staging: comedi: pcl818: use subdevice (*cancel)

Use the subdevice (*cancel) operation to remove the need for a forward
declaration.

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/pcl818.c b/drivers/staging/comedi/drivers/pcl818.c
index f8fe04c..47c87fb 100644 (file)
--- a/drivers/staging/comedi/drivers/pcl818.c
+++ b/drivers/staging/comedi/drivers/pcl818.c
@@ -360,9 +360,6 @@ static int check_channel_list(struct comedi_device *dev,
                              struct comedi_subdevice *s,
                              unsigned int *chanlist, unsigned int n_chan);
 
-static int pcl818_ai_cancel(struct comedi_device *dev,
-                           struct comedi_subdevice *s);
-
 static void pcl818_start_pacer(struct comedi_device *dev, bool load_counters)
 {
        struct pcl818_private *devpriv = dev->private;
@@ -533,7 +530,7 @@ static irqreturn_t interrupt_pcl818_ai_mode13_int(int irq, void *d)
        }
        outb(0, dev->iobase + PCL818_STATUS);   /* clear INT request */
        comedi_error(dev, "A/D mode1/3 IRQ without DRDY!");
-       pcl818_ai_cancel(dev, s);
+       s->cancel(dev, s);
        s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR;
        comedi_event(dev, s);
        return IRQ_HANDLED;
@@ -547,7 +544,7 @@ conv_finish:
                        "A/D mode1/3 IRQ - channel dropout %x!=%x !\n",
                        chan,
                        devpriv->act_chanlist[devpriv->act_chanlist_pos]);
-               pcl818_ai_cancel(dev, s);
+               s->cancel(dev, s);
                s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR;
                comedi_event(dev, s);
                return IRQ_HANDLED;
@@ -564,7 +561,7 @@ conv_finish:
 
        if (!devpriv->neverending_ai) {
                if (devpriv->ai_act_scan == 0) {        /* all data sampled */
-                       pcl818_ai_cancel(dev, s);
+                       s->cancel(dev, s);
                        s->async->events |= COMEDI_CB_EOA;
                }
        }
@@ -615,7 +612,7 @@ static irqreturn_t interrupt_pcl818_ai_mode13_dma(int irq, void *d)
                                (ptr[bufptr] & 0xf),
                                devpriv->act_chanlist[devpriv->act_chanlist_pos],
                                devpriv->act_chanlist_pos);
-                       pcl818_ai_cancel(dev, s);
+                       s->cancel(dev, s);
                        s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR;
                        comedi_event(dev, s);
                        return IRQ_HANDLED;
@@ -635,7 +632,7 @@ static irqreturn_t interrupt_pcl818_ai_mode13_dma(int irq, void *d)
 
                if (!devpriv->neverending_ai)
                        if (devpriv->ai_act_scan == 0) {        /* all data sampled */
-                               pcl818_ai_cancel(dev, s);
+                               s->cancel(dev, s);
                                s->async->events |= COMEDI_CB_EOA;
                                comedi_event(dev, s);
                                return IRQ_HANDLED;
@@ -666,7 +663,7 @@ static irqreturn_t interrupt_pcl818_ai_mode13_fifo(int irq, void *d)
 
        if (lo & 4) {
                comedi_error(dev, "A/D mode1/3 FIFO overflow!");
-               pcl818_ai_cancel(dev, s);
+               s->cancel(dev, s);
                s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR;
                comedi_event(dev, s);
                return IRQ_HANDLED;
@@ -674,7 +671,7 @@ static irqreturn_t interrupt_pcl818_ai_mode13_fifo(int irq, void *d)
 
        if (lo & 1) {
                comedi_error(dev, "A/D mode1/3 FIFO interrupt without data!");
-               pcl818_ai_cancel(dev, s);
+               s->cancel(dev, s);
                s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR;
                comedi_event(dev, s);
                return IRQ_HANDLED;
@@ -692,7 +689,7 @@ static irqreturn_t interrupt_pcl818_ai_mode13_fifo(int irq, void *d)
                                "A/D mode1/3 FIFO - channel dropout %d!=%d !\n",
                                (lo & 0xf),
                                devpriv->act_chanlist[devpriv->act_chanlist_pos]);
-                       pcl818_ai_cancel(dev, s);
+                       s->cancel(dev, s);
                        s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR;
                        comedi_event(dev, s);
                        return IRQ_HANDLED;
@@ -712,7 +709,7 @@ static irqreturn_t interrupt_pcl818_ai_mode13_fifo(int irq, void *d)
 
                if (!devpriv->neverending_ai)
                        if (devpriv->ai_act_scan == 0) {        /* all data sampled */
-                               pcl818_ai_cancel(dev, s);
+                               s->cancel(dev, s);
                                s->async->events |= COMEDI_CB_EOA;
                                comedi_event(dev, s);
                                return IRQ_HANDLED;
@@ -732,6 +729,7 @@ static irqreturn_t interrupt_pcl818(int irq, void *d)
 {
        struct comedi_device *dev = d;
        struct pcl818_private *devpriv = dev->private;
+       struct comedi_subdevice *s = dev->read_subdev;
 
        if (!dev->attached) {
                comedi_error(dev, "premature interrupt");
@@ -750,7 +748,7 @@ static irqreturn_t interrupt_pcl818(int irq, void *d)
                         */
                        devpriv->ai_act_scan = 0;
                        devpriv->neverending_ai = 0;
-                       pcl818_ai_cancel(dev, dev->read_subdev);
+                       s->cancel(dev, s);
                }
 
                outb(0, dev->iobase + PCL818_CLRINT);   /* clear INT request */