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powerpc/pseries: Fix parent_dn reference leak in add_dt_node()

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A reference to the parent device node is held by add_dt_node() for the
node to be added. If the call to dlpar_configure_connector() fails
add_dt_node() returns ENOENT and that reference is not freed.

Add a call to of_node_put(parent_dn) prior to bailing out after a
failed dlpar_configure_connector() call.

Fixes: 8d5ff32076 ("powerpc/pseries: Make dlpar_configure_connector parent node aware")
Cc: stable@vger.kernel.org # v3.12+
Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Tyrel Datwyler
2017-09-20 17:02:52 -04:00
committed by Michael Ellerman
parent 087ff6a5ae
commit b537ca6fed
1 changed files with 3 additions and 1 deletions
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4
arch/powerpc/platforms/pseries/mobility.c
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@@ -226,8 +226,10 @@ static int add_dt_node(__be32 parent_phandle, __be32 drc_index)
return -ENOENT; return -ENOENT;
dn = dlpar_configure_connector(drc_index, parent_dn); dn = dlpar_configure_connector(drc_index, parent_dn);
if (!dn) if (!dn) {
of_node_put(parent_dn);
return -ENOENT; return -ENOENT;
}
rc = dlpar_attach_node(dn, parent_dn); rc = dlpar_attach_node(dn, parent_dn);
if (rc) if (rc)