2019-03-20 12:12:54

by Axel Lin

Subject: [PATCH] regulator: rn5t618: Constify regulator_desc

The regulator_desc never need to be modified, so define them as const as a
hint to the compiler that they can go into .rodata.

Signed-off-by: Axel Lin <[email protected]>
---
drivers/regulator/rn5t618-regulator.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/regulator/rn5t618-regulator.c b/drivers/regulator/rn5t618-regulator.c
index 790a4a73ea2c..a79c0c43b9f8 100644
--- a/drivers/regulator/rn5t618-regulator.c
+++ b/drivers/regulator/rn5t618-regulator.c
@@ -46,7 +46,7 @@ static const struct regulator_ops rn5t618_reg_ops = {
.vsel_mask = (vmask), \
}

-static struct regulator_desc rn5t567_regulators[] = {
+static const struct regulator_desc rn5t567_regulators[] = {
/* DCDC */
REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
@@ -63,7 +63,7 @@ static struct regulator_desc rn5t567_regulators[] = {
REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
};

-static struct regulator_desc rn5t618_regulators[] = {
+static const struct regulator_desc rn5t618_regulators[] = {
/* DCDC */
REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
@@ -79,7 +79,7 @@ static struct regulator_desc rn5t618_regulators[] = {
REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
};

-static struct regulator_desc rc5t619_regulators[] = {
+static const struct regulator_desc rc5t619_regulators[] = {
/* DCDC */
REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
@@ -107,7 +107,7 @@ static int rn5t618_regulator_probe(struct platform_device *pdev)
struct rn5t618 *rn5t618 = dev_get_drvdata(pdev->dev.parent);
struct regulator_config config = { };
struct regulator_dev *rdev;
- struct regulator_desc *regulators;
+ const struct regulator_desc *regulators;
int i;
int num_regulators = 0;

--
2.17.1

2019-03-23 08:35:10

by Stefan Agner

Subject: Re: [PATCH] regulator: rn5t618: Constify regulator_desc

On 20.03.2019 13:10, Axel Lin wrote:
> The regulator_desc never need to be modified, so define them as const as a
> hint to the compiler that they can go into .rodata.
>
> Signed-off-by: Axel Lin <[email protected]>

Looks good to me.

Reviewed-by: Stefan Agner <[email protected]>

--
Stefan

> ---
> drivers/regulator/rn5t618-regulator.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/regulator/rn5t618-regulator.c
> b/drivers/regulator/rn5t618-regulator.c
> index 790a4a73ea2c..a79c0c43b9f8 100644
> --- a/drivers/regulator/rn5t618-regulator.c
> +++ b/drivers/regulator/rn5t618-regulator.c
> @@ -46,7 +46,7 @@ static const struct regulator_ops rn5t618_reg_ops = {
> .vsel_mask = (vmask), \
> }
>
> -static struct regulator_desc rn5t567_regulators[] = {
> +static const struct regulator_desc rn5t567_regulators[] = {
> /* DCDC */
> REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
> REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
> @@ -63,7 +63,7 @@ static struct regulator_desc rn5t567_regulators[] = {
> REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
> };
>
> -static struct regulator_desc rn5t618_regulators[] = {
> +static const struct regulator_desc rn5t618_regulators[] = {
> /* DCDC */
> REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
> REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
> @@ -79,7 +79,7 @@ static struct regulator_desc rn5t618_regulators[] = {
> REG(LDORTC2, LDOEN2, BIT(5), LDORTC2DAC, 0x7f, 900000, 3500000, 25000),
> };
>
> -static struct regulator_desc rc5t619_regulators[] = {
> +static const struct regulator_desc rc5t619_regulators[] = {
> /* DCDC */
> REG(DCDC1, DC1CTL, BIT(0), DC1DAC, 0xff, 600000, 3500000, 12500),
> REG(DCDC2, DC2CTL, BIT(0), DC2DAC, 0xff, 600000, 3500000, 12500),
> @@ -107,7 +107,7 @@ static int rn5t618_regulator_probe(struct
> platform_device *pdev)
> struct rn5t618 *rn5t618 = dev_get_drvdata(pdev->dev.parent);
> struct regulator_config config = { };
> struct regulator_dev *rdev;
> - struct regulator_desc *regulators;
> + const struct regulator_desc *regulators;
> int i;
> int num_regulators = 0;