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Subject[PATCH 4.9 106/157] powerpc/powernv: add missing of_node_put
Date
From: Julia Lawall <Julia.Lawall@lip6.fr>

[ Upstream commit 7d405a939ca960162eb30c1475759cb2fdf38f8c ]

for_each_compatible_node performs an of_node_get on each iteration, so
a break out of the loop requires an of_node_put.

A simplified version of the semantic patch that fixes this problem is as
follows (http://coccinelle.lip6.fr):

// <smpl>
@@
local idexpression n;
expression e;
@@

for_each_compatible_node(n,...) {
...
(
of_node_put(n);
|
e = n
|
+ of_node_put(n);
? break;
)
...
}
... when != n
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/1448051604-25256-4-git-send-email-Julia.Lawall@lip6.fr
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/powerpc/platforms/powernv/opal-lpc.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/platforms/powernv/opal-lpc.c b/arch/powerpc/platforms/powernv/opal-lpc.c
index e4169d68cb328..d28c4a9269c38 100644
--- a/arch/powerpc/platforms/powernv/opal-lpc.c
+++ b/arch/powerpc/platforms/powernv/opal-lpc.c
@@ -401,6 +401,7 @@ void opal_lpc_init(void)
if (!of_get_property(np, "primary", NULL))
continue;
opal_lpc_chip_id = of_get_ibm_chip_id(np);
+ of_node_put(np);
break;
}
if (opal_lpc_chip_id < 0)
--
2.34.1


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