Message ID | 1441621360-1536-1-git-send-email-bharata.rao@gmail.com (mailing list archive) |
---|---|
State | Accepted |
Headers | show |
On Mon, 2015-07-09 at 10:22:40 UTC, Bharata B Rao wrote: > From: Bharata B Rao <bharata@linux.vnet.ibm.com> > > Commit f32393c943e2 ("powerpc/pseries: Correct cpu affinity for > dlpar added cpus") moved dlpar_acquire_drc() call to before > dlpar_configure_connector() call in dlpar_cpu_probe(), but missed > to release the DRC if dlpar_configure_connector() failed. > During CPU hotplug, if configure-connector fails for any reason, > then this will result in subsequent CPU hotplug attempts to fail. > > Release the acquired DRC if dlpar_configure_connector() call fails > so that the DRC is left in right isolation and allocation state > for the subsequent hotplug operation to succeed. > > Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> > Reviewed-by: Nathan Fontenot <nfont@linux.vnet.ibm.com> Applied to powerpc fixes, thanks. https://git.kernel.org/powerpc/c/daebaabb5cfbe4a6f09ca0e0 cheers
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c index 47d9cebe..db17827 100644 --- a/arch/powerpc/platforms/pseries/dlpar.c +++ b/arch/powerpc/platforms/pseries/dlpar.c @@ -422,8 +422,10 @@ static ssize_t dlpar_cpu_probe(const char *buf, size_t count) dn = dlpar_configure_connector(cpu_to_be32(drc_index), parent); of_node_put(parent); - if (!dn) + if (!dn) { + dlpar_release_drc(drc_index); return -EINVAL; + } rc = dlpar_attach_node(dn); if (rc) {