[PATCH] pcmcia: make config_t independent, add reference counting

Handle config_t structs independent of struct pcmcia_socket, and add
reference counting for them.

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

drivers/pcmcia/cs_internal.h

@@ -16,6 +16,7 @@
 #define _LINUX_CS_INTERNAL_H
 
 #include <linux/config.h>
+#include <linux/kref.h>
 
 /* Flags in client state */
 #define CLIENT_CONFIG_LOCKED	0x0001
@@ -40,6 +41,7 @@ typedef struct region_t {
 
 /* Each card function gets one of these guys */
 typedef struct config_t {
+	struct kref	ref;
     u_int		state;
     u_int		Attributes;
     u_int		IntType;