1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/staging/comedi/drivers/ni_daq_700.c b/drivers/staging/comedi/drivers/ni_daq_700.c
index 171a71d20c88..728bf7f14f7b 100644
--- a/drivers/staging/comedi/drivers/ni_daq_700.c
+++ b/drivers/staging/comedi/drivers/ni_daq_700.c
@@ -139,6 +139,8 @@ static int daq700_ai_rinsn(struct comedi_device *dev,
         /* write channel to multiplexer */
         /* set mask scan bit high to disable scanning */
         outb(chan | 0x80, dev->iobase + CMD_R1);
+        /* mux needs 2us to really settle [Fred Brooks]. */
+        udelay(2);
 
         /* convert n samples */
         for (n = 0; n < insn->n; n++) {