1 files changed, 19 insertions, 1 deletions

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index cc54c6276356..fdb3fbe2b0c4 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -246,6 +246,17 @@ static unsigned int default_startup(unsigned int irq)
 }
 
 /*
+ * default shutdown function
+ */
+static void default_shutdown(unsigned int irq)
+{
+        struct irq_desc *desc = irq_desc + irq;
+
+        desc->chip->mask(irq);
+        desc->status |= IRQ_MASKED;
+}
+
+/*
  * Fixup enable/disable function pointers
  */
 void irq_chip_set_defaults(struct irq_chip *chip)
@@ -256,8 +267,15 @@ void irq_chip_set_defaults(struct irq_chip *chip)
                 chip->disable = default_disable;
         if (!chip->startup)
                 chip->startup = default_startup;
+        /*
+         * We use chip->disable, when the user provided its own. When
+         * we have default_disable set for chip->disable, then we need
+         * to use default_shutdown, otherwise the irq line is not
+         * disabled on free_irq():
+         */
         if (!chip->shutdown)
-                chip->shutdown = chip->disable;
+                chip->shutdown = chip->disable != default_disable ?
+                        chip->disable : default_shutdown;
         if (!chip->name)
                 chip->name = chip->typename;
         if (!chip->end)