• Ben Widawsky's avatar
    drm/i915: drop polled waits from i915_wait_request · c58cf4f1
    Ben Widawsky authored
    
    
    The only time irq_get should fail is during unload or suspend. Both of
    these points should try to quiesce the GPU before disabling interrupts
    and so the atomic polling should never occur.
    
    This was recommended by Chris Wilson as a way of reducing added
    complexity to the polled wait which I introduced in an RFC patch.
    
    09:57 < ickle_> it's only there as a fudge for waiting after irqs
    after uninstalled during s&r, we aren't actually meant to hit it
    09:57 < ickle_> so maybe we should just kill the code there and fix the breakage
    
    v2: return -ENODEV instead of -EBUSY when irq_get fails
    Signed-off-by: default avatarBen Widawsky <ben@bwidawsk.net>
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    c58cf4f1