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    Subject[PATCH 10/29] drivers: add DRIVER_HAS_OWN_IOMMU_MANAGER flag
    Date
    This patch adds a new flags for device drivers. This flag instructs
    kernel that the device driver does it own management of IOMMU assisted
    IO address space translations, so no default dma-mapping structures
    should be initialized.

    Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
    ---
    include/linux/device.h | 2 ++
    1 file changed, 2 insertions(+)

    diff --git a/include/linux/device.h b/include/linux/device.h
    index 5f4ff02..2e62371 100644
    --- a/include/linux/device.h
    +++ b/include/linux/device.h
    @@ -253,6 +253,8 @@ struct device_driver {

    /* disables bind/unbind via sysfs */
    #define DRIVER_SUPPRESS_BIND_ATTRS (1 << 0)
    +/* driver uses own methods to manage IO address space */
    +#define DRIVER_HAS_OWN_IOMMU_MANAGER (1 << 1)

    extern int __must_check driver_register(struct device_driver *drv);
    extern void driver_unregister(struct device_driver *drv);
    --
    1.9.2


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