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    Subject[PATCH 01/12] HACK: increase timeout for drm_atomic_helper_wait_for_vblanks
    Date
    From: Quentin Schulz <quentin.schulz@free-electrons.com>

    Due to the DP IP being simulated in a different and way slower way than
    the rest of the hardware, increase the timeout in
    drm_atomic_helper_wait_for_vblanks so that we don't miss the vblank
    event.

    Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
    Signed-off-by: Damian Kos <dkos@cadence.com>
    ---
    drivers/gpu/drm/drm_atomic_helper.c | 2 +-
    1 files changed, 1 insertions(+), 1 deletions(-)

    diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
    index c356545..0171249 100644
    --- a/drivers/gpu/drm/drm_atomic_helper.c
    +++ b/drivers/gpu/drm/drm_atomic_helper.c
    @@ -1345,7 +1345,7 @@ int drm_atomic_helper_wait_for_fences(struct drm_device *dev,
    ret = wait_event_timeout(dev->vblank[i].queue,
    old_state->crtcs[i].last_vblank_count !=
    drm_crtc_vblank_count(crtc),
    - msecs_to_jiffies(50));
    + msecs_to_jiffies(4000));

    WARN(!ret, "[CRTC:%d:%s] vblank wait timed out\n",
    crtc->base.id, crtc->name);
    --
    1.7.1
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