[PATCH 36/38] staging: comedi: ni_pcimio: use mite_alloc()

Ian Abbott abbotti at mev.co.uk
Fri Sep 14 16:34:33 UTC 2012


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 at mev.co.uk>
---
 drivers/staging/comedi/drivers/ni_pcimio.c | 22 +++++-----------------
 1 file changed, 5 insertions(+), 17 deletions(-)

diff --git a/drivers/staging/comedi/drivers/ni_pcimio.c b/drivers/staging/comedi/drivers/ni_pcimio.c
index 5237346..f284a90 100644
--- a/drivers/staging/comedi/drivers/ni_pcimio.c
+++ b/drivers/staging/comedi/drivers/ni_pcimio.c
@@ -1581,25 +1581,13 @@ static void pcimio_detach(struct comedi_device *dev)
 		mite_free_ring(devpriv->cdo_mite_ring);
 		mite_free_ring(devpriv->gpct_mite_ring[0]);
 		mite_free_ring(devpriv->gpct_mite_ring[1]);
-		if (devpriv->mite)
+		if (devpriv->mite) {
 			mite_unsetup(devpriv->mite);
+			mite_free(devpriv->mite);
+		}
 	}
 }
 
-/* FIXME: remove this when dynamic MITE allocation implemented. */
-static struct mite_struct *pcimio_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 ni_board_struct *
 pcimio_find_boardinfo(struct pci_dev *pcidev)
 {
@@ -1629,9 +1617,9 @@ static int __devinit pcimio_attach_pci(struct comedi_device *dev,
 	if (!dev->board_ptr)
 		return -ENODEV;
 
-	devpriv->mite = pcimio_find_mite(pcidev);
+	devpriv->mite = mite_alloc(pcidev);
 	if (!devpriv->mite)
-		return -ENODEV;
+		return -ENOMEM;
 
 	dev_dbg(dev->class_dev, "%s\n", boardtype.name);
 	dev->board_name = boardtype.name;
-- 
1.7.12




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