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[v3,11/14] vfio/mdev: Make to_mdev_device() into a static inline

Message ID 11-v3-225de1400dfc+4e074-vfio1_jgg@nvidia.com (mailing list archive)
State New, archived
Headers show
Series Embed struct vfio_device in all sub-structures | expand

Commit Message

Jason Gunthorpe March 23, 2021, 4:15 p.m. UTC 
The macro wrongly uses 'dev' as both the macro argument and the member
name, which means it fails compilation if any caller uses a word other
than 'dev' as the single argument. Fix this defect by making it into
proper static inline, which is more clear and typesafe anyhow.

Fixes: 99e3123e3d72 ("vfio-mdev: Make mdev_device private and abstract interfaces")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
---
 drivers/vfio/mdev/mdev_private.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/vfio/mdev/mdev_private.h b/drivers/vfio/mdev/mdev_private.h
index 7d922950caaf3c..74c2e541146999 100644
--- a/drivers/vfio/mdev/mdev_private.h
+++ b/drivers/vfio/mdev/mdev_private.h
@@ -35,7 +35,10 @@  struct mdev_device {
 	bool active;
 };
 
-#define to_mdev_device(dev)	container_of(dev, struct mdev_device, dev)
+static inline struct mdev_device *to_mdev_device(struct device *dev)
+{
+	return container_of(dev, struct mdev_device, dev);
+}
 #define dev_is_mdev(d)		((d)->bus == &mdev_bus_type)
 
 struct mdev_type {