regulator: core: Avoid negative regulator no & initialize it to -1

This patch initializes regulator_no to -1 to avoid extra subtraction
operation performed every time we register a regulator and avoid negative
regulator no in its name.

Signed-off-by: Aniroop Mathur <a.mathur@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index e225711bb8bc0009114d6ec0d95ab8d2bb2d68f3..4bc5ea9721c22c643e9c641b016bc2aa8cbc1ae8 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -3585,7 +3585,7 @@ 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;
@@ -3658,8 +3658,8 @@ regulator_register(const struct regulator_desc *regulator_desc,
        /* register with sysfs */
        rdev->dev.class = &regulator_class;
        rdev->dev.parent = dev;
-       dev_set_name(&rdev->dev, "regulator.%d",
-                    atomic_inc_return(&regulator_no) - 1);
+       dev_set_name(&rdev->dev, "regulator.%lu",
+                    atomic_inc_return(&regulator_no));
        ret = device_register(&rdev->dev);
        if (ret != 0) {
                put_device(&rdev->dev);