[25/33] clk: tegra: pll: change clk_pll_round_rate() return logic

Message ID 1514596392-22270-26-git-send-email-pure.logic@nexus-software.ie
State Not Applicable
Headers show
  • [01/33] clk_ops: change round_rate() to return unsigned long
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Commit Message

Bryan O'Donoghue Dec. 30, 2017, 1:13 a.m.
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@nexus-software.ie>
Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: linux-clk@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Rhyland Klein <rklein@nvidia.com>
Cc: Bill Huang <bilhuang@nvidia.com>
 drivers/clk/tegra/clk-pll.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


diff --git a/drivers/clk/tegra/clk-pll.c b/drivers/clk/tegra/clk-pll.c
index b4a7d30..0a3edb0 100644
--- a/drivers/clk/tegra/clk-pll.c
+++ b/drivers/clk/tegra/clk-pll.c
@@ -839,7 +839,7 @@  static unsigned long clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
 	if (_get_table_rate(hw, &cfg, rate, *prate) &&
 	    pll->params->calc_rate(hw, &cfg, rate, *prate))
-		return -EINVAL;
+		return 0;
 	return cfg.output_rate;