Avoid u32 overflow when calculate post divider setting, and
increase the max post divider setting from 3 (/8) to 4 (/16).
Signed-off-by: James Liao <jamesjj.l...@mediatek.com>
---
drivers/clk/mediatek/clk-pll.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/mediatek/clk-pll.c b/drivers/clk/mediatek/clk-pll.c
index 68af518..0e3f4ef 100644
--- a/drivers/clk/mediatek/clk-pll.c
+++ b/drivers/clk/mediatek/clk-pll.c
@@ -144,9 +144,9 @@ static void mtk_pll_calc_values(struct mtk_clk_pll *pll,
u32 *pcw, u32 *postdiv,
if (freq > pll->data->fmax)
freq = pll->data->fmax;
- for (val = 0; val < 4; val++) {
+ for (val = 0; val < 5; val++) {
*postdiv = 1 << val;
- if (freq * *postdiv >= fmin)
+ if ((u64)freq * *postdiv >= fmin)
break;
}
--
1.8.1.1.dirty
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
