Commit 8b257783 authored Jan 24, 2017 by Gavin Shan Committed by Michael Ellerman Jan 25, 2017

powerpc/kernel: Fix unbalanced refcount on RTAS device node



The RTAS device-tree node's refcount has been increased by one in
the function call of_find_node_by_name(), but it's missed to be
decreased by one in the error path. It leads to unbalanced refcount
on RTAS device-tree node.

This fixes above issue by decreasing RTAS device-tree node's refcount
in error path.

Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

parent de6d2d1b

arch/powerpc/kernel/rtas.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1158,6 +1158,7 @@ void __init rtas_initialize(void)
		no_base = of_property_read_u32(rtas.dev, "linux,rtas-base", &base);
		no_size = of_property_read_u32(rtas.dev, "rtas-size", &size);
		if (no_base \|\| no_size) {
		of_node_put(rtas.dev);
		rtas.dev = NULL;
		return;
		}