summaryrefslogtreecommitdiff
path: root/Documentation/driver-api
diff options
context:
space:
mode:
authorJason Gunthorpe <jgg@nvidia.com>2021-04-06 22:40:27 +0300
committerAlex Williamson <alex.williamson@redhat.com>2021-04-08 00:39:16 +0300
commit91b9969d9c6bb7c02253bbfc536bfd892f636fdc (patch)
treedb6bbb6639ffa0c14f8dae99463064417ea90d56 /Documentation/driver-api
parent2a3d15f270efa50d78d8a32d895e9d5396668f3a (diff)
downloadlinux-91b9969d9c6bb7c02253bbfc536bfd892f636fdc.tar.xz
vfio/mdev: Simplify driver registration
This is only done once, we don't need to generate code to initialize a structure stored in the ELF .data segment. Fill in the three required .driver members directly instead of copying data into them during mdev_register_driver(). Further the to_mdev_driver() function doesn't belong in a public header, just inline it into the two places that need it. Finally, we can now clearly see that 'drv' derived from dev->driver cannot be NULL, firstly because the driver core forbids it, and secondly because NULL won't pass through the container_of(). Remove the dead code. 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: <4-v2-d36939638fc6+d54-vfio2_jgg@nvidia.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Diffstat (limited to 'Documentation/driver-api')
-rw-r--r--Documentation/driver-api/vfio-mediated-device.rst5
1 files changed, 1 insertions, 4 deletions
diff --git a/Documentation/driver-api/vfio-mediated-device.rst b/Documentation/driver-api/vfio-mediated-device.rst
index c43c1dc33333..1779b85f014e 100644
--- a/Documentation/driver-api/vfio-mediated-device.rst
+++ b/Documentation/driver-api/vfio-mediated-device.rst
@@ -98,13 +98,11 @@ structure to represent a mediated device's driver::
/*
* struct mdev_driver [2] - Mediated device's driver
- * @name: driver name
* @probe: called when new device created
* @remove: called when device removed
* @driver: device driver structure
*/
struct mdev_driver {
- const char *name;
int (*probe) (struct mdev_device *dev);
void (*remove) (struct mdev_device *dev);
struct device_driver driver;
@@ -115,8 +113,7 @@ to register and unregister itself with the core driver:
* Register::
- extern int mdev_register_driver(struct mdev_driver *drv,
- struct module *owner);
+ extern int mdev_register_driver(struct mdev_driver *drv);
* Unregister::