staging: comedi: cb_das16_cs: refactor the comedi attach/detach

Move the comedi_driver attach/detach functions, as well as the
probe function used during the attach. This removes the need
for all the forward declarations.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/cb_das16_cs.c b/drivers/staging/comedi/drivers/cb_das16_cs.c
index 92c774da25e80072d6a8a604ad022e447cb5e2b1..e0821b9b62119232cfef0923503632fe5ae1f1c3 100644 (file)
--- a/drivers/staging/comedi/drivers/cb_das16_cs.c
+++ b/drivers/staging/comedi/drivers/cb_das16_cs.c
@@ -106,159 +106,6 @@ static const struct comedi_lrange das16cs_ai_range = { 4, {
                                                           }
 };
 
-static irqreturn_t das16cs_interrupt(int irq, void *d);
-static int das16cs_ai_rinsn(struct comedi_device *dev,
-                           struct comedi_subdevice *s,
-                           struct comedi_insn *insn, unsigned int *data);
-static int das16cs_ai_cmd(struct comedi_device *dev,
-                         struct comedi_subdevice *s);
-static int das16cs_ai_cmdtest(struct comedi_device *dev,
-                             struct comedi_subdevice *s,
-                             struct comedi_cmd *cmd);
-static int das16cs_ao_winsn(struct comedi_device *dev,
-                           struct comedi_subdevice *s,
-                           struct comedi_insn *insn, unsigned int *data);
-static int das16cs_ao_rinsn(struct comedi_device *dev,
-                           struct comedi_subdevice *s,
-                           struct comedi_insn *insn, unsigned int *data);
-static int das16cs_dio_insn_bits(struct comedi_device *dev,
-                                struct comedi_subdevice *s,
-                                struct comedi_insn *insn, unsigned int *data);
-static int das16cs_dio_insn_config(struct comedi_device *dev,
-                                  struct comedi_subdevice *s,
-                                  struct comedi_insn *insn,
-                                  unsigned int *data);
-static int das16cs_timer_insn_read(struct comedi_device *dev,
-                                  struct comedi_subdevice *s,
-                                  struct comedi_insn *insn,
-                                  unsigned int *data);
-static int das16cs_timer_insn_config(struct comedi_device *dev,
-                                    struct comedi_subdevice *s,
-                                    struct comedi_insn *insn,
-                                    unsigned int *data);
-
-static const struct das16cs_board *das16cs_probe(struct comedi_device *dev,
-                                                struct pcmcia_device *link)
-{
-       int i;
-
-       for (i = 0; i < n_boards; i++) {
-               if (das16cs_boards[i].device_id == link->card_id)
-                       return das16cs_boards + i;
-       }
-
-       dev_dbg(dev->class_dev, "unknown board!\n");
-
-       return NULL;
-}
-
-static int das16cs_attach(struct comedi_device *dev,
-                         struct comedi_devconfig *it)
-{
-       struct pcmcia_device *link;
-       struct comedi_subdevice *s;
-       int ret;
-       int i;
-
-       dev_dbg(dev->class_dev, "cb_das16_cs: attach\n");
-
-       link = cur_dev;         /* XXX hack */
-       if (!link)
-               return -EIO;
-
-       dev->iobase = link->resource[0]->start;
-       dev_dbg(dev->class_dev, "I/O base=0x%04lx\n", dev->iobase);
-
-       dev_dbg(dev->class_dev, "fingerprint:\n");
-       for (i = 0; i < 48; i += 2)
-               dev_dbg(dev->class_dev, "%04x\n", inw(dev->iobase + i));
-
-
-       ret = request_irq(link->irq, das16cs_interrupt,
-                         IRQF_SHARED, "cb_das16_cs", dev);
-       if (ret < 0)
-               return ret;
-
-       dev->irq = link->irq;
-
-       dev_dbg(dev->class_dev, "irq=%u\n", dev->irq);
-
-       dev->board_ptr = das16cs_probe(dev, link);
-       if (!dev->board_ptr)
-               return -EIO;
-
-       dev->board_name = thisboard->name;
-
-       if (alloc_private(dev, sizeof(struct das16cs_private)) < 0)
-               return -ENOMEM;
-
-       ret = comedi_alloc_subdevices(dev, 4);
-       if (ret)
-               return ret;
-
-       s = dev->subdevices + 0;
-       dev->read_subdev = s;
-       /* analog input subdevice */
-       s->type = COMEDI_SUBD_AI;
-       s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ;
-       s->n_chan = 16;
-       s->maxdata = 0xffff;
-       s->range_table = &das16cs_ai_range;
-       s->len_chanlist = 16;
-       s->insn_read = das16cs_ai_rinsn;
-       s->do_cmd = das16cs_ai_cmd;
-       s->do_cmdtest = das16cs_ai_cmdtest;
-
-       s = dev->subdevices + 1;
-       /* analog output subdevice */
-       if (thisboard->n_ao_chans) {
-               s->type = COMEDI_SUBD_AO;
-               s->subdev_flags = SDF_WRITABLE;
-               s->n_chan = thisboard->n_ao_chans;
-               s->maxdata = 0xffff;
-               s->range_table = &range_bipolar10;
-               s->insn_write = &das16cs_ao_winsn;
-               s->insn_read = &das16cs_ao_rinsn;
-       }
-
-       s = dev->subdevices + 2;
-       /* digital i/o subdevice */
-       if (1) {
-               s->type = COMEDI_SUBD_DIO;
-               s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
-               s->n_chan = 8;
-               s->maxdata = 1;
-               s->range_table = &range_digital;
-               s->insn_bits = das16cs_dio_insn_bits;
-               s->insn_config = das16cs_dio_insn_config;
-       } else {
-               s->type = COMEDI_SUBD_UNUSED;
-       }
-
-       s = dev->subdevices + 3;
-       /* timer subdevice */
-       if (0) {
-               s->type = COMEDI_SUBD_TIMER;
-               s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
-               s->n_chan = 1;
-               s->maxdata = 0xff;
-               s->range_table = &range_unknown;
-               s->insn_read = das16cs_timer_insn_read;
-               s->insn_config = das16cs_timer_insn_config;
-       } else {
-               s->type = COMEDI_SUBD_UNUSED;
-       }
-
-
-       return 1;
-}
-
-static void das16cs_detach(struct comedi_device *dev)
-{
-       if (dev->irq)
-               free_irq(dev->irq, dev);
-}
-
 static irqreturn_t das16cs_interrupt(int irq, void *d)
 {
        /* struct comedi_device *dev = d; */
@@ -613,6 +460,128 @@ static int das16cs_timer_insn_config(struct comedi_device *dev,
        return -EINVAL;
 }
 
