1 files changed, 7 insertions, 5 deletions

diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
index f42e869ee3cc..4a5aa8ca97a5 100644
--- a/arch/powerpc/kernel/irq.c
+++ b/arch/powerpc/kernel/irq.c
@@ -814,8 +814,7 @@ void irq_dispose_mapping(unsigned int virq)
                 return;
 
         host = irq_map[virq].host;
-        WARN_ON (host == NULL);
-        if (host == NULL)
+        if (WARN_ON(host == NULL))
                 return;
 
         /* Never unmap legacy interrupts */
@@ -898,7 +897,8 @@ unsigned int irq_radix_revmap_lookup(struct irq_host *host,
         struct irq_map_entry *ptr;
         unsigned int virq;
 
-        WARN_ON(host->revmap_type != IRQ_HOST_MAP_TREE);
+        if (WARN_ON_ONCE(host->revmap_type != IRQ_HOST_MAP_TREE))
+                return irq_find_mapping(host, hwirq);
 
         /*
          * No rcu_read_lock(ing) needed, the ptr returned can't go under us
@@ -922,7 +922,8 @@ unsigned int irq_radix_revmap_lookup(struct irq_host *host,
 void irq_radix_revmap_insert(struct irq_host *host, unsigned int virq,
                              irq_hw_number_t hwirq)
 {
-        WARN_ON(host->revmap_type != IRQ_HOST_MAP_TREE);
+        if (WARN_ON(host->revmap_type != IRQ_HOST_MAP_TREE))
+                return;
 
         if (virq != NO_IRQ) {
                 mutex_lock(&revmap_trees_mutex);
@@ -937,7 +938,8 @@ unsigned int irq_linear_revmap(struct irq_host *host,
 {
         unsigned int *revmap;
 
-        WARN_ON(host->revmap_type != IRQ_HOST_MAP_LINEAR);
+        if (WARN_ON_ONCE(host->revmap_type != IRQ_HOST_MAP_LINEAR))
+                return irq_find_mapping(host, hwirq);
 
         /* Check revmap bounds */
         if (unlikely(hwirq >= host->revmap_data.linear.size))