staging: comedi: dt282x: 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/dt282x.c b/drivers/staging/comedi/drivers/dt282x.c
index df37d18..5815fc2 100644 (file)
--- a/drivers/staging/comedi/drivers/dt282x.c
+++ b/drivers/staging/comedi/drivers/dt282x.c
@@ -339,11 +339,11 @@ static void dt282x_ao_dma_interrupt(struct comedi_device *dev)
 static void dt282x_ai_dma_interrupt(struct comedi_device *dev)
 {
        struct dt282x_private *devpriv = dev->private;
+       struct comedi_subdevice *s = dev->read_subdev;
        void *ptr;
        int size;
        int i;
        int ret;
-       struct comedi_subdevice *s = &dev->subdevices[0];
 
        outw(devpriv->supcsr | DT2821_CLRDMADNE, dev->iobase + DT2821_SUPCSR);
 
@@ -448,7 +448,7 @@ static irqreturn_t dt282x_interrupt(int irq, void *d)
 {
        struct comedi_device *dev = d;
        struct dt282x_private *devpriv = dev->private;
-       struct comedi_subdevice *s;
+       struct comedi_subdevice *s = dev->read_subdev;
        struct comedi_subdevice *s_ao;
        unsigned int supcsr, adcsr, dacsr;
        int handled = 0;
@@ -458,7 +458,6 @@ static irqreturn_t dt282x_interrupt(int irq, void *d)
                return IRQ_HANDLED;
        }
 
-       s = &dev->subdevices[0];
        s_ao = &dev->subdevices[1];
        adcsr = inw(dev->iobase + DT2821_ADCSR);
        dacsr = inw(dev->iobase + DT2821_DACSR);