uio: Export definition of struct uio_device

In order to prevent a O(n) search of the filesystem to link up its uio node with its target configuration, TCMU needs to know the minor number that UIO assigned. Expose the definition of this struct so TCMU can access this field. Signed-off-by: Andy Grover <[email protected]> Signed-off-by: Nicholas Bellinger <[email protected]>
ambv · Oct 3, 2014 · f14bb03 · f14bb03
1 parent 20959c4
commit f14bb03
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Showing 2 changed files with 11 additions and 13 deletions.
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
@@ -28,18 +28,6 @@
 
 #define UIO_MAX_DEVICES		(1U << MINORBITS)
 
-struct uio_device {
-	struct module		*owner;
-	struct device		*dev;
-	int			minor;
-	atomic_t		event;
-	struct fasync_struct	*async_queue;
-	wait_queue_head_t	wait;
-	struct uio_info		*info;
-	struct kobject		*map_dir;
-	struct kobject		*portio_dir;
-};
-
 static int uio_major;
 static struct cdev *uio_cdev;
 static DEFINE_IDR(uio_idr);

diff --git a/include/linux/uio_driver.h b/include/linux/uio_driver.h
@@ -63,7 +63,17 @@ struct uio_port {
 
 #define MAX_UIO_PORT_REGIONS	5
 
-struct uio_device;
+struct uio_device {
+        struct module           *owner;
+        struct device           *dev;
+        int                     minor;
+        atomic_t                event;
+        struct fasync_struct    *async_queue;
+        wait_queue_head_t       wait;
+        struct uio_info         *info;
+        struct kobject          *map_dir;
+        struct kobject          *portio_dir;
+};
 
 /**
  * struct uio_info - UIO device capabilities