[Intel-gfx] [PATCH 1/2] drm/i915/gen9: don't call skl_pipe_pixel_rate() twice on the same function

[Paulo Zanoni]

One day this function will have a complete implementation which won't
be a simple one-line return, so avoid unnecessarily calling it when we
can just store the value in a variable.

Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index fe6c1c6..3a6df2f 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3739,14 +3739,18 @@ skl_compute_wm_level(const struct drm_i915_private *dev_priv,
 static uint32_t
 skl_compute_linetime_wm(struct intel_crtc_state *cstate)
 {
+	uint32_t pixel_rate;
+
 	if (!cstate->base.active)
 		return 0;
 
-	if (WARN_ON(skl_pipe_pixel_rate(cstate) == 0))
+	pixel_rate = skl_pipe_pixel_rate(cstate);
+
+	if (WARN_ON(pixel_rate == 0))
 		return 0;
 
 	return DIV_ROUND_UP(8 * cstate->base.adjusted_mode.crtc_htotal * 1000,
-			    skl_pipe_pixel_rate(cstate));
+			    pixel_rate);
 }
 
 static void skl_compute_transition_wm(struct intel_crtc_state *cstate,
-- 
2.7.4