[v3,25/34] clk: tegra: bpmp: change tegra_bpmp_clk_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: Peter De Schrijver <[e-mail]>
Cc: Prashant Gaikwad <[e-mail]>
Cc: Michael Turquette <[e-mail]>
Cc: Stephen Boyd <[e-mail]>
Cc: Thierry Reding <[e-mail]>
Cc: Jonathan Hunter <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Cc: [e-mail]
---
 drivers/clk/tegra/clk-bpmp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

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;
 }