diff options
Diffstat (limited to 'drivers/clk/zynqmp')
| -rw-r--r-- | drivers/clk/zynqmp/divider.c | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/clk/zynqmp/divider.c b/drivers/clk/zynqmp/divider.c index 5c41ddbee646..f7b35459ad0b 100644 --- a/drivers/clk/zynqmp/divider.c +++ b/drivers/clk/zynqmp/divider.c @@ -111,23 +111,30 @@ static unsigned long zynqmp_clk_divider_recalc_rate(struct clk_hw *hw, static void zynqmp_get_divider2_val(struct clk_hw *hw, unsigned long rate, - unsigned long parent_rate, struct zynqmp_clk_divider *divider, int *bestdiv) { int div1; int div2; long error = LONG_MAX; - struct clk_hw *parent_hw = clk_hw_get_parent(hw); - struct zynqmp_clk_divider *pdivider = to_zynqmp_clk_divider(parent_hw); + unsigned long div1_prate; + struct clk_hw *div1_parent_hw; + struct clk_hw *div2_parent_hw = clk_hw_get_parent(hw); + struct zynqmp_clk_divider *pdivider = + to_zynqmp_clk_divider(div2_parent_hw); if (!pdivider) return; + div1_parent_hw = clk_hw_get_parent(div2_parent_hw); + if (!div1_parent_hw) + return; + + div1_prate = clk_hw_get_rate(div1_parent_hw); *bestdiv = 1; for (div1 = 1; div1 <= pdivider->max_div;) { for (div2 = 1; div2 <= divider->max_div;) { - long new_error = ((parent_rate / div1) / div2) - rate; + long new_error = ((div1_prate / div1) / div2) - rate; if (abs(new_error) < abs(error)) { *bestdiv = div2; @@ -192,7 +199,7 @@ static long zynqmp_clk_divider_round_rate(struct clk_hw *hw, */ if (div_type == TYPE_DIV2 && (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT)) { - zynqmp_get_divider2_val(hw, rate, *prate, divider, &bestdiv); + zynqmp_get_divider2_val(hw, rate, divider, &bestdiv); } if ((clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) && divider->is_frac) |