Messages in this thread | | | Subject | Re: [STLinux Kernel] [PATCH 1/1] remoteproc: fix vdev reference management | From | Patrice Chotard <> | Date | Wed, 4 Jan 2017 09:13:41 +0100 |
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On 12/14/2016 04:11 PM, Loic Pallardy wrote: > Commit 2b45cef5868a ("remoteproc: Further extend the vdev life cycle") > extends kref support for vdev management. > It introduces a regression when following sequence is executed: > rproc_boot --> rproc_shutdown --> rproc_boot > Second rproc_boot call crashes on register_virtio_device as device > is already existing. > Issue is previous vdev is never released when rproc is stop because > associated refcount is too high. > > kref_get introduces is not needed as kref_init already initializes > krefcount to 1 because it considers associated variable as used. > This introduces a misalignment between kref_get and kref_put calls. > > Signed-off-by: Loic Pallardy <loic.pallardy@st.com> > --- > drivers/remoteproc/remoteproc_core.c | 3 --- > 1 file changed, 3 deletions(-) > > diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c > index 9a507e7..feb24c4 100644 > --- a/drivers/remoteproc/remoteproc_core.c > +++ b/drivers/remoteproc/remoteproc_core.c > @@ -396,9 +396,6 @@ 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); > > rproc_add_subdev(rproc, &rvdev->subdev, >
Hi Loic
Acked-by: Patrice Chotard <patrice.chotard@st.com>
Patrice
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