Use the dev->read_subdev that was setup in the device attach 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/dt2814.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/staging/comedi/drivers/dt2814.c 
b/drivers/staging/comedi/drivers/dt2814.c
index e52d22e..abad6e4 100644
--- a/drivers/staging/comedi/drivers/dt2814.c
+++ b/drivers/staging/comedi/drivers/dt2814.c
@@ -197,7 +197,7 @@ static irqreturn_t dt2814_interrupt(int irq, void *d)
        int lo, hi;
        struct comedi_device *dev = d;
        struct dt2814_private *devpriv = dev->private;
-       struct comedi_subdevice *s;
+       struct comedi_subdevice *s = dev->read_subdev;
        int data;
 
        if (!dev->attached) {
@@ -205,8 +205,6 @@ static irqreturn_t dt2814_interrupt(int irq, void *d)
                return IRQ_HANDLED;
        }
 
-       s = &dev->subdevices[0];
-
        hi = inb(dev->iobase + DT2814_DATA);
        lo = inb(dev->iobase + DT2814_DATA);
 
-- 
1.8.4.4

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