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authorBjorn Andersson <bjorn.andersson@linaro.org>2016-10-20 05:40:08 +0300
committerBjorn Andersson <bjorn.andersson@linaro.org>2016-11-15 08:52:16 +0300
commit2b45cef5868a9ad012121f4f7f11c700bfb7f2e4 (patch)
treec4b1b74c659c5945d440a03ddfecac615417e2a6 /drivers/remoteproc
parenta863af5d419361d3e657d4880dd3d7c490a8c4ba (diff)
downloadlinux-2b45cef5868a9ad012121f4f7f11c700bfb7f2e4.tar.xz
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.c7
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);
+ }
}
/*