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clk: simplify clk_fetch_parent_index() function 

The clk_core_get_parent_by_index can be used as a helper function
to simplify the implementation of clk_fetch_parent_index().

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This commit is contained in:
Masahiro Yamada 2015-12-28 19:23:09 +09:00 committed by Stephen Boyd
parent 508f884a66
commit 470b5e2f97
1 changed files with 2 additions and 16 deletions
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18
drivers/clk/clk.c
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@ -1069,24 +1069,10 @@ static int clk_fetch_parent_index(struct clk_core *core,
if (!parent)
return -EINVAL;
/*
* find index of new parent clock using cached parent ptrs,
* or if not yet cached, use string name comparison and cache
* them now to avoid future calls to clk_core_lookup.
*/
for (i = 0; i < core->num_parents; i++) {
if (core->parents[i] == parent)
for (i = 0; i < core->num_parents; i++)
if (clk_core_get_parent_by_index(core, i) == parent)
return i;
if (core->parents[i])
continue;
if (!strcmp(core->parent_names[i], parent->name)) {
core->parents[i] = clk_core_lookup(parent->name);
return i;
}
}
return -EINVAL;
}