[PATCH v5 1/4] vdpa: Add suspend operation

[Eugenio Pérez]

This operation is optional: It it's not implemented, backend feature bit
will not be exposed.

Signed-off-by: Eugenio Pérez <eperezma@xxxxxxxxxx>
---
 include/linux/vdpa.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index 15af802d41c4c..8f4559795bf9f 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -215,6 +215,10 @@ struct vdpa_map_file {
  * @reset:			Reset device
  *				@vdev: vdpa device
  *				Returns integer: success (0) or error (< 0)
+ * @suspend:			Suspend or resume the device (optional)
+ *				@vdev: vdpa device
+ *				@suspend: suspend (true), resume (false)
+ *				Returns integer: success (0) or error (< 0)
  * @get_config_size:		Get the size of the configuration space includes
  *				fields that are conditional on feature bits.
  *				@vdev: vdpa device
@@ -316,6 +320,7 @@ struct vdpa_config_ops {
 	u8 (*get_status)(struct vdpa_device *vdev);
 	void (*set_status)(struct vdpa_device *vdev, u8 status);
 	int (*reset)(struct vdpa_device *vdev);
+	int (*suspend)(struct vdpa_device *vdev, bool suspend);
 	size_t (*get_config_size)(struct vdpa_device *vdev);
 	void (*get_config)(struct vdpa_device *vdev, unsigned int offset,
 			   void *buf, unsigned int len);
-- 
2.31.1