imx/clk-pllv1: fix wrong do_div() usage

do_div() is meant to be used with an unsigned dividend.

Signed-off-by: Nicolas Pitre <nico@linaro.org>

diff --git a/drivers/clk/imx/clk-pllv1.c b/drivers/clk/imx/clk-pllv1.c
index 8564e43..82fe366 100644 (file)
--- a/drivers/clk/imx/clk-pllv1.c
+++ b/drivers/clk/imx/clk-pllv1.c
@@ -52,7 +52,7 @@ static unsigned long clk_pllv1_recalc_rate(struct clk_hw *hw,
                unsigned long parent_rate)
 {
        struct clk_pllv1 *pll = to_clk_pllv1(hw);
-       long long ll;
+       unsigned long long ull;
        int mfn_abs;
        unsigned int mfi, mfn, mfd, pd;
        u32 reg;
@@ -94,16 +94,16 @@ static unsigned long clk_pllv1_recalc_rate(struct clk_hw *hw,
        rate = parent_rate * 2;
        rate /= pd + 1;
 
-       ll = (unsigned long long)rate * mfn_abs;
+       ull = (unsigned long long)rate * mfn_abs;
 
-       do_div(ll, mfd + 1);
+       do_div(ull, mfd + 1);
 
        if (mfn_is_negative(pll, mfn))
-               ll = -ll;
+               ull = (rate * mfi) - ull;
+       else
+               ull = (rate * mfi) + ull;
 
-       ll = (rate * mfi) + ll;
-
-       return ll;
+       return ull;
 }
 
 static struct clk_ops clk_pllv1_ops = {