[PATCH] drm: rcar-du: Simplify division/shift logic

[Geert Uytterhoeven]

"a / (1 << b)" == "a >> b".

No change in generated code.

Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
---
 drivers/gpu/drm/rcar-du/rcar_lvds.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c b/drivers/gpu/drm/rcar-du/rcar_lvds.c
index 72a272cfc11ee129..30afc1d3482a9670 100644
--- a/drivers/gpu/drm/rcar-du/rcar_lvds.c
+++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c
@@ -229,7 +229,7 @@ static void rcar_lvds_d3_e3_pll_calc(struct rcar_lvds *lvds, struct clk *clk,
 				 * the PLL, followed by a an optional fixed /7
 				 * divider.
 				 */
-				fout = fvco / (1 << e) / div7;
+				fout = (fvco >> e) / div7;
 				div = max(1UL, DIV_ROUND_CLOSEST(fout, target));
 				diff = abs(fout / div - target);
 
@@ -249,7 +249,7 @@ static void rcar_lvds_d3_e3_pll_calc(struct rcar_lvds *lvds, struct clk *clk,
 	}
 
 done:
-	output = fin * pll->pll_n / pll->pll_m / (1 << pll->pll_e)
+	output = (fin * pll->pll_n / pll->pll_m >> pll->pll_e)
 	       / div7 / pll->div;
 	error = (long)(output - target) * 10000 / (long)target;
 
-- 
2.25.1