[PATCH 5.10 392/545] vfio/mdev: Make to_mdev_device() into a static inline

Greg Kroah-Hartman
2022-08-19T16:34:46Z

From: Jason Gunthorpe <jgg@nvidia.com>

[ Upstream commit 66873b5fa738ca02b5c075ca4a410b13d88e6e9a ]

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>
Message-Id: <11-v3-225de1400dfc+4e074-vfio1_jgg@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/vfio/mdev/mdev_private.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/vfio/mdev/mdev_private.h b/drivers/vfio/mdev/mdev_private.h
index 7d922950caaf..74c2e5411469 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 {
--
2.35.1