+static const struct das16cs_board *das16cs_probe(struct comedi_device *dev,
+                                                struct pcmcia_device *link)
+{
+       int i;
+
+       for (i = 0; i < n_boards; i++) {
+               if (das16cs_boards[i].device_id == link->card_id)
+                       return das16cs_boards + i;
+       }
+
+       dev_dbg(dev->class_dev, "unknown board!\n");
+
+       return NULL;
+}
+
+static int das16cs_attach(struct comedi_device *dev,
+                         struct comedi_devconfig *it)
+{
+       struct pcmcia_device *link;
+       struct comedi_subdevice *s;
+       int ret;
+       int i;
+
+       dev_dbg(dev->class_dev, "cb_das16_cs: attach\n");
+
+       link = cur_dev;         /* XXX hack */
+       if (!link)
+               return -EIO;
+
+       dev->iobase = link->resource[0]->start;
+       dev_dbg(dev->class_dev, "I/O base=0x%04lx\n", dev->iobase);
+
+       dev_dbg(dev->class_dev, "fingerprint:\n");
+       for (i = 0; i < 48; i += 2)
+               dev_dbg(dev->class_dev, "%04x\n", inw(dev->iobase + i));
+
+
+       ret = request_irq(link->irq, das16cs_interrupt,
+                         IRQF_SHARED, "cb_das16_cs", dev);
+       if (ret < 0)
+               return ret;
+
+       dev->irq = link->irq;
+
+       dev_dbg(dev->class_dev, "irq=%u\n", dev->irq);
+
+       dev->board_ptr = das16cs_probe(dev, link);
+       if (!dev->board_ptr)
+               return -EIO;
+
+       dev->board_name = thisboard->name;
+
+       if (alloc_private(dev, sizeof(struct das16cs_private)) < 0)
+               return -ENOMEM;
+
+       ret = comedi_alloc_subdevices(dev, 4);
+       if (ret)
+               return ret;
+
+       s = dev->subdevices + 0;
+       dev->read_subdev = s;
+       /* analog input subdevice */
+       s->type = COMEDI_SUBD_AI;
+       s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_DIFF | SDF_CMD_READ;
+       s->n_chan = 16;
+       s->maxdata = 0xffff;
+       s->range_table = &das16cs_ai_range;
+       s->len_chanlist = 16;
+       s->insn_read = das16cs_ai_rinsn;
+       s->do_cmd = das16cs_ai_cmd;
+       s->do_cmdtest = das16cs_ai_cmdtest;
+
+       s = dev->subdevices + 1;
+       /* analog output subdevice */
+       if (thisboard->n_ao_chans) {
+               s->type = COMEDI_SUBD_AO;
+               s->subdev_flags = SDF_WRITABLE;
+               s->n_chan = thisboard->n_ao_chans;
+               s->maxdata = 0xffff;
+               s->range_table = &range_bipolar10;
+               s->insn_write = &das16cs_ao_winsn;
+               s->insn_read = &das16cs_ao_rinsn;
+       }
+
+       s = dev->subdevices + 2;
+       /* digital i/o subdevice */
+       if (1) {
+               s->type = COMEDI_SUBD_DIO;
+               s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
+               s->n_chan = 8;
+               s->maxdata = 1;
+               s->range_table = &range_digital;
+               s->insn_bits = das16cs_dio_insn_bits;
+               s->insn_config = das16cs_dio_insn_config;
+       } else {
+               s->type = COMEDI_SUBD_UNUSED;
+       }
+
+       s = dev->subdevices + 3;
+       /* timer subdevice */
+       if (0) {
+               s->type = COMEDI_SUBD_TIMER;
+               s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
+               s->n_chan = 1;
+               s->maxdata = 0xff;
+               s->range_table = &range_unknown;
+               s->insn_read = das16cs_timer_insn_read;
+               s->insn_config = das16cs_timer_insn_config;
+       } else {
+               s->type = COMEDI_SUBD_UNUSED;
+       }
+
+
+       return 1;
+}
+
+static void das16cs_detach(struct comedi_device *dev)
+{
+       if (dev->irq)
+               free_irq(dev->irq, dev);
+}
+
 static struct comedi_driver driver_das16cs = {
        .driver_name    = "cb_das16_cs",
        .module         = THIS_MODULE,