diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/rpmsg/virtio_rpmsg_bus.c | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/drivers/rpmsg/virtio_rpmsg_bus.c b/drivers/rpmsg/virtio_rpmsg_bus.c index aaa6840ee05b..a59684b5fc68 100644 --- a/drivers/rpmsg/virtio_rpmsg_bus.c +++ b/drivers/rpmsg/virtio_rpmsg_bus.c @@ -213,13 +213,10 @@ static struct rpmsg_endpoint *__rpmsg_create_ept(struct virtproc_info *vrp, struct rpmsg_channel *rpdev, rpmsg_rx_cb_t cb, void *priv, u32 addr) { - int err, tmpaddr, request; + int id_min, id_max, id; struct rpmsg_endpoint *ept; struct device *dev = rpdev ? &rpdev->dev : &vrp->vdev->dev; - if (!idr_pre_get(&vrp->endpoints, GFP_KERNEL)) - return NULL; - ept = kzalloc(sizeof(*ept), GFP_KERNEL); if (!ept) { dev_err(dev, "failed to kzalloc a new ept\n"); @@ -234,31 +231,28 @@ static struct rpmsg_endpoint *__rpmsg_create_ept(struct virtproc_info *vrp, ept->priv = priv; /* do we need to allocate a local address ? */ - request = addr == RPMSG_ADDR_ANY ? RPMSG_RESERVED_ADDRESSES : addr; + if (addr == RPMSG_ADDR_ANY) { + id_min = RPMSG_RESERVED_ADDRESSES; + id_max = 0; + } else { + id_min = addr; + id_max = addr + 1; + } mutex_lock(&vrp->endpoints_lock); /* bind the endpoint to an rpmsg address (and allocate one if needed) */ - err = idr_get_new_above(&vrp->endpoints, ept, request, &tmpaddr); - if (err) { - dev_err(dev, "idr_get_new_above failed: %d\n", err); + id = idr_alloc(&vrp->endpoints, ept, id_min, id_max, GFP_KERNEL); + if (id < 0) { + dev_err(dev, "idr_alloc failed: %d\n", id); goto free_ept; } - - /* make sure the user's address request is fulfilled, if relevant */ - if (addr != RPMSG_ADDR_ANY && tmpaddr != addr) { - dev_err(dev, "address 0x%x already in use\n", addr); - goto rem_idr; - } - - ept->addr = tmpaddr; + ept->addr = id; mutex_unlock(&vrp->endpoints_lock); return ept; -rem_idr: - idr_remove(&vrp->endpoints, request); free_ept: mutex_unlock(&vrp->endpoints_lock); kref_put(&ept->refcount, __ept_release); |