Introduce an API mdev_alias() to provide access to optionally generated
alias.
Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>
Signed-off-by: Parav Pandit <parav@xxxxxxxxxxxx>
---
drivers/vfio/mdev/mdev_core.c | 12 ++++++++++++
include/linux/mdev.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/drivers/vfio/mdev/mdev_core.c b/drivers/vfio/mdev/mdev_core.c
index c8cd40366783..9eec556fbdd4 100644
--- a/drivers/vfio/mdev/mdev_core.c
+++ b/drivers/vfio/mdev/mdev_core.c
@@ -517,6 +517,18 @@ struct device *mdev_get_iommu_device(struct device *dev)
}
EXPORT_SYMBOL(mdev_get_iommu_device);
+/**
+ * mdev_alias: Return alias string of a mdev device
+ * @mdev: Pointer to the mdev device
+ * mdev_alias() returns alias string of a mdev device if alias is present,
+ * returns NULL otherwise.
+ */
+const char *mdev_alias(struct mdev_device *mdev)
+{
+ return mdev->alias;
+}
+EXPORT_SYMBOL(mdev_alias);
+
static int __init mdev_init(void)
{
int ret;
diff --git a/include/linux/mdev.h b/include/linux/mdev.h
index 06e162361df9..2997ce157523 100644
--- a/include/linux/mdev.h
+++ b/include/linux/mdev.h
@@ -148,5 +148,6 @@ void mdev_unregister_driver(struct mdev_driver *drv);
struct device *mdev_parent_dev(struct mdev_device *mdev);
struct device *mdev_dev(struct mdev_device *mdev);
struct mdev_device *mdev_from_dev(struct device *dev);
+const char *mdev_alias(struct mdev_device *mdev);
#endif /* MDEV_H */
--
2.19.2
