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staging: comedi: ni_6527: reset edge detection registers

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`ni6527_reset()` is called to reset various registers when the device is
being initialized or deinitialized.  The edge detection interrupt is
disabled by this function, but the rising and falling edge detection
registers are currently left alone.  Call `ni6527_set_edge_detection()`
to set them to a known, disabled state.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott 2014-07-21 17:29:06 +01:00 committed by Greg Kroah-Hartman
parent 110f9e687c
commit e44c53920f
1 changed files with 3 additions and 0 deletions
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3
drivers/staging/comedi/drivers/ni_6527.c
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@ -393,6 +393,9 @@ static void ni6527_reset(struct comedi_device *dev)
/* disable deglitch filters on all channels */
ni6527_set_filter_enable(dev, 0);
/* disable edge detection */
ni6527_set_edge_detection(dev, 0xffffffff, 0, 0);
writeb(NI6527_CLR_IRQS | NI6527_CLR_RESET_FILT,
mmio + NI6527_CLR_REG);
writeb(NI6527_CTRL_DISABLE_IRQS, mmio + NI6527_CTRL_REG);