[PATCH v2 36/46] staging: comedi: me4000: clear the ME4000_AI_CTRL_REG in me4000_reset()

[H Hartley Sweeten]

Reset the analog input control register after ensuring that any active
conversions have been stopped. This mimics what the ai subdevice (*cancel)
does.

Signed-off-by: H Hartley Sweeten <hsweeten at visionengravers.com>
Cc: Ian Abbott <abbotti at mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
 drivers/staging/comedi/drivers/me4000.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/staging/comedi/drivers/me4000.c b/drivers/staging/comedi/drivers/me4000.c
index b3d871b..3d4a9c8 100644
--- a/drivers/staging/comedi/drivers/me4000.c
+++ b/drivers/staging/comedi/drivers/me4000.c
@@ -414,6 +414,9 @@ static void me4000_reset(struct comedi_device *dev)
 	outl(ME4000_AI_CTRL_IMMEDIATE_STOP | ME4000_AI_CTRL_STOP,
 	     dev->iobase + ME4000_AI_CTRL_REG);
 
+	/* Clear the analog input control register */
+	outl(0x0, dev->iobase + ME4000_AI_CTRL_REG);
+
 	/* Set both stop bits in the analog output control register */
 	val = ME4000_AO_CTRL_IMMEDIATE_STOP | ME4000_AO_CTRL_STOP;
 	for (chan = 0; chan < 4; chan++)
-- 
2.4.3