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-rw-r--r--kernel/irq/matrix.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/kernel/irq/matrix.c b/kernel/irq/matrix.c
index 6f8b1d171cdc..578596e41cb6 100644
--- a/kernel/irq/matrix.c
+++ b/kernel/irq/matrix.c
@@ -422,7 +422,9 @@ void irq_matrix_free(struct irq_matrix *m, unsigned int cpu,
if (WARN_ON_ONCE(bit < m->alloc_start || bit >= m->alloc_end))
return;
- clear_bit(bit, cm->alloc_map);
+ if (WARN_ON_ONCE(!test_and_clear_bit(bit, cm->alloc_map)))
+ return;
+
cm->allocated--;
if(managed)
cm->managed_allocated--;