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| author |   Bjorn Andersson <bjorn.andersson@linaro.org> | 2016-10-19 19:40:08 -0700 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2016-11-14 21:52:16 -0800 |
| commit | 2b45cef5868a9ad012121f4f7f11c700bfb7f2e4 (patch) | |
| tree | c4b1b74c659c5945d440a03ddfecac615417e2a6 /drivers/remoteproc | |
| parent | remoteproc: virtio: Anchor vring life cycle in vdev (diff) | |
| download | linux-dev-2b45cef5868a9ad012121f4f7f11c700bfb7f2e4.tar.xz linux-dev-2b45cef5868a9ad012121f4f7f11c700bfb7f2e4.zip | |
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>
Diffstat (limited to 'drivers/remoteproc')
| -rw-r--r-- | drivers/remoteproc/remoteproc_core.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index bb78316f8120..62de765a9498 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -377,6 +377,9 @@ static int rproc_handle_vdev(struct rproc *rproc, struct fw_rsc_vdev *rsc, goto unwind_vring_allocations; } + /* track the rvdevs list reference */ + kref_get(&rvdev->refcount); + list_add_tail(&rvdev->node, &rproc->rvdevs); /* 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 */ - 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); + kref_put(&rvdev->refcount, rproc_vdev_release); + } } /* |