• H Hartley Sweeten's avatar
    staging: comedi: comedi_pci: introduce comedi_pci_detach() · aac307f9
    H Hartley Sweeten authored
    Introduce a generic (*detach) function for comedi PCI drivers to handle
    the boilerplate code needed to detach a PCI driver.
    
    This function works similar to comedi_legacy_detach() where it will:
    
      * free the dev->irq if it has been requested
      * iounmap the dev->mmio addres if it has been ioremap'ed
    
    The helper then calls comedi_pci_disable() to release the regions and
    disable the PCI device.
    
    Use the new helper directly for the (*detach) in the following cases:
    
      * where comedi_pci_disable() is used directly for the (*detach)
      * where the detach function is just boilerplate
    
    Use the new helper in the (*detach) of the simpler PCI drivers. Call
    the helper after disabling interrupts (reset) and before any additional
    cleanup (kfree) to avoid any race conditions with the interrupt handler.
    Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
    Reviewed-by: default avatarIan Abbott <abbotti@mev.co.uk>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    aac307f9
amplc_pci230.c 84.8 KB