clk: always pass parent_rate into .round_rate

The parent_rate will likely be used by most .round_rate implementation
no matter whether flag CLK_SET_RATE_PARENT is set or not, so let's
always pass parent_rate into .round_rate.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>

1 files changed, 3 insertions, 9 deletions

diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
index 5fc541d017f1..03b127c0313b 100644
--- a/drivers/clk/clk-divider.c
+++ b/drivers/clk/clk-divider.c
@@ -67,8 +67,8 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
         if (divider->flags & CLK_DIVIDER_ONE_BASED)
                 maxdiv--;
 
-        if (!best_parent_rate) {
-                parent_rate = __clk_get_rate(__clk_get_parent(hw->clk));
+        if (!(__clk_get_flags(hw->clk) & CLK_SET_RATE_PARENT)) {
+                parent_rate = *best_parent_rate;
                 bestdiv = DIV_ROUND_UP(parent_rate, rate);
                 bestdiv = bestdiv == 0 ? 1 : bestdiv;
                 bestdiv = bestdiv > maxdiv ? maxdiv : bestdiv;
@@ -108,13 +108,7 @@ static long clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
         int div;
         div = clk_divider_bestdiv(hw, rate, prate);
 
-        if (prate)
-                return *prate / div;
-        else {
-                unsigned long r;
-                r = __clk_get_rate(__clk_get_parent(hw->clk));
-                return r / div;
-        }
+        return *prate / div;
 }
 
 static int clk_divider_set_rate(struct clk_hw *hw, unsigned long rate)