drm/i915/gvt: remove unused parameter for hypervisor's host_exit call

The parameter 'void *gvt' is not used and required for hypervisor's
exit call. Even for non-merged Xen hypervisor support. So just remove it.

Reviewed-by: Yuan, Hang <hang.yuan@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>

drivers/gpu/drm/i915/gvt/gvt.c

@@ -316,7 +316,7 @@ void intel_gvt_clean_device(struct drm_i915_private *dev_priv)
 		return;
 
 	intel_gvt_destroy_idle_vgpu(gvt->idle_vgpu);
-	intel_gvt_hypervisor_host_exit(&dev_priv->drm.pdev->dev, gvt);
+	intel_gvt_hypervisor_host_exit(&dev_priv->drm.pdev->dev);
 	intel_gvt_cleanup_vgpu_type_groups(gvt);
 	intel_gvt_clean_vgpu_types(gvt);
 

drivers/gpu/drm/i915/gvt/hypercall.h

@@ -39,7 +39,7 @@
  */
 struct intel_gvt_mpt {
 	int (*host_init)(struct device *dev, void *gvt, const void *ops);
-	void (*host_exit)(struct device *dev, void *gvt);
+	void (*host_exit)(struct device *dev);
 	int (*attach_vgpu)(void *vgpu, unsigned long *handle);
 	void (*detach_vgpu)(unsigned long handle);
 	int (*inject_msi)(unsigned long handle, u32 addr, u16 data);

drivers/gpu/drm/i915/gvt/kvmgt.c

@@ -1467,7 +1467,7 @@ static int kvmgt_host_init(struct device *dev, void *gvt, const void *ops)
 	return mdev_register_device(dev, &intel_vgpu_ops);
 }
 
-static void kvmgt_host_exit(struct device *dev, void *gvt)
+static void kvmgt_host_exit(struct device *dev)
 {
 	mdev_unregister_device(dev);
 }

drivers/gpu/drm/i915/gvt/mpt.h

@@ -61,14 +61,13 @@ static inline int intel_gvt_hypervisor_host_init(struct device *dev,
 /**
  * intel_gvt_hypervisor_host_exit - exit GVT-g host side
  */
-static inline void intel_gvt_hypervisor_host_exit(struct device *dev,
-			void *gvt)
+static inline void intel_gvt_hypervisor_host_exit(struct device *dev)
 {
 	/* optional to provide */
 	if (!intel_gvt_host.mpt->host_exit)
 		return;
 
-	intel_gvt_host.mpt->host_exit(dev, gvt);
+	intel_gvt_host.mpt->host_exit(dev);
 }
 
 /**