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remoteproc: Further extend the vdev life cycle 

Tie the vdev (and hence vring) life cycle to the resource parsing and
resource cleanup operations, allowing us to safely register and
unregister virtio devices on the go.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Bjorn Andersson 2016-10-19 19:40:08 -07:00
parent a863af5d41
commit 2b45cef586
1 changed files with 6 additions and 1 deletions
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7
drivers/remoteproc/remoteproc_core.c
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@ -377,6 +377,9 @@ static int rproc_handle_vdev(struct rproc *rproc, struct fw_rsc_vdev *rsc,
goto unwind_vring_allocations; goto unwind_vring_allocations;
} }
/* track the rvdevs list reference */
kref_get(&rvdev->refcount);
list_add_tail(&rvdev->node, &rproc->rvdevs); list_add_tail(&rvdev->node, &rproc->rvdevs);
/* it is now safe to add the virtio device */ /* it is now safe to add the virtio device */
@ -839,8 +842,10 @@ static void rproc_resource_cleanup(struct rproc *rproc)
} }
/* clean up remote vdev entries */ /* clean up remote vdev entries */
list_for_each_entry_safe(rvdev, rvtmp, &rproc->rvdevs, node) list_for_each_entry_safe(rvdev, rvtmp, &rproc->rvdevs, node) {
rproc_remove_virtio_dev(rvdev); rproc_remove_virtio_dev(rvdev);
kref_put(&rvdev->refcount, rproc_vdev_release);
}
} }
/* /*