clk: sprd: fix to get a correct ibias of pll

The current driver is getting a wrong ibias index of pll clocks from
number 1. This patch fix that issue, then getting ibias index from 0.

Fixes: 3e37b005580b ("clk: sprd: add adjustable pll support")
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Link: https://lkml.kernel.org/r/20200330021640.14133-1-zhang.lyra@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/sprd/pll.c b/drivers/clk/sprd/pll.c
index 640270f..1579148 100644 (file)
--- a/drivers/clk/sprd/pll.c
+++ b/drivers/clk/sprd/pll.c
@@ -87,11 +87,12 @@ static u32 pll_get_ibias(u64 rate, const u64 *table)
 {
        u32 i, num = table[0];
 
-       for (i = 1; i < num + 1; i++)
-               if (rate <= table[i])
+       /* table[0] indicates the number of items in this table */
+       for (i = 0; i < num; i++)
+               if (rate <= table[i + 1])
                        break;
 
-       return (i == num + 1) ? num : i;
+       return i == num ? num - 1 : i;
 }
 
 static unsigned long _sprd_pll_recalc_rate(const struct sprd_pll *pll,