[PATCH 19/90] staging: comedi: adv_pci1710: move comedi_pci_enable() into the attach

[PATCH 19/90] staging: comedi: adv_pci1710: move comedi_pci_enable() into the attach

[H Hartley Sweeten]

Use pci_is_enabled() in the "find pci device" function to determine if
the found pci device is not in use and move the comedi_pci_enable() call
into the attach.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/staging/comedi/drivers/adv_pci1710.c | 15 ++++++---------
 1 file changed, 6 insertions(+), 9 deletions(-)

diff --git a/drivers/staging/comedi/drivers/adv_pci1710.c b/drivers/staging/comedi/drivers/adv_pci1710.c
index 5eecf6b..33dd1db 100644
--- a/drivers/staging/comedi/drivers/adv_pci1710.c
+++ b/drivers/staging/comedi/drivers/adv_pci1710.c
@@ -1350,6 +1350,8 @@ static struct pci_dev *pci1710_find_pci_dev(struct comedi_device *dev,
 		}
 		if (pcidev->vendor != PCI_VENDOR_ID_ADVANTECH)
 			continue;
+		if (pci_is_enabled(pcidev))
+			continue;
 
 		if (strcmp(this_board->name, DRV_NAME) == 0) {
 			for (i = 0; i < ARRAY_SIZE(boardtypes); ++i) {
@@ -1364,15 +1366,6 @@ static struct pci_dev *pci1710_find_pci_dev(struct comedi_device *dev,
 			if (pcidev->device != boardtypes[board_index].device_id)
 				continue;
 		}
-
-		/*
-		 * Look for device that isn't in use.
-		 * Enable PCI device and request regions.
-		 */
-		if (comedi_pci_enable(pcidev, DRV_NAME)) {
-			continue;
-		}
-		/*  fixup board_ptr in case we were using the dummy entry with the driver name */
 		dev->board_ptr = &boardtypes[board_index];
 		return pcidev;
 	}
@@ -1399,6 +1392,10 @@ static int pci1710_attach(struct comedi_device *dev,
 	if (!devpriv->pcidev)
 		return -EIO;
 
+	ret = comedi_pci_enable(devpriv->pcidev, DRV_NAME);
+	if (ret)
+		return ret;
+
 	dev->iobase = pci_resource_start(devpriv->pcidev, 2);
 	irq = devpriv->pcidev->irq;
 
-- 
1.7.11

Re: [PATCH 19/90] staging: comedi: adv_pci1710: move comedi_pci_enable() into the attach

[Ian Abbott]

On 2012-07-19 02:32, H Hartley Sweeten wrote:
> Use pci_is_enabled() in the "find pci device" function to determine if
> the found pci device is not in use and move the comedi_pci_enable() call
> into the attach.

As mentioned in my reply to your equivalent patch for adv_pci1723, you 
should remove the pci_is_enabled() test for the same reason.

-- 
-=( Ian Abbott @ MEV Ltd.    E-mail: <abbotti@mev.co.uk>        )=-
-=( Tel: +44 (0)161 477 1898   FAX: +44 (0)161 718 3587         )=-