From: Jean Delvare <[email protected]> Subject: drm/i915: Optimize DIV_ROUND_CLOSEST call
DIV_ROUND_CLOSEST is faster if the compiler knows it will only be dealing with unsigned dividends. Signed-off-by: Jean Delvare <[email protected]> Cc: Guenter Roeck <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: David Airlie <[email protected]> --- Daniel, I think we can safely assume ia_freq can't be negative? drivers/gpu/drm/i915/intel_pm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- linux-3.6-rc3.orig/drivers/gpu/drm/i915/intel_pm.c 2012-08-28 14:46:22.000000000 +0200 +++ linux-3.6-rc3/drivers/gpu/drm/i915/intel_pm.c 2012-09-01 21:17:32.074619227 +0200 @@ -2499,7 +2499,8 @@ static void gen6_update_ring_freq(struct { struct drm_i915_private *dev_priv = dev->dev_private; int min_freq = 15; - int gpu_freq, ia_freq, max_ia_freq; + int gpu_freq; + unsigned int ia_freq, max_ia_freq; int scaling_factor = 180; WARN_ON(!mutex_is_locked(&dev->struct_mutex)); -- Jean Delvare _______________________________________________ dri-devel mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/dri-devel
