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-bpmp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/tegra/clk-bpmp.c b/drivers/clk/tegra/clk-bpmp.c
index 0c1197b..4297bb2 100644
--- a/drivers/clk/tegra/clk-bpmp.c
+++ b/drivers/clk/tegra/clk-bpmp.c
@@ -190,7 +190,7 @@ static unsigned long tegra_bpmp_clk_round_rate(struct 
clk_hw *hw,
 
        err = tegra_bpmp_clk_transfer(clk->bpmp, &msg);
        if (err < 0)
-               return err;
+               return 0;
 
        return response.rate;
 }
-- 
2.7.4

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