staging: comedi: amplc_pci224: Change return type of pci224_find_pci()

pci224_find_pci() finds a supported PCI device, returning 0 on success
or -EIO on failure and returning the pointer to the PCI device via a
struct pci_dev ** parameter.  Change it to return the struct pci_dev *
on success or NULL on failure.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/amplc_pci224.c b/drivers/staging/comedi/drivers/amplc_pci224.c
index a07546e..4c41c28 100644 (file)
--- a/drivers/staging/comedi/drivers/amplc_pci224.c
+++ b/drivers/staging/comedi/drivers/amplc_pci224.c
@@ -1255,14 +1255,11 @@ static const struct pci224_board
  * This function looks for a PCI device matching the requested board name,
  * bus and slot.
  */
-static int
-pci224_find_pci(struct comedi_device *dev, int bus, int slot,
-               struct pci_dev **pci_dev_p)
+static struct pci_dev *
+pci224_find_pci(struct comedi_device *dev, int bus, int slot)
 {
        struct pci_dev *pci_dev = NULL;
 
-       *pci_dev_p = NULL;
-
        /* Look for matching PCI device. */
        for (pci_dev = pci_get_device(PCI_VENDOR_ID_AMPLICON, PCI_ANY_ID, NULL);
             pci_dev != NULL;
@@ -1289,8 +1286,7 @@ pci224_find_pci(struct comedi_device *dev, int bus, int slot,
                }
 
                /* Found a match. */
-               *pci_dev_p = pci_dev;
-               return 0;
+               return pci_dev;
        }
        /* No match found. */
        if (bus || slot) {
@@ -1301,7 +1297,7 @@ pci224_find_pci(struct comedi_device *dev, int bus, int slot,
                dev_err(dev->class_dev, "error! no %s found!\n",
                        thisboard->name);
        }
-       return -EIO;
+       return NULL;
 }
 
 static void pci224_report_attach(struct comedi_device *dev, unsigned int irq)
@@ -1488,9 +1484,9 @@ static int pci224_attach(struct comedi_device *dev, struct comedi_devconfig *it)
                return ret;
        }
 
-       ret = pci224_find_pci(dev, bus, slot, &pci_dev);
-       if (ret < 0)
-               return ret;
+       pci_dev = pci224_find_pci(dev, bus, slot);
+       if (pci_dev == NULL)
+               return -EIO;
 
        return pci224_attach_common(dev, pci_dev, it->options);
 }