drm: Simplify the math in drm_calc_timestamping_constants()
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Sat, 26 Oct 2013 14:11:01 +0000 (17:11 +0300)
committerVille Syrjälä <ville.syrjala@linux.intel.com>
Mon, 20 Jan 2014 09:06:01 +0000 (11:06 +0200)
commit0dae35a3886c883bf993c8776dafd8a3bb2fef44
tree57c09a365ea2b583834c2415e1faadd1083ad440
parent21b21560e9f7be6c3f415dfd7a840f72a250255c
drm: Simplify the math in drm_calc_timestamping_constants()

drm_calc_timestamping_constants() makes the math more complex
than necessary.
- multipying the dotclock by 1000 is pointless, just makes all the
  numbers bigger
- div64_u64() is also pointless, div_u64 is enough
- pixeldur_ns doesn't need any 64bit math

Reviewed-by: mario.kleiner.de@gmail.com
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
drivers/gpu/drm/drm_irq.c
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