linux-kernel - [PATCH 26/33] clk: ti: composite: change clk_pll_round

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Message-Id: <1514596392-22270-27-git-send-email-pure.logic@nexus-software.ie>
Date:   Sat, 30 Dec 2017 01:13:05 +0000
From:   Bryan O'Donoghue <pure.logic@...us-software.ie>
To:     mturquette@...libre.com, sboyd@...eaurora.org,
        linux-kernel@...r.kernel.org, linux-clk@...r.kernel.org
Cc:     pure.logic@...us-software.ie, Tero Kristo <t-kristo@...com>,
        linux-omap@...r.kernel.org
Subject: [PATCH 26/33] clk: ti: composite: change clk_pll_round_rate() return logic

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@...us-software.ie>
Cc: Tero Kristo <t-kristo@...com>
Cc: Michael Turquette <mturquette@...libre.com>
Cc: Stephen Boyd <sboyd@...eaurora.org>
Cc: linux-omap@...r.kernel.org
Cc: linux-clk@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
---
 drivers/clk/ti/composite.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/ti/composite.c b/drivers/clk/ti/composite.c
index 2477cf1..0e82b61 100644
--- a/drivers/clk/ti/composite.c
+++ b/drivers/clk/ti/composite.c
@@ -38,7 +38,7 @@ static unsigned long ti_composite_round_rate(struct clk_hw *hw,
 					     unsigned long rate,
 					     unsigned long *prate)
 {
-	return -EINVAL;
+	return 0;
 }
 
 static int ti_composite_set_rate(struct clk_hw *hw, unsigned long rate,
-- 
2.7.4