvents |= CS_EVENT_CARD_INSERTION;
-	}
-
-	up(&s->skt_sem);
-	return CS_SUCCESS;
-
- out_no_resource:
-	up(&s->skt_sem);
-	return CS_OUT_OF_RESOURCE;
-} /* register_client */
-EXPORT_SYMBOL(pcmcia_register_client);
-
-int pcmcia_deregister_client(client_handle_t handle)
-{
-	client_t **client;
-	struct pcmcia_socket *s;
-	u_long flags;
-	int i;
-
-	if (CHECK_HANDLE(handle))
-		return CS_BAD_HANDLE;
-
-	s = SOCKET(handle);
-	ds_dbg(1, "deregister_client(%p)\n", handle);
-
-	if (handle->state &
-	    (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
-		return CS_IN_USE;
-	for (i = 0; i < MAX_WIN; i++)
-		if (handle->state & CLIENT_WIN_REQ(i))
-			return CS_IN_USE;
-
-	if ((handle->state & CLIENT_STALE) ||
-	    (handle->Attributes & INFO_MASTER_CLIENT)) {
-		spin_lock_irqsave(&s->lock, flags);
-		client = &s->clients;
-		while ((*client) && ((*client) != handle))
-			client = &(*client)->next;
-		if (*client == NULL) {
-			spin_unlock_irqrestore(&s->lock, flags);
-			return CS_BAD_HANDLE;
-		}
-		*client = handle->next;
-		handle->client_magic = 0;
-		kfree(handle);
-		spin_unlock_irqrestore(&s->lock, flags);
-	} else {
-		handle->state = CLIENT_UNBOUND;
-		handle->event_handler = NULL;
-	}
-
-	return CS_SUCCESS;
-} /* deregister_client */
-EXPORT_SYMBOL(pcmcia_deregister_client);
-
 /* String tables for error messages */
 
 typedef struct lookup_t {
@@ -662,8 +538,9 @@ static int bind_mtd(struct pcmcia_bus_socket *bus_sock, mtd_info_t *mtd_info)
 
 /*======================================================================
 
-    bind_request() and bind_device() are merged by now. Individual
-    descriptions:
+    bind_request() and bind_device() are merged by now. Register_client()
+    is called right at the end of bind_request(), during the driver's
+    ->attach() call. Individual descriptions:
 
     bind_request() connects a socket to a particular client driver.
     It looks up the specified device ID in the list of registered
@@ -675,6 +552,11 @@ static int bind_mtd(struct pcmcia_bus_socket *bus_sock, mtd_info_t *mtd_info)
     a newly inserted card.  An instance of that driver will then be
     eligible to register as a client of this socket.
 
+    Register_client() uses the dev_info_t handle to match the
+    caller with a socket.  The driver must have already been bound
+    to a socket with bind_device() -- in fact, bind_device()
+    allocates the client structure that will be used.
+
 ======================================================================*/
 
 static int bind_request(struct pcmcia_bus_socket *s, bind_info_t *bind_info)
@@ -789,6 +671,79 @@ static int bind_request(struct pcmcia_bus_socket *s, bind_info_t *bind_info)
 	return (ret);
 } /* bind_request */
 
