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[v2,11/16] virtio: move dev_to_virtio() to use container_of_const()

Message ID 20230111113018.459199-12-gregkh@linuxfoundation.org
State New
Headers
Series driver core: make more things const! |

Commit Message

Greg KH Jan. 11, 2023, 11:30 a.m. UTC 
  The driver core is changing to pass some pointers as const, so move
dev_to_virtio() to use container_of_const() to handle this change.

dev_to_virtio() now properly keeps the const-ness of the pointer passed
into it, while as before it could be lost.

Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: virtualization@lists.linux-foundation.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 include/linux/virtio.h | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index dcab9c7e8784..2b472514c49b 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -127,10 +127,7 @@  struct virtio_device {
 	void *priv;
 };
 
-static inline struct virtio_device *dev_to_virtio(struct device *_dev)
-{
-	return container_of(_dev, struct virtio_device, dev);
-}
+#define dev_to_virtio(_dev)	container_of_const(_dev, struct virtio_device, dev)
 
 void virtio_add_status(struct virtio_device *dev, unsigned int status);
 int register_virtio_device(struct virtio_device *dev);