diff --git a/include/asm-s390/cmb.h b/include/asm-s390/cmb.h
index 241756f80df35260a06641d523f42a519170f513..021e7c3223ece8f931db8fca9f7d1d10cc8d029d 100644
--- a/include/asm-s390/cmb.h
+++ b/include/asm-s390/cmb.h
@@ -88,7 +88,6 @@ extern u64 cmf_read(struct ccw_device *cdev, int index);
  *    any
  **/
 extern int cmf_readall(struct ccw_device *cdev, struct cmbdata*data);
-extern void cmf_reset(struct ccw_device *cdev);
 
 #endif /* __KERNEL__ */
 #endif /* S390_CMB_H */