+int pcmcia_register_client(client_handle_t *handle, client_reg_t *req)
+{
+	client_t *client = NULL;
+	struct pcmcia_socket *s;
+
+	/* Look for unbound client with matching dev_info */
+	down_read(&pcmcia_socket_list_rwsem);
+	list_for_each_entry(s, &pcmcia_socket_list, socket_list) {
+		client = s->clients;
+		while (client != NULL) {
+			if ((strcmp(client->dev_info, (char *)req->dev_info) == 0)
+			    && (client->state & CLIENT_UNBOUND)) break;
+			client = client->next;
+		}
+		if (client != NULL) break;
+	}
+	up_read(&pcmcia_socket_list_rwsem);
+	if (client == NULL)
+		return CS_OUT_OF_RESOURCE;
+
+	/*
+	 * Prevent this racing with a card insertion.
+	 */
+	down(&s->skt_sem);
+	*handle = client;
+	client->state &= ~CLIENT_UNBOUND;
+	client->Socket = s;
+	client->Attributes = req->Attributes;
+	client->EventMask = req->EventMask;
+	client->event_handler = req->event_handler;
+	client->event_callback_args = req->event_callback_args;
+	client->event_callback_args.client_handle = client;
+
+	if (s->state & SOCKET_CARDBUS)
+		client->state |= CLIENT_CARDBUS;
+
+	if ((!(s->state & SOCKET_CARDBUS)) && (s->functions == 0) &&
+	    (client->Function != BIND_FN_ALL)) {
+		cistpl_longlink_mfc_t mfc;
+		if (pccard_read_tuple(s, client->Function, CISTPL_LONGLINK_MFC, &mfc)
+		    == CS_SUCCESS)
+			s->functions = mfc.nfn;
+		else
+			s->functions = 1;
+		s->config = kmalloc(sizeof(config_t) * s->functions,
+				    GFP_KERNEL);
+		if (!s->config)
+			goto out_no_resource;
+		memset(s->config, 0, sizeof(config_t) * s->functions);
+	}
+
+	ds_dbg(1, "register_client(): client 0x%p, dev %s\n",
+	       client, client->dev_info);
+	if (client->EventMask & CS_EVENT_REGISTRATION_COMPLETE)
+		EVENT(client, CS_EVENT_REGISTRATION_COMPLETE, CS_EVENT_PRI_LOW);
+
+	if ((s->state & (SOCKET_PRESENT|SOCKET_CARDBUS)) == SOCKET_PRESENT) {
+		if (client->EventMask & CS_EVENT_CARD_INSERTION)
+			EVENT(client, CS_EVENT_CARD_INSERTION, CS_EVENT_PRI_LOW);
+		else
+			client->PendingEvents |= CS_EVENT_CARD_INSERTION;
+	}
+
+	up(&s->skt_sem);
+	return CS_SUCCESS;
+
+ out_no_resource:
+	up(&s->skt_sem);
+	return CS_OUT_OF_RESOURCE;
+} /* register_client */
+EXPORT_SYMBOL(pcmcia_register_client);
+
+
 /*====================================================================*/
 
 extern struct pci_bus *pcmcia_lookup_bus(struct pcmcia_socket *s);
@@ -915,6 +870,50 @@ static int unbind_request(struct pcmcia_bus_socket *s, bind_info_t *bind_info)
 	return 0;
 } /* unbind_request */
 
+int pcmcia_deregister_client(client_handle_t handle)
+{
+	client_t **client;
+	struct pcmcia_socket *s;
+	u_long flags;
+	int i;
+
+	if (CHECK_HANDLE(handle))
+		return CS_BAD_HANDLE;
+
+	s = SOCKET(handle);
+	ds_dbg(1, "deregister_client(%p)\n", handle);
+
+	if (handle->state &
+	    (CLIENT_IRQ_REQ|CLIENT_IO_REQ|CLIENT_CONFIG_LOCKED))
+		return CS_IN_USE;
+	for (i = 0; i < MAX_WIN; i++)
+		if (handle->state & CLIENT_WIN_REQ(i))
+			return CS_IN_USE;
+
+	if ((handle->state & CLIENT_STALE) ||
+	    (handle->Attributes & INFO_MASTER_CLIENT)) {
+		spin_lock_irqsave(&s->lock, flags);
+		client = &s->clients;
+		while ((*client) && ((*client) != handle))
+			client = &(*client)->next;
+		if (*client == NULL) {
+			spin_unlock_irqrestore(&s->lock, flags);
+			return CS_BAD_HANDLE;
+		}
+		*client = handle->next;
+		handle->client_magic = 0;
+		kfree(handle);
+		spin_unlock_irqrestore(&s->lock, flags);
+	} else {
+		handle->state = CLIENT_UNBOUND;
+		handle->event_handler = NULL;
+	}
+
+	return CS_SUCCESS;
+} /* deregister_client */
+EXPORT_SYMBOL(pcmcia_deregister_client);
+
+
 /*======================================================================
 
     The user-mode PC Card device interface