clk: sunxi: Fix M factor computation for APB1
commit ac95330b upstream. commit cfa63688 ("clk: sunxi: factors: Consolidate get_factors parameters into a struct") introduced a regression for m factor computation in sun4i_get_apb1_factors function. The old code reassigned the "parent_rate" parameter to the targeted divisor value and was buggy for the returned frequency but not for the computed factors. Now, returned frequency is good but m factor is incorrectly computed (its max value 31 is always set resulting in a significantly slower frequency than the requested one...) This patch simply restores the original proper computation for m while keeping the good changes for returned rate. Fixes: cfa63688 ("clk: sunxi: factors: Consolidate get_factors parameters into a struct") Signed-off-by: Stéphan Rafin <stephan@soliotek.com> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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