From: Jason Gunthorpe <jgg@xxxxxxxxxx> vfio_ccw will need it. Cc: Alex Williamson <alex.williamson@xxxxxxxxxx> Cc: Cornelia Huck <cohuck@xxxxxxxxxx> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> Link: https://lore.kernel.org/r/9-v3-57c1502c62fd+2190-ccw_mdev_jgg@xxxxxxxxxx/ [farman: added Cc: tags] Signed-off-by: Eric Farman <farman@xxxxxxxxxxxxx> --- drivers/vfio/vfio.c | 3 ++- include/linux/vfio.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c index a4555014bd1e..a1f5904b5ea3 100644 --- a/drivers/vfio/vfio.c +++ b/drivers/vfio/vfio.c @@ -499,10 +499,11 @@ void vfio_device_put(struct vfio_device *device) } EXPORT_SYMBOL_GPL(vfio_device_put); -static bool vfio_device_try_get(struct vfio_device *device) +bool vfio_device_try_get(struct vfio_device *device) { return refcount_inc_not_zero(&device->refcount); } +EXPORT_SYMBOL_GPL(vfio_device_try_get); static struct vfio_device *vfio_group_get_device(struct vfio_group *group, struct device *dev) diff --git a/include/linux/vfio.h b/include/linux/vfio.h index 66dda06ec42d..bcd6eaaea9a5 100644 --- a/include/linux/vfio.h +++ b/include/linux/vfio.h @@ -126,6 +126,7 @@ int vfio_register_group_dev(struct vfio_device *device); int vfio_register_emulated_iommu_dev(struct vfio_device *device); void vfio_unregister_group_dev(struct vfio_device *device); extern struct vfio_device *vfio_device_get_from_dev(struct device *dev); +bool vfio_device_try_get(struct vfio_device *device); extern void vfio_device_put(struct vfio_device *device); int vfio_assign_device_set(struct vfio_device *device, void *set_id); -- 2.32.0
