From: Thierry Reding <treding@nvidia.com>
Date: Fri, 14 Mar 2014 13:20:42 +0000 (+0100)
Subject: drm/tegra: dsi - Do not needlessly recompute pclk
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=76245adbc149170999340a61d171e29b86b02218;p=deliverable%2Flinux.git

drm/tegra: dsi - Do not needlessly recompute pclk

In some cases the pixel clock used to not be correct, which is why it
had to be recomputed. It turns out that the reason why it wasn't correct
is that it was used wrongly. If used correctly there's not need for the
recomputation.

Signed-off-by: Thierry Reding <treding@nvidia.com>
---

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index beab9c85db92..3838575f71c6 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -602,7 +602,6 @@ static int tegra_output_dsi_setup_clock(struct tegra_output *output,
 	DRM_DEBUG_KMS("vrefresh: %u\n", vrefresh);
 
 	/* compute byte clock */
-	pclk = mode->htotal * mode->vtotal * vrefresh;
 	bclk = (pclk * mul) / (div * dsi->lanes);
 
 	/*