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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 <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>