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    SubjectRe: [PATCH] PCI and I2C fixes for 2.6.8
    ChangeSet 1.1807.56.19, 2004/08/05 15:34:23-07:00,

    [PATCH] PCI: Document pci_disable_device()

    Add documentation for pci_disable_device(). We don't actually
    deallocate IRQ resources in pci_disable_device() yet, but I suspect
    we'll need to do so soon.

    Signed-off-by: Bjorn Helgaas <>
    Signed-off-by: Greg Kroah-Hartman <>

    Documentation/pci.txt | 11 +++++++++--
    1 files changed, 9 insertions(+), 2 deletions(-)

    diff -Nru a/Documentation/pci.txt b/Documentation/pci.txt
    --- a/Documentation/pci.txt 2004-08-23 11:05:10 -07:00
    +++ b/Documentation/pci.txt 2004-08-23 11:05:10 -07:00
    @@ -25,6 +25,7 @@
    Discover resources (addresses and IRQ numbers) provided by the device
    Allocate these resources
    Communicate with the device
    + Disable the device

    Most of these topics are covered by the following sections, for the rest
    look at <linux/pci.h>, it's hopefully well commented.
    @@ -162,8 +163,8 @@
    count on these devices by calling pci_dev_put().

    -3. Enabling devices
    +3. Enabling and disabling devices
    Before you do anything with the device you've found, you need to enable
    it by calling pci_enable_device() which enables I/O and memory regions of
    the device, allocates an IRQ if necessary, assigns missing resources if
    @@ -179,6 +180,12 @@
    and also ensures that the cache line size register is set correctly.
    Make sure to check the return value of pci_set_mwi(), not all architectures
    may support Memory-Write-Invalidate.
    + If your driver decides to stop using the device (e.g., there was an
    +error while setting it up or the driver module is being unloaded), it
    +should call pci_disable_device() to deallocate any IRQ resources, disable
    +PCI bus-mastering, etc. You should not do anything with the device after
    +calling pci_disable_device().

    4. How to access PCI config space
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