Staging: hv: Move the definition of the function get_stor_device()

In preparation for further cleaning up storvsc.c move the definition
of the inline function get_stor_device() from storvsc.c to
storvsc_api.h.
Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: NHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: NHank Janssen <hjanssen@microsoft.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/storvsc.c

@@ -56,20 +56,6 @@ static inline void free_stor_device(struct storvsc_device *device)
 	kfree(device);
 }
 
-/* Get the stordevice object iff exists and its refcount > 1 */
-static inline struct storvsc_device *get_stor_device(struct hv_device *device)
-{
-	struct storvsc_device *stor_device;
-
-	stor_device = (struct storvsc_device *)device->ext;
-	if (stor_device && atomic_read(&stor_device->ref_count) > 1)
-		atomic_inc(&stor_device->ref_count);
-	else
-		stor_device = NULL;
-
-	return stor_device;
-}
-
 /* Get the stordevice object iff exists and its refcount > 0 */
 static inline struct storvsc_device *must_get_stor_device(
 					struct hv_device *device)

drivers/staging/hv/storvsc_api.h

@@ -137,6 +137,21 @@ struct storvsc_device {
 	struct storvsc_request_extension reset_request;
 };
 
+
+/* Get the stordevice object iff exists and its refcount > 1 */
+static inline struct storvsc_device *get_stor_device(struct hv_device *device)
+{
+	struct storvsc_device *stor_device;
+
+	stor_device = (struct storvsc_device *)device->ext;
+	if (stor_device && atomic_read(&stor_device->ref_count) > 1)
+		atomic_inc(&stor_device->ref_count);
+	else
+		stor_device = NULL;
+
+	return stor_device;
+}
+
 /* Interface */
 int stor_vsc_on_host_reset(struct hv_device *device);