[PATCH v3 27/34] clk: ti: composite: change clk_pll_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: Tero Kristo <t-kristo@xxxxxx>
Cc: Michael Turquette <mturquette@xxxxxxxxxxxx>
Cc: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Cc: linux-omap@xxxxxxxxxxxxxxx
Cc: linux-clk@xxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 drivers/clk/ti/composite.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/ti/composite.c b/drivers/clk/ti/composite.c
index 2477cf1..0e82b61 100644
--- a/drivers/clk/ti/composite.c
+++ b/drivers/clk/ti/composite.c
@@ -38,7 +38,7 @@ static unsigned long ti_composite_round_rate(struct clk_hw *hw,
 					     unsigned long rate,
 					     unsigned long *prate)
 {
-	return -EINVAL;
+	return 0;
 }
 
 static int ti_composite_set_rate(struct clk_hw *hw, unsigned long rate,
-- 
2.7.4