staging: comedi: dt3000: 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/dt3000.c b/drivers/staging/comedi/drivers/dt3000.c
index 50aaa011153c6e2148acd89f0c0cd286c04da2b4..f52a4476cb73b746f2482b6e303f743e99df1335 100644 (file)
--- a/drivers/staging/comedi/drivers/dt3000.c
+++ b/drivers/staging/comedi/drivers/dt3000.c
@@ -352,13 +352,12 @@ static irqreturn_t dt3k_interrupt(int irq, void *d)
 {
        struct comedi_device *dev = d;
        struct dt3k_private *devpriv = dev->private;
-       struct comedi_subdevice *s;
+       struct comedi_subdevice *s = dev->read_subdev;
        unsigned int status;
 
        if (!dev->attached)
                return IRQ_NONE;
 
-       s = &dev->subdevices[0];
        status = readw(devpriv->io_addr + DPR_Intr_Flag);
 
        if (status & DT3000_ADFULL) {