1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 5e7c6ee8c35c..ce8171bc6fac 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -101,6 +101,9 @@ struct msi_desc;
  * @set_type:           set the flow type (IRQ_TYPE_LEVEL/etc.) of an IRQ
  * @set_wake:           enable/disable power-management wake-on of an IRQ
  *
+ * @bus_lock:           function to lock access to slow bus (i2c) chips
+ * @bus_sync_unlock:    function to sync and unlock slow bus (i2c) chips
+ *
  * @release:            release function solely used by UML
  * @typename:           obsoleted by name, kept as migration helper
  */
@@ -124,6 +127,9 @@ struct irq_chip {
         int             (*set_type)(unsigned int irq, unsigned int flow_type);
         int             (*set_wake)(unsigned int irq, unsigned int on);
 
+        void            (*bus_lock)(unsigned int irq);
+        void            (*bus_sync_unlock)(unsigned int irq);
+
         /* Currently used only by UML, might disappear one day.*/
 #ifdef CONFIG_IRQ_RELEASE_METHOD
         void            (*release)(unsigned int irq, void *dev_id);