staging: comedi: rtd520: use dev->read_subdev

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 <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/rtd520.c b/drivers/staging/comedi/drivers/rtd520.c
index c6a664f..0f026af 100644 (file)
--- a/drivers/staging/comedi/drivers/rtd520.c
+++ b/drivers/staging/comedi/drivers/rtd520.c
@@ -689,7 +689,7 @@ static int ai_read_dregs(struct comedi_device *dev, struct comedi_subdevice *s)
 static irqreturn_t rtd_interrupt(int irq, void *d)
 {
        struct comedi_device *dev = d;
-       struct comedi_subdevice *s = &dev->subdevices[0];
+       struct comedi_subdevice *s = dev->read_subdev;
        struct rtd_private *devpriv = dev->private;
        u32 overrun;
        u16 status;