The "jr3_pci" driver currently uses the `iobase` member of its private
device data `struct jr3_pci_dev_private` to store a pointer to its
ioremapped register region. Use the `mmio` member of the `struct
comedi_device` to store this instead, and remove the `iobase` member.
The `iobase` member was of type `struct jr3_t __iomem *`, with the
board's complicated register layout described by `struct jr3_t`. The
`mmio` member is a generic `void __iomem *`, so its value needs
converting to a `struct jr3_t __iomem *` for our purposes.
Change the clean-up in `jr3_pci_detach()` to call `comedi_pci_detach()`
instead of `comedi_pci_disable()`, as that will iounmap `dev->mmio` for
us.
Signed-off-by: Ian Abbott <abbo...@mev.co.uk>
---
drivers/staging/comedi/drivers/jr3_pci.c | 32 +++++++++++++++-----------------
1 file changed, 15 insertions(+), 17 deletions(-)
diff --git a/drivers/staging/comedi/drivers/jr3_pci.c
b/drivers/staging/comedi/drivers/jr3_pci.c
index 997f97089df8..297ec2f7ff34 100644
--- a/drivers/staging/comedi/drivers/jr3_pci.c
+++ b/drivers/staging/comedi/drivers/jr3_pci.c
@@ -95,7 +95,6 @@ struct jr3_pci_poll_delay {
};
struct jr3_pci_dev_private {
- struct jr3_t __iomem *iobase;
struct timer_list timer;
};
@@ -375,8 +374,7 @@ static int jr3_check_firmware(struct comedi_device *dev,
static void jr3_write_firmware(struct comedi_device *dev,
int subdev, const u8 *data, size_t size)
{
- struct jr3_pci_dev_private *devpriv = dev->private;
- struct jr3_t __iomem *iobase = devpriv->iobase;
+ struct jr3_t __iomem *iobase = dev->mmio;
u32 __iomem *lo;
u32 __iomem *hi;
int more = 1;
@@ -634,7 +632,7 @@ static void jr3_pci_poll_dev(unsigned long data)
static struct jr3_pci_subdev_private *
jr3_pci_alloc_spriv(struct comedi_device *dev, struct comedi_subdevice *s)
{
- struct jr3_pci_dev_private *devpriv = dev->private;
+ struct jr3_t __iomem *iobase = dev->mmio;
struct jr3_pci_subdev_private *spriv;
int j;
int k;
@@ -643,7 +641,7 @@ jr3_pci_alloc_spriv(struct comedi_device *dev, struct
comedi_subdevice *s)
if (!spriv)
return NULL;
- spriv->channel = &devpriv->iobase->channel[s->index].data;
+ spriv->channel = &iobase->channel[s->index].data;
for (j = 0; j < 8; j++) {
spriv->range[j].l.length = 1;
@@ -665,17 +663,17 @@ jr3_pci_alloc_spriv(struct comedi_device *dev, struct
comedi_subdevice *s)
spriv->maxdata_list[57] = 0xffff;
dev_dbg(dev->class_dev, "p->channel %p %p (%tx)\n",
- spriv->channel, devpriv->iobase,
+ spriv->channel, iobase,
((char __iomem *)spriv->channel -
- (char __iomem *)devpriv->iobase));
+ (char __iomem *)iobase));
return spriv;
}
static void jr3_pci_show_copyright(struct comedi_device *dev)
{
- struct jr3_pci_dev_private *devpriv = dev->private;
- struct jr3_channel __iomem *ch0data = &devpriv->iobase->channel[0].data;
+ struct jr3_t __iomem *iobase = dev->mmio;
+ struct jr3_channel __iomem *ch0data = &iobase->channel[0].data;
char copy[ARRAY_SIZE(ch0data->copyright) + 1];
int i;
@@ -692,6 +690,7 @@ static int jr3_pci_auto_attach(struct comedi_device *dev,
static const struct jr3_pci_board *board;
struct jr3_pci_dev_private *devpriv;
struct jr3_pci_subdev_private *spriv;
+ struct jr3_t __iomem *iobase;
struct comedi_subdevice *s;
int ret;
int i;
@@ -718,10 +717,12 @@ static int jr3_pci_auto_attach(struct comedi_device *dev,
if (ret)
return ret;
- devpriv->iobase = pci_ioremap_bar(pcidev, 0);
- if (!devpriv->iobase)
+ dev->mmio = pci_ioremap_bar(pcidev, 0);
+ if (!dev->mmio)
return -ENOMEM;
+ iobase = dev->mmio;
+
ret = comedi_alloc_subdevices(dev, board->n_subdevs);
if (ret)
return ret;
@@ -745,7 +746,7 @@ static int jr3_pci_auto_attach(struct comedi_device *dev,
/* Reset DSP card */
for (i = 0; i < dev->n_subdevices; i++)
- writel(0, &devpriv->iobase->channel[i].reset);
+ writel(0, &iobase->channel[i].reset);
ret = comedi_load_firmware(dev, &comedi_to_pci_dev(dev)->dev,
"comedi/jr3pci.idm",
@@ -789,13 +790,10 @@ static void jr3_pci_detach(struct comedi_device *dev)
{
struct jr3_pci_dev_private *devpriv = dev->private;
- if (devpriv) {
+ if (devpriv)
del_timer_sync(&devpriv->timer);
- if (devpriv->iobase)
- iounmap(devpriv->iobase);
- }
- comedi_pci_disable(dev);
+ comedi_pci_detach(dev);
}
static struct comedi_driver jr3_pci_driver = {
--
2.11.0
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