Use the dev->read_subdev to get the comedi_subdevice instead of accessing
the dev->subdevices array directly.

Signed-off-by: H Hartley Sweeten <hswee...@visionengravers.com>
Cc: Ian Abbott <abbo...@mev.co.uk>
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/staging/comedi/drivers/comedi_parport.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/comedi/drivers/comedi_parport.c 
b/drivers/staging/comedi/drivers/comedi_parport.c
index 30ae0ec..5610030 100644
--- a/drivers/staging/comedi/drivers/comedi_parport.c
+++ b/drivers/staging/comedi/drivers/comedi_parport.c
@@ -222,7 +222,7 @@ static int parport_intr_cancel(struct comedi_device *dev,
 static irqreturn_t parport_interrupt(int irq, void *d)
 {
        struct comedi_device *dev = d;
-       struct comedi_subdevice *s = &dev->subdevices[3];
+       struct comedi_subdevice *s = dev->read_subdev;
        unsigned int ctrl;
 
        ctrl = inb(dev->iobase + PARPORT_CTRL_REG);
-- 
1.8.3.2

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