diff options
| author | Eli Cohen <elic@nvidia.com> | 2022-01-05 13:46:35 +0200 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2022-01-14 18:50:53 -0500 |
| commit | 73bc0dbb591baea322a7319c735e5f6c7dba9cfb (patch) | |
| tree | a37442b71e81cf92ef849f36fe9be3fd4dfe476f /drivers/vdpa | |
| parent | a7f46ba42485394edf9836969e220878f4908465 (diff) | |
| download | lwn-73bc0dbb591baea322a7319c735e5f6c7dba9cfb.tar.gz lwn-73bc0dbb591baea322a7319c735e5f6c7dba9cfb.zip | |
vdpa: Sync calls set/get config/status with cf_mutex
Add wrappers to get/set status and protect these operations with
cf_mutex to serialize these operations with respect to get/set config
operations.
Signed-off-by: Eli Cohen <elic@nvidia.com>
Link: https://lore.kernel.org/r/20220105114646.577224-4-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/vdpa')
| -rw-r--r-- | drivers/vdpa/vdpa.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index 42d71d60d5dc..5134c83c4a22 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -21,6 +21,25 @@ static LIST_HEAD(mdev_head); static DEFINE_MUTEX(vdpa_dev_mutex); static DEFINE_IDA(vdpa_index_ida); +u8 vdpa_get_status(struct vdpa_device *vdev) +{ + u8 status; + + mutex_lock(&vdev->cf_mutex); + status = vdev->config->get_status(vdev); + mutex_unlock(&vdev->cf_mutex); + return status; +} +EXPORT_SYMBOL(vdpa_get_status); + +void vdpa_set_status(struct vdpa_device *vdev, u8 status) +{ + mutex_lock(&vdev->cf_mutex); + vdev->config->set_status(vdev, status); + mutex_unlock(&vdev->cf_mutex); +} +EXPORT_SYMBOL(vdpa_set_status); + static struct genl_family vdpa_nl_family; static int vdpa_dev_probe(struct device *d) |