From 138bec76296851e9bb151a451b2b324089cffdf2 Mon Sep 17 00:00:00 2001 From: Ian Abbott Date: Fri, 17 Feb 2017 11:09:18 +0000 Subject: [PATCH] staging: comedi: jr3_pci: replace devpriv->iobase with dev->mmio 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 Signed-off-by: Greg Kroah-Hartman --- 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 = { -- 2.20.1