[v3,29/34] clk: zte: change zx_audio_round_rate() return logic

Commit Message

Bryan O'Donoghue Jan. 1, 2018, 7:43 p.m. UTC

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 <[e-mail]>
Cc: Jun Nie <[e-mail]>
Cc: Baoyou Xie <[e-mail]>
Cc: Shawn Guo <[e-mail]>
Cc: Michael Turquette <[e-mail]>
Cc: Stephen Boyd <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
---
 drivers/clk/zte/clk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/drivers/clk/zte/clk.c b/drivers/clk/zte/clk.c
index df91842..6afdc4a 100644
--- a/drivers/clk/zte/clk.c
+++ b/drivers/clk/zte/clk.c
@@ -247,7 +247,7 @@  static unsigned long zx_audio_round_rate(struct clk_hw *hw, unsigned long rate,
 	u32 reg;
 
 	if (rate * 2 > *prate)
-		return -EINVAL;
+		return 0;
 
 	reg = calc_reg(*prate, rate);
 	return calc_rate(reg, *prate);