[PATCH 21/33] clk: qcom: ipq4019: change clk_cpu_div_round_rate() return logic

[Bryan O'Donoghue]

This patch updates the round_rate() logic here to return zero instead of a
negative number on error.

In conjunction with higher-level changes associated with acting on the
return value of clk_ops->round_rate() it is then possible to have
clk_ops->round_rate() return values from 1 Hz to ULONG_MAX Hz instead of
the current limitation of 1 Hz to LONG_MAX Hz.

Signed-off-by: Bryan O'Donoghue <pure.logic@xxxxxxxxxxxxxxxxx>
Cc: Andy Gross <andy.gross@xxxxxxxxxx>
Cc: David Brown <david.brown@xxxxxxxxxx>
Cc: Abhishek Sahu <absahu@xxxxxxxxxxxxxx>
Cc: Varadarajan Narayanan <varada@xxxxxxxxxxxxxx>
Cc: Michael Turquette <mturquette@xxxxxxxxxxxx>
Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Cc: linux-arm-msm@xxxxxxxxxxxxxxx
Cc: linux-soc@xxxxxxxxxxxxxxx
Cc: linux-clk@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 drivers/clk/qcom/gcc-ipq4019.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/gcc-ipq4019.c b/drivers/clk/qcom/gcc-ipq4019.c
index 804231b..943acbc 100644
--- a/drivers/clk/qcom/gcc-ipq4019.c
+++ b/drivers/clk/qcom/gcc-ipq4019.c
@@ -1268,7 +1268,7 @@ static unsigned long clk_cpu_div_round_rate(struct clk_hw *hw,
 
 	f = qcom_find_freq(pll->freq_tbl, rate);
 	if (!f)
-		return -EINVAL;
+		return 0;
 
 	p_hw = clk_hw_get_parent_by_index(hw, f->src);
 	*p_rate = clk_hw_get_rate(p_hw);
-- 
2.7.4