Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-23 20:51:44 +00:00
Code Issues Packages Projects Releases Wiki Activity

clk: optimize the divider walk in clk_divider_bestdiv()

Browse Source 
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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/clk/clk-divider.c
View File

@ -303,9 +303,8 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate,
*/
maxdiv = min(ULONG_MAX / rate, maxdiv);
for (i = 1; i <= maxdiv; i = _next_div(table, i, flags)) {
if (!_is_valid_div(table, i, flags))
continue;
for (i = _next_div(table, 0, flags); i <= maxdiv;
i = _next_div(table, i, flags)) {
if (rate * i == parent_rate_saved) {
/*
* It's the most ideal case if the requested rate can be