[Intel-gfx] [PATCH] drm/i915: Clear pending reset requests during suspend

[Arun Siluvery]

Pending reset requests are cleared before suspending, they should be picked up
after resume when new work is submitted.

This is originally added as part of TDR patches for Gen8 from Tomas Elf which
are under review, as suggested by Chris this is extracted as a separate patch
as it can be useful now.

Cc: Mika Kuoppala <mika.kuoppala at intel.com>
Cc: Chris Wilson <chris at chris-wilson.co.uk>
Signed-off-by: Arun Siluvery <arun.siluvery at linux.intel.com>
---
 drivers/gpu/drm/i915/i915_drv.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index f17a2b0..09ed83e 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -594,6 +594,13 @@ static int i915_drm_suspend(struct drm_device *dev)
 		goto out;
 	}
 
+	/*
+	 * Clear any pending reset requests. They should be picked up
+	 * after resume when new work is submitted
+	 */
+	atomic_clear_mask(I915_RESET_IN_PROGRESS_FLAG,
+			  &dev_priv->gpu_error.reset_counter);
+
 	intel_guc_suspend(dev);
 
 	intel_suspend_gt_powersave(dev);
-- 
1.9.1