arm: arch_timer: balance device_node refcounting

When we get the device_node for the arch timer, it's refcount is
automatically incremented in of_find_matching_node, but it is
never decremented.

This patch decrements the refcount on the node after we're finished
using it.

Reported-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>

diff --git a/arch/arm/kernel/arch_timer.c b/arch/arm/kernel/arch_timer.c
index c8ef20747ee75a5b0426c8338b2bfb068e2d376e..6dd73c67d86452e8b7457fb20fb0a56ce0b08926 100644 (file)
--- a/arch/arm/kernel/arch_timer.c
+++ b/arch/arm/kernel/arch_timer.c
@@ -488,6 +488,8 @@ int __init arch_timer_of_register(void)
        for (i = PHYS_SECURE_PPI; i < MAX_TIMER_PPI; i++)
                arch_timer_ppi[i] = irq_of_parse_and_map(np, i);
 
+       of_node_put(np);
+
        /*
         * If no interrupt provided for virtual timer, we'll have to
         * stick to the physical timer. It'd better be accessible...