From: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Date: Fri, 2 Feb 2018 21:12:54 -0800
Subject: drm/i915/vblank: Make the vblank counter u64 -> u32 typecast explicit
Git-commit: 734cbbf3e9234b9d6c1a71e1f3f85ed9c7f0e16b
Patch-mainline: v4.17-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Core returns a u64 vblank count and intel_crtc_get_vblank_counter()
expects a 32-bit value. Make the typecast explicit to add clarity.

Cc: Keith Packard <keithp@keithp.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180203051302.9974-2-dhinakaran.pandiyan@intel.com

Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/i915/intel_display.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12087,7 +12087,7 @@ u32 intel_crtc_get_vblank_counter(struct
 	struct drm_device *dev = crtc->base.dev;
 
 	if (!dev->max_vblank_count)
-		return drm_crtc_accurate_vblank_count(&crtc->base);
+		return (u32)drm_crtc_accurate_vblank_count(&crtc->base);
 
 	return dev->driver->get_vblank_counter(dev, crtc->pipe);
 }