2014-12-28 15:57:16

by Aniroop Mathur

Subject: [PATCH] regulator: core: Initialize regulator_no to -1

From: Aniroop Mathur <[email protected]>

This patch initializes regulator_no to -1 to avoid extra subtraction
operation performed every time we register a regulator.

Signed-off-by: Aniroop Mathur <[email protected]>
---
drivers/regulator/core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index a3c3785..4da1d98 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -3481,7 +3481,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
{
const struct regulation_constraints *constraints = NULL;
const struct regulator_init_data *init_data;
- static atomic_t regulator_no = ATOMIC_INIT(0);
+ static atomic_t regulator_no = ATOMIC_INIT(-1);
struct regulator_dev *rdev;
struct device *dev;
int ret, i;
@@ -3551,7 +3551,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
rdev->dev.of_node = of_node_get(config->of_node);
rdev->dev.parent = dev;
dev_set_name(&rdev->dev, "regulator.%d",
- atomic_inc_return(&regulator_no) - 1);
+ atomic_inc_return(&regulator_no));
ret = device_register(&rdev->dev);
if (ret != 0) {
put_device(&rdev->dev);
--
1.9.1