[PATCH v2 24/34] clk: tegra: change clk_sync_source_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: Peter De Schrijver <pdeschrij...@nvidia.com>
Cc: Prashant Gaikwad <pgaik...@nvidia.com>
Cc: Michael Turquette <mturque...@baylibre.com>
Cc: Stephen Boyd <sb...@codeaurora.org>
Cc: Thierry Reding <thierry.red...@gmail.com>
Cc: Jonathan Hunter <jonath...@nvidia.com>
Cc: linux-...@vger.kernel.org
Cc: linux-te...@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/clk/tegra/clk-audio-sync.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/tegra/clk-audio-sync.c 
b/drivers/clk/tegra/clk-audio-sync.c
index 9784d58..5fd825b 100644
--- a/drivers/clk/tegra/clk-audio-sync.c
+++ b/drivers/clk/tegra/clk-audio-sync.c
@@ -35,7 +35,7 @@ static unsigned long clk_sync_source_round_rate(struct clk_hw 
*hw,
        struct tegra_clk_sync_source *sync = to_clk_sync_source(hw);
 
        if (rate > sync->max_rate)
-               return -EINVAL;
+               return 0;
        else
                return rate;
 }
-- 
2.7.4