drm/i915/vblank: Make the vblank counter u64 -> u32 typecast explicit

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

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 95d0e7a..cafb727 100644 (file)
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -12078,7 +12078,7 @@ u32 intel_crtc_get_vblank_counter(struct intel_crtc *crtc)
        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);
 }