linux-kernel - [PATCH] regulator: hi6421: mark hi6421_regulator_ldo_get_optimum

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Message-Id: <1472635831-20290-1-git-send-email-baoyou.xie@linaro.org>
Date:   Wed, 31 Aug 2016 17:30:31 +0800
From:   Baoyou Xie <baoyou.xie@...aro.org>
To:     lgirdwood@...il.com, broonie@...nel.org
Cc:     linux-kernel@...r.kernel.org, arnd@...db.de, baoyou.xie@...aro.org,
        xie.baoyou@....com.cn
Subject: [PATCH] regulator: hi6421: mark hi6421_regulator_ldo_get_optimum_mode() static

We get 1 warning when building kernel with W=1:
drivers/regulator/hi6421-regulator.c:480:14: warning: no previous prototype for
'hi6421_regulator_ldo_get_optimum_mode' [-Wmissing-prototypes]

In fact, this function is only used in the file in which it is
declared and don't need a declaration, but can be made static.
So this patch marks it 'static'.

Signed-off-by: Baoyou Xie <baoyou.xie@...aro.org>
---
 drivers/regulator/hi6421-regulator.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/regulator/hi6421-regulator.c b/drivers/regulator/hi6421-regulator.c
index 42dc5fb..62c5f54 100644
--- a/drivers/regulator/hi6421-regulator.c
+++ b/drivers/regulator/hi6421-regulator.c
@@ -477,7 +477,8 @@ static int hi6421_regulator_buck_set_mode(struct regulator_dev *rdev,
 	return 0;
 }
 
-unsigned int hi6421_regulator_ldo_get_optimum_mode(struct regulator_dev *rdev,
+static unsigned int
+hi6421_regulator_ldo_get_optimum_mode(struct regulator_dev *rdev,
 			int input_uV, int output_uV, int load_uA)
 {
 	struct hi6421_regulator_info *info = rdev_get_drvdata(rdev);
-- 
2.7.4