• Rob Clark's avatar
    drm/msm: use upstream iommu · 944fc36c
    Rob Clark authored
    Downstream kernel IOMMU had a non-standard way of dealing with multiple
    devices and multiple ports/contexts.  We don't need that on upstream
    kernel, so rip out the crazy.
    
    Note that we have to move the pinning of the ringbuffer to after the
    IOMMU is attached.  No idea how that managed to work properly on the
    downstream kernel.
    
    For now, I am leaving the IOMMU port name stuff in place, to simplify
    things for folks trying to backport latest drm/msm to device kernels.
    Once we no longer have to care about pre-DT kernels, we can drop this
    and instead backport upstream IOMMU driver.
    Signed-off-by: default avatarRob Clark <robdclark@gmail.com>
    944fc36c
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