diff options
Diffstat (limited to 'drivers/vdpa/vdpa.c')
| -rw-r--r-- | drivers/vdpa/vdpa.c | 30 |
1 files changed, 17 insertions, 13 deletions
diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index da67f07e24fd..bb3f1d1f0422 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -69,19 +69,18 @@ static void vdpa_release_dev(struct device *d) * initialized but before registered. * @parent: the parent device * @config: the bus operations that is supported by this device - * @nvqs: number of virtqueues supported by this device * @size: size of the parent structure that contains private data * @name: name of the vdpa device; optional. * * Driver should use vdpa_alloc_device() wrapper macro instead of * using this directly. * - * Returns an error when parent/config/dma_dev is not set or fail to get - * ida. + * Return: Returns an error when parent/config/dma_dev is not set or fail to get + * ida. */ struct vdpa_device *__vdpa_alloc_device(struct device *parent, const struct vdpa_config_ops *config, - int nvqs, size_t size, const char *name) + size_t size, const char *name) { struct vdpa_device *vdev; int err = -EINVAL; @@ -107,7 +106,6 @@ struct vdpa_device *__vdpa_alloc_device(struct device *parent, vdev->index = err; vdev->config = config; vdev->features_valid = false; - vdev->nvqs = nvqs; if (name) err = dev_set_name(&vdev->dev, "%s", name); @@ -136,10 +134,12 @@ static int vdpa_name_match(struct device *dev, const void *data) return (strcmp(dev_name(&vdev->dev), data) == 0); } -static int __vdpa_register_device(struct vdpa_device *vdev) +static int __vdpa_register_device(struct vdpa_device *vdev, int nvqs) { struct device *dev; + vdev->nvqs = nvqs; + lockdep_assert_held(&vdpa_dev_mutex); dev = bus_find_device(&vdpa_bus, NULL, dev_name(&vdev->dev), vdpa_name_match); if (dev) { @@ -155,15 +155,16 @@ static int __vdpa_register_device(struct vdpa_device *vdev) * Caller must invoke this routine in the management device dev_add() * callback after setting up valid mgmtdev for this vdpa device. * @vdev: the vdpa device to be registered to vDPA bus + * @nvqs: number of virtqueues supported by this device * - * Returns an error when fail to add device to vDPA bus + * Return: Returns an error when fail to add device to vDPA bus */ -int _vdpa_register_device(struct vdpa_device *vdev) +int _vdpa_register_device(struct vdpa_device *vdev, int nvqs) { if (!vdev->mdev) return -EINVAL; - return __vdpa_register_device(vdev); + return __vdpa_register_device(vdev, nvqs); } EXPORT_SYMBOL_GPL(_vdpa_register_device); @@ -171,15 +172,16 @@ EXPORT_SYMBOL_GPL(_vdpa_register_device); * vdpa_register_device - register a vDPA device * Callers must have a succeed call of vdpa_alloc_device() before. * @vdev: the vdpa device to be registered to vDPA bus + * @nvqs: number of virtqueues supported by this device * - * Returns an error when fail to add to vDPA bus + * Return: Returns an error when fail to add to vDPA bus */ -int vdpa_register_device(struct vdpa_device *vdev) +int vdpa_register_device(struct vdpa_device *vdev, int nvqs) { int err; mutex_lock(&vdpa_dev_mutex); - err = __vdpa_register_device(vdev); + err = __vdpa_register_device(vdev, nvqs); mutex_unlock(&vdpa_dev_mutex); return err; } @@ -216,7 +218,7 @@ EXPORT_SYMBOL_GPL(vdpa_unregister_device); * @drv: the vdpa device driver to be registered * @owner: module owner of the driver * - * Returns an err when fail to do the registration + * Return: Returns an err when fail to do the registration */ int __vdpa_register_driver(struct vdpa_driver *drv, struct module *owner) { @@ -243,6 +245,8 @@ EXPORT_SYMBOL_GPL(vdpa_unregister_driver); * @mdev: Pointer to vdpa management device * vdpa_mgmtdev_register() register a vdpa management device which supports * vdpa device management. + * Return: Returns 0 on success or failure when required callback ops are not + * initialized. */ int vdpa_mgmtdev_register(struct vdpa_mgmt_dev *mdev) { |