staging: comedi: ni_pcidio: use mite_alloc()

Allocate `struct mite_device` dynamically instead of searching for
one on the `mite_devices` list constructed by the "mite" module.

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

diff --git a/drivers/staging/comedi/drivers/ni_pcidio.c b/drivers/staging/comedi/drivers/ni_pcidio.c
index 778a005..acbed13 100644 (file)
--- a/drivers/staging/comedi/drivers/ni_pcidio.c
+++ b/drivers/staging/comedi/drivers/ni_pcidio.c
@@ -1103,20 +1103,6 @@ static int pci_6534_upload_firmware(struct comedi_device *dev)
        return ret;
 }
 
-/* FIXME: remove this when dynamic MITE allocation implemented. */
-static struct mite_struct *nidio_find_mite(struct pci_dev *pcidev)
-{
-       struct mite_struct *mite;
-
-       for (mite = mite_devices; mite; mite = mite->next) {
-               if (mite->used)
-                       continue;
-               if (mite->pcidev == pcidev)
-                       return mite;
-       }
-       return NULL;
-}
-
 static const struct nidio_board *
 nidio_find_boardinfo(struct pci_dev *pcidev)
 {
@@ -1146,9 +1132,9 @@ static int __devinit nidio_attach_pci(struct comedi_device *dev,
        dev->board_ptr = nidio_find_boardinfo(pcidev);
        if (!dev->board_ptr)
                return -ENODEV;
-       devpriv->mite = nidio_find_mite(pcidev);
+       devpriv->mite = mite_alloc(pcidev);
        if (!devpriv->mite)
-               return -ENODEV;
+               return -ENOMEM;
 
        ret = mite_setup(devpriv->mite);
        if (ret < 0) {
@@ -1223,8 +1209,10 @@ static void nidio_detach(struct comedi_device *dev)
                        mite_free_ring(devpriv->di_mite_ring);
                        devpriv->di_mite_ring = NULL;
                }
-               if (devpriv->mite)
+               if (devpriv->mite) {
                        mite_unsetup(devpriv->mite);
+                       mite_free(devpriv->mite);
+               }
        }
 }