From: Randy Dunlap <randy.dunlap at oracle.com> comedi driver(s) use udelay() so they need to #include delay.h. drivers/staging/comedi/drivers/adq12b.c: In function 'adq12b_ai_rinsn': drivers/staging/comedi/drivers/adq12b.c:328: error: implicit declaration of function 'udelay' Signed-off-by: Randy Dunlap <randy.dunlap at oracle.com> Signed-off-by: Greg Kroah-Hartman <gregkh at suse.de> --- drivers/staging/comedi/comedidev.h | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/staging/comedi/comedidev.h b/drivers/staging/comedi/comedidev.h index 7a1ccde..a54cc31 100644 --- a/drivers/staging/comedi/comedidev.h +++ b/drivers/staging/comedi/comedidev.h @@ -28,6 +28,7 @@ #include <linux/module.h> #include <linux/kdev_t.h> #include <linux/slab.h> +#include <linux/delay.h> #include <linux/errno.h> #include <linux/spinlock.h> #include <linux/mutex.h> -- 1.6.3.2