From 6b8819c811c2a80a7e5896b4d1e2580be825d590 Mon Sep 17 00:00:00 2001 From: Rob Clark Date: Wed, 11 Sep 2013 17:14:30 -0400 Subject: drm/msm: workaround for missing irq Occasionally we seem to miss an IRQ from the ME (microengine). I'm not entirely sure the root cause, but for now we can unwedge things by retiring from the hangcheck timer. Signed-off-by: Rob Clark --- drivers/gpu/drm/msm/msm_gpu.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/drm/msm/msm_gpu.c') diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index 10cc44324166..7ddcfbebb1f2 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -230,6 +230,8 @@ static void hangcheck_timer_reset(struct msm_gpu *gpu) static void hangcheck_handler(unsigned long data) { struct msm_gpu *gpu = (struct msm_gpu *)data; + struct drm_device *dev = gpu->dev; + struct msm_drm_private *priv = dev->dev_private; uint32_t fence = gpu->funcs->last_fence(gpu); if (fence != gpu->hangcheck_fence) { @@ -237,8 +239,6 @@ static void hangcheck_handler(unsigned long data) gpu->hangcheck_fence = fence; } else if (fence < gpu->submitted_fence) { /* no progress and not done.. hung! */ - struct drm_device *dev = gpu->dev; - struct msm_drm_private *priv = dev->dev_private; gpu->hangcheck_fence = fence; dev_err(dev->dev, "%s: hangcheck detected gpu lockup!\n", gpu->name); @@ -252,6 +252,9 @@ static void hangcheck_handler(unsigned long data) /* if still more pending work, reset the hangcheck timer: */ if (gpu->submitted_fence > gpu->hangcheck_fence) hangcheck_timer_reset(gpu); + + /* workaround for missing irq: */ + queue_work(priv->wq, &gpu->retire_work); } /* -- cgit v1.2.3