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clk: optimize the divider walk in clk_divider_bestdiv()

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Because _next_div() returns a valid divider, there is no need to
consult _is_valid_div() for the validity of the divider in every
iteration.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Masahiro Yamada 2016-01-05 12:43:41 +09:00 committed by Stephen Boyd
parent 090341b0a9
commit 653d1452b4
1 changed files with 2 additions and 3 deletions
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5
drivers/clk/clk-divider.c
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@ -303,9 +303,8 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
*/ */
maxdiv = min(ULONG_MAX / rate, maxdiv); maxdiv = min(ULONG_MAX / rate, maxdiv);
for (i = 1; i <= maxdiv; i = _next_div(table, i, flags)) { for (i = _next_div(table, 0, flags); i <= maxdiv;
if (!_is_valid_div(table, i, flags)) i = _next_div(table, i, flags)) {
continue;
if (rate * i == parent_rate_saved) { if (rate * i == parent_rate_saved) {
/* /*
* It's the most ideal case if the requested rate can be * It's the most ideal case if the requested rate can be