linux-kernel - [PATCH] powerpc/pseries: Fix of_node_put() underflow during pseries remove

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Message-Id: <20170721145139.9384-1-lvivier@redhat.com>
Date:   Fri, 21 Jul 2017 16:51:39 +0200
From:   Laurent Vivier <lvivier@...hat.com>
To:     linux-kernel@...r.kernel.org
Cc:     David Gibson <david@...son.dropbear.id.au>,
        Michael Ellerman <mpe@...erman.id.au>,
        linuxppc-dev@...ts.ozlabs.org,
        Tyrel Datwyler <tyreld@...ux.vnet.ibm.com>,
        Thomas Huth <thuth@...hat.com>
Subject: [PATCH] powerpc/pseries: Fix of_node_put() underflow during pseries remove

As for commit 68baf692c435 ("powerpc/pseries: Fix of_node_put()
underflow during DLPAR remove"), the call to of_node_put()
must be removed from pSeries_reconfig_remove_node().

dlpar_detach_node() and pSeries_reconfig_remove_node() call
of_detach_node(), and thus the node should not be released
in this case too.

Signed-off-by: Laurent Vivier <lvivier@...hat.com>
---
 arch/powerpc/platforms/pseries/reconfig.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index e5bf1e8..011ef21 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -82,7 +82,6 @@ static int pSeries_reconfig_remove_node(struct device_node *np)
 
 	of_detach_node(np);
 	of_node_put(parent);
-	of_node_put(np); /* Must decrement the refcount */
 	return 0;
 }
 
-- 
2.9.4