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staging: comedi: amplc_pc263: store the pci_dev in the comedi_device

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Use the hw_dev pointer in the comedi_device struct to hold the
pci_dev instead of carrying it in the private data.

Since the pci_dev is no longer held in the provate data, we can
also cleanup the detach a bit. Remove the IS_ENABLED() tests in
the detach. If the pci_dev is non NULL it's a PCI device otherwise
it's an ISA device. Using IS_ENABLED() to omit the code paths
makes the code a bit confusing and doesn't save much.

Since the pci_dev was the only thing in the private data, remove
the struct, and it's allocation.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2012-07-18 18:40:01 -07:00 committed by Greg Kroah-Hartman
parent 1c16519fc2
commit 69fa3b755e
1 changed files with 9 additions and 31 deletions
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40
drivers/staging/comedi/drivers/amplc_pc263.c
View file

@ -93,15 +93,6 @@ static const struct pc263_board pc263_boards[] = {
#endif
};
/* this structure is for data unique to this hardware driver. If
several hardware drivers keep similar information in this structure,
feel free to suggest moving the variable to the struct comedi_device struct.
*/
struct pc263_private {
/* PCI device. */
struct pci_dev *pci_dev;
};
/*
* This function looks for a board matching the supplied PCI device.
*/
@ -193,7 +184,7 @@ static int pc263_do_insn_bits(struct comedi_device *dev,
static void pc263_report_attach(struct comedi_device *dev)
{
const struct pc263_board *thisboard = comedi_board(dev);
struct pc263_private *devpriv = dev->private;
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
char tmpbuf[40];
if (IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_ISA) &&
@ -202,7 +193,7 @@ static void pc263_report_attach(struct comedi_device *dev)
else if (IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_PCI) &&
thisboard->bustype == pci_bustype)
snprintf(tmpbuf, sizeof(tmpbuf), "(pci %s) ",
pci_name(devpriv->pci_dev));
pci_name(pcidev));
else
tmpbuf[0] = '\0';
dev_info(dev->class_dev, "%s %sattached\n", dev->board_name, tmpbuf);
@ -239,11 +230,11 @@ static int pc263_common_attach(struct comedi_device *dev, unsigned long iobase)
static int pc263_pci_common_attach(struct comedi_device *dev,
struct pci_dev *pci_dev)
{
struct pc263_private *devpriv = dev->private;
unsigned long iobase;
int ret;
devpriv->pci_dev = pci_dev;
comedi_set_hw_dev(dev, &pci_dev->dev);
ret = comedi_pci_enable(pci_dev, PC263_DRIVER_NAME);
if (ret < 0) {
dev_err(dev->class_dev,
@ -279,11 +270,6 @@ static int pc263_attach(struct comedi_device *dev, struct comedi_devconfig *it)
thisboard->bustype == pci_bustype) {
struct pci_dev *pci_dev;
ret = alloc_private(dev, sizeof(struct pc263_private));
if (ret < 0) {
dev_err(dev->class_dev, "error! out of memory!\n");
return ret;
}
pci_dev = pc263_find_pci_dev(dev, it);
if (!pci_dev)
return -EIO;
@ -302,18 +288,11 @@ static int pc263_attach(struct comedi_device *dev, struct comedi_devconfig *it)
static int __devinit pc263_attach_pci(struct comedi_device *dev,
struct pci_dev *pci_dev)
{
int ret;
if (!IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_PCI))
return -EINVAL;
dev_info(dev->class_dev, PC263_DRIVER_NAME ": attach pci %s\n",
pci_name(pci_dev));
ret = alloc_private(dev, sizeof(struct pc263_private));
if (ret < 0) {
dev_err(dev->class_dev, "error! out of memory!\n");
return ret;
}
dev->board_ptr = pc263_find_pci_board(pci_dev);
if (dev->board_ptr == NULL) {
dev_err(dev->class_dev, "BUG! cannot determine board type!\n");
@ -324,14 +303,13 @@ static int __devinit pc263_attach_pci(struct comedi_device *dev,
static void pc263_detach(struct comedi_device *dev)
{
struct pc263_private *devpriv = dev->private;
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
if (IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_PCI) && devpriv &&
devpriv->pci_dev) {
if (pcidev) {
if (dev->iobase)
comedi_pci_disable(devpriv->pci_dev);
pci_dev_put(devpriv->pci_dev);
} else if (IS_ENABLED(CONFIG_COMEDI_AMPLC_PC263_ISA)) {
comedi_pci_disable(pcidev);
pci_dev_put(pcidev);
} else {
if (dev->iobase)
release_region(dev->iobase, PC263_IO_SIZE);
}