diff --git a/server/console.c b/server/console.c
index 3360f680448..9c7fbaa003d 100644
--- a/server/console.c
+++ b/server/console.c
@@ -99,7 +99,7 @@ static const struct object_ops console_ops =
 
 static enum server_fd_type console_get_fd_type( struct fd *fd );
 static void console_get_file_info( struct fd *fd, obj_handle_t handle, unsigned int info_class );
-static int console_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class );
+static void console_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class );
 static int console_read( struct fd *fd, struct async *async, file_pos_t pos );
 static int console_flush( struct fd *fd, struct async *async );
 static int console_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
@@ -480,7 +480,7 @@ static void console_get_file_info( struct fd *fd, obj_handle_t handle, unsigned
     set_error( STATUS_INVALID_DEVICE_REQUEST );
 }
 
-static int console_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class )
+static void console_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class )
 {
     switch (info_class)
     {
@@ -500,7 +500,6 @@ static int console_get_volume_info( struct fd *fd, struct async *async, unsigned
     default:
         set_error( STATUS_NOT_IMPLEMENTED );
     }
-    return 0;
 }
 
 static struct object *create_console(void)
diff --git a/server/device.c b/server/device.c
index 8892651d048..e4a5c2f9670 100644
--- a/server/device.c
+++ b/server/device.c
@@ -206,7 +206,7 @@ static int device_file_write( struct fd *fd, struct async *async, file_pos_t pos
 static int device_file_flush( struct fd *fd, struct async *async );
 static int device_file_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 static void device_file_reselect_async( struct fd *fd, struct async_queue *queue );
-static int device_file_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class );
+static void device_file_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class );
 
 static const struct object_ops device_file_ops =
 {
@@ -614,7 +614,7 @@ static enum server_fd_type device_file_get_fd_type( struct fd *fd )
     return FD_TYPE_DEVICE;
 }
 
-static int device_file_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class )
+static void device_file_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class )
 {
     struct device_file *file = get_fd_user( fd );
     irp_params_t params;
@@ -622,7 +622,7 @@ static int device_file_get_volume_info( struct fd *fd, struct async *async, unsi
     memset( &params, 0, sizeof(params) );
     params.volume.type = IRP_CALL_VOLUME;
     params.volume.info_class = info_class;
-    return queue_irp( file, &params, async );
+    queue_irp( file, &params, async );
 }
 
 static int device_file_read( struct fd *fd, struct async *async, file_pos_t pos )
diff --git a/server/fd.c b/server/fd.c
index e4ef29806f2..93359ea03a5 100644
--- a/server/fd.c
+++ b/server/fd.c
@@ -2369,10 +2369,9 @@ void default_fd_get_file_info( struct fd *fd, obj_handle_t handle, unsigned int
 }
 
 /* default get_volume_info() routine */
-int no_fd_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class )
+void no_fd_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class )
 {
     set_error( STATUS_OBJECT_TYPE_MISMATCH );
-    return 0;
 }
 
 /* default ioctl() routine */
diff --git a/server/file.h b/server/file.h
index 592ee6b4e6b..6b949537084 100644
--- a/server/file.h
+++ b/server/file.h
@@ -65,7 +65,7 @@ struct fd_ops
     /* query file info */
     void (*get_file_info)( struct fd *, obj_handle_t, unsigned int );
     /* query volume info */
-    int (*get_volume_info)( struct fd *, struct async *, unsigned int );
+    void (*get_volume_info)( struct fd *, struct async *, unsigned int );
     /* perform an ioctl on the file */
     int (*ioctl)(struct fd *fd, ioctl_code_t code, struct async *async );
     /* queue an async operation */
@@ -114,7 +114,7 @@ extern int no_fd_write( struct fd *fd, struct async *async, file_pos_t pos );
 extern int no_fd_flush( struct fd *fd, struct async *async );
 extern void no_fd_get_file_info( struct fd *fd, obj_handle_t handle, unsigned int info_class );
 extern void default_fd_get_file_info( struct fd *fd, obj_handle_t handle, unsigned int info_class );
-extern int no_fd_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class );
+extern void no_fd_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class );
 extern int no_fd_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 extern int default_fd_ioctl( struct fd *fd, ioctl_code_t code, struct async *async );
 extern void no_fd_queue_async( struct fd *fd, struct async *async, int type, int count );
diff --git a/server/named_pipe.c b/server/named_pipe.c
index 20407badc4c..72a61253a54 100644
--- a/server/named_pipe.c
+++ b/server/named_pipe.c
@@ -146,7 +146,7 @@ static WCHAR *pipe_end_get_full_name( struct object *obj, data_size_t *len );
 static int pipe_end_read( struct fd *fd, struct async *async, file_pos_t pos );
 static int pipe_end_write( struct fd *fd, struct async *async_data, file_pos_t pos );
 static int pipe_end_flush( struct fd *fd, struct async *async );
-static int pipe_end_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class );
+static void pipe_end_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class );
 static void pipe_end_reselect_async( struct fd *fd, struct async_queue *queue );
 static void pipe_end_get_file_info( struct fd *fd, obj_handle_t handle, unsigned int info_class );
 
@@ -740,7 +740,7 @@ static WCHAR *pipe_end_get_full_name( struct object *obj, data_size_t *len )
     return pipe_end->pipe->obj.ops->get_full_name( &pipe_end->pipe->obj, len );
 }
 
-static int pipe_end_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class )
+static void pipe_end_get_volume_info( struct fd *fd, struct async *async, unsigned int info_class )
 {
     switch (info_class)
     {
@@ -760,7 +760,6 @@ static int pipe_end_get_volume_info( struct fd *fd, struct async *async, unsigne
     default:
         set_error( STATUS_NOT_IMPLEMENTED );
     }
-    return 0;
 }
 
 static void message_queue_read( struct pipe_end *pipe_end, struct async *async )