drm/i915: reset the GPU on context fini

It's the only way we know how to make the GPU actually forget about the
default context.

Signed-off-by: Ben Widawsky <ben@bwidawsk.net>

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 5d9e07ece3c2ca814f36dddf7cdd9e43627ca03f..f0bd30ab15514a41babc24945425811244d2c9ab 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -799,7 +799,7 @@ static int gen6_do_reset(struct drm_device *dev)
        return ret;
 }
 
-static int intel_gpu_reset(struct drm_device *dev)
+int intel_gpu_reset(struct drm_device *dev)
 {
        struct drm_i915_private *dev_priv = dev->dev_private;
        int ret = -ENODEV;

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 03e7f9e683e31076d0d0bdb0f793bbc122bc8729..6f29fd141ab0b24f4781a35738d338617d1c6b2b 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1184,6 +1184,7 @@ extern long i915_compat_ioctl(struct file *filp, unsigned int cmd,
 extern int i915_emit_box(struct drm_device *dev,
                         struct drm_clip_rect *box,
                         int DR1, int DR4);
+extern int intel_gpu_reset(struct drm_device *dev);
 extern int i915_reset(struct drm_device *dev);
 extern unsigned long i915_chipset_val(struct drm_i915_private *dev_priv);
 extern unsigned long i915_mch_val(struct drm_i915_private *dev_priv);

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 5642c4019b53183c4d8bc49cdd7db02e242e326c..6dc426a48b2d982ef434a2bba2c75d6534a903f8 100644 (file)
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -278,6 +278,8 @@ void i915_gem_context_fini(struct drm_device *dev)
        i915_gem_object_unpin(dev_priv->ring[RCS].default_context->obj);
 
        do_destroy(dev_priv->ring[RCS].default_context);
+
+       intel_gpu_reset(dev);
 }
 
 void i915_gem_context_open(struct drm_device *dev, struct drm_file *file)