linux-kernel - [PATCH v2 11/16] virtio: move dev_to_virtio() to use container_of

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230111113018.459199-12-gregkh@linuxfoundation.org>
Date:   Wed, 11 Jan 2023 12:30:13 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        virtualization@...ts.linux-foundation.org
Subject: [PATCH v2 11/16] virtio: move dev_to_virtio() to use container_of_const()

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@...hat.com>
Cc: Jason Wang <jasowang@...hat.com>
Cc: virtualization@...ts.linux-foundation.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 include/linux/virtio.h | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

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);
-- 
2.39.0