[PATCH 28/33] clk: zte: change zx_audio_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.lo...@nexus-software.ie>
Cc: Jun Nie <jun....@linaro.org>
Cc: Baoyou Xie <baoyou....@linaro.org>
Cc: Shawn Guo <shawn...@kernel.org>
Cc: Michael Turquette <mturque...@baylibre.com>
Cc: Stephen Boyd <sb...@codeaurora.org>
Cc: linux-arm-ker...@lists.infradead.org
Cc: linux-...@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/clk/zte/clk.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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);
-- 
2.7.4