MIPS: generic: fix missing of_node_put()

[ Upstream commit 28ec2238f37e72a3a40a7eb46893e7651bcc40a6 ]

of_find_compatible_node() returns a device_node pointer with refcount
incremented and must be decremented explicitly.
 As this code is using the result only to check presence of the interrupt
controller (!NULL) but not actually using the result otherwise the
refcount can be decremented here immediately again.

Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/19820/
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: James Hogan <jhogan@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/mips/generic/init.c b/arch/mips/generic/init.c
index 5ba6fcc26fa726aff50cc3a64315855eb935c1b0..94a78dbbc91f78acb51a8f092ae084646f1c2182 100644 (file)
--- a/arch/mips/generic/init.c
+++ b/arch/mips/generic/init.c
@@ -204,6 +204,7 @@ void __init arch_init_irq(void)
                                            "mti,cpu-interrupt-controller");
        if (!cpu_has_veic && !intc_node)
                mips_cpu_irq_init();
+       of_node_put(intc_node);
 
        irqchip_init();
 }