pcmcia: clarify alloc_io_space, move it to resource handlers

Clean up the alloc_io_space() function by moving most of it to
the actual resource_ops. This allows for a bit less re-directions.
Future cleanups will follow, and will make up for the code
duplication currently present between rsrc_iodyn and rsrc_nonstatic
(which are hardly ever built at the same time anyway, therefore no
increase in built size).

Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
diff --git a/include/pcmcia/ds.h b/include/pcmcia/ds.h
index b4429f7..c180165 100644
--- a/include/pcmcia/ds.h
+++ b/include/pcmcia/ds.h
@@ -184,9 +184,16 @@
 /* device configuration */
 int pcmcia_request_io(struct pcmcia_device *p_dev, io_req_t *req);
 
-int __must_check __deprecated
-pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev,
+int __must_check
+__pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev,
 				irq_handler_t handler);
+static inline __must_check __deprecated int
+pcmcia_request_exclusive_irq(struct pcmcia_device *p_dev,
+				irq_handler_t handler)
+{
+	return __pcmcia_request_exclusive_irq(p_dev, handler);
+}
+
 int __must_check pcmcia_request_irq(struct pcmcia_device *p_dev,
 				irq_handler_t handler);