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staging: comedi: me4000: clear the ME4000_AI_CTRL_REG in me4000_reset()

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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@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2015-08-05 10:45:13 -07:00 committed by Greg Kroah-Hartman
parent 2ff848c3be
commit a31b50ed1b
1 changed files with 3 additions and 0 deletions
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3
drivers/staging/comedi/drivers/me4000.c
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@ -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++)