| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.4 008/143] powerpc/pseries: add of_node_put() in dlpar_detach_node() | Date | Mon, 18 Feb 2019 14:42:16 +0100 |
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4.4-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 5b3f5c408d8cc59b87e47f1ab9803dbd006e4a91 ]
The previous commit, "of: overlay: add missing of_node_get() in __of_attach_node_sysfs" added a missing of_node_get() to __of_attach_node_sysfs(). This results in a refcount imbalance for nodes attached with dlpar_attach_node(). The calling sequence from dlpar_attach_node() to __of_attach_node_sysfs() is:
dlpar_attach_node() of_attach_node() __of_attach_node_sysfs()
For more detailed description of the node refcount, see commit 68baf692c435 ("powerpc/pseries: Fix of_node_put() underflow during DLPAR remove").
Tested-by: Alan Tull <atull@kernel.org> Acked-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Frank Rowand <frank.rowand@sony.com> Signed-off-by: Sasha Levin <sashal@kernel.org> --- arch/powerpc/platforms/pseries/dlpar.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/dlpar.c b/arch/powerpc/platforms/pseries/dlpar.c index 96536c969c9c..a8efed3b4691 100644 --- a/arch/powerpc/platforms/pseries/dlpar.c +++ b/arch/powerpc/platforms/pseries/dlpar.c @@ -280,6 +280,8 @@ int dlpar_detach_node(struct device_node *dn) if (rc) return rc; + of_node_put(dn); + return 0; } -- 2.19.1
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