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staging: comedi: ni_labpc_common: move comedi_alloc_devpriv() to common code 

The ni_labpc_common module is used by the ni_labpc, ni_labpc_pci, and ni_labpc_cs
drivers to provide the common code support. Those drivers currently all call
comedi_alloc_devpriv() to allocate the private data before calling the common
attach function.

For aesthetics, move the private data allocation into the common code.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten 2015-01-21 15:11:44 -07:00 committed by Greg Kroah-Hartman
parent c0e4a8decb
commit 83d682bda1
4 changed files with 5 additions and 16 deletions
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5
drivers/staging/comedi/drivers/ni_labpc.c
View File

@ -84,15 +84,10 @@ static const struct labpc_boardinfo labpc_boards[] = {
static int labpc_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{
struct labpc_private *devpriv;
unsigned int irq = it->options[1];
unsigned int dma_chan = it->options[2];
int ret;
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
return -ENOMEM;
ret = comedi_request_region(dev, it->options[0], 0x20);
if (ret)
return ret;

6
drivers/staging/comedi/drivers/ni_labpc_common.c
View File

@ -1215,11 +1215,15 @@ int labpc_common_attach(struct comedi_device *dev,
unsigned int irq, unsigned long isr_flags)
{
const struct labpc_boardinfo *board = dev->board_ptr;
struct labpc_private *devpriv = dev->private;
struct labpc_private *devpriv;
struct comedi_subdevice *s;
int ret;
int i;
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
return -ENOMEM;
if (dev->mmio) {
devpriv->read_byte = labpc_readb;
devpriv->write_byte = labpc_writeb;

5
drivers/staging/comedi/drivers/ni_labpc_cs.c
View File

@ -80,7 +80,6 @@ static int labpc_auto_attach(struct comedi_device *dev,
unsigned long context)
{
struct pcmcia_device *link = comedi_to_pcmcia_dev(dev);
struct labpc_private *devpriv;
int ret;
/* The ni_labpc driver needs the board_ptr */
@ -96,10 +95,6 @@ static int labpc_auto_attach(struct comedi_device *dev,
if (!link->irq)
return -EINVAL;
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
return -ENOMEM;
return labpc_common_attach(dev, link->irq, IRQF_SHARED);
}

5
drivers/staging/comedi/drivers/ni_labpc_pci.c
View File

@ -79,7 +79,6 @@ static int labpc_pci_auto_attach(struct comedi_device *dev,
{
struct pci_dev *pcidev = comedi_to_pci_dev(dev);
const struct labpc_boardinfo *board = NULL;
struct labpc_private *devpriv;
int ret;
if (context < ARRAY_SIZE(labpc_pci_boards))
@ -101,10 +100,6 @@ static int labpc_pci_auto_attach(struct comedi_device *dev,
if (!dev->mmio)
return -ENOMEM;
devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
if (!devpriv)
return -ENOMEM;
return labpc_common_attach(dev, pcidev->irq, IRQF_SHARED);
}