int intel_gpu_reset(struct drm_device *dev)
{
+ struct drm_i915_private *dev_priv = to_i915(dev);
int (*reset)(struct drm_device *);
+ int ret;
reset = intel_get_gpu_reset(dev);
if (reset == NULL)
return -ENODEV;
- return reset(dev);
+ /* If the power well sleeps during the reset, the reset
+ * request may be dropped and never completes (causing -EIO).
+ */
+ intel_uncore_forcewake_get(dev_priv, FORCEWAKE_ALL);
+ ret = reset(dev);
+ intel_uncore_forcewake_put(dev_priv, FORCEWAKE_ALL);
+
+ return ret;
}
bool intel_has_gpu_reset(struct drm_device *dev)