agp: change agp_free_page_array to use kvfree

Change agp_free_page_array to use kvfree function,
remove the duplicated code.

Signed-off-by: Yalin Wang <[e-mail]>
Signed-off-by: Dave Airlie <[e-mail]>

drivers/char/agp/agp.h

···
 /* generic functions for user-populated AGP memory types */
 struct agp_memory *agp_generic_alloc_user(size_t page_count, int type);
 void agp_alloc_page_array(size_t size, struct agp_memory *mem);
-void agp_free_page_array(struct agp_memory *mem);
+static inline void agp_free_page_array(struct agp_memory *mem)
+{
+	kvfree(mem->pages);
+}
 
 
 /* generic routines for agp>=3 */

drivers/char/agp/generic.c

···
 }
 EXPORT_SYMBOL(agp_alloc_page_array);
 
-void agp_free_page_array(struct agp_memory *mem)
-{
-	if (is_vmalloc_addr(mem->pages)) {
-		vfree(mem->pages);
-	} else {
-		kfree(mem->pages);
-	}
-}
-EXPORT_SYMBOL(agp_free_page_array);
-
-
 static struct agp_memory *agp_create_user_memory(unsigned long num_agp_pages)
 {
 	struct agp_memory *new;