[PATCH] regulator: qcom: labibb: Constify static structs

[PATCH] regulator: qcom: labibb: Constify static structs

[Rikard Falkeborn]

The only usage of qcom_labibb_ops is to assign it to the ops field in
the regulator_desc struct, which is a const pointer. The only usage of
pmi8998_lab_desc and pmi8998_ibb_desc is to assign their address to the
desc field in the labibb_regulator_data struct which can be made const,
since it is only copied into the desc field in the
labbibb_regulator_data struct. This struct is modified, but that's a
copy of the static one. Make them const to allow the compiler to put
them in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
---
 drivers/regulator/qcom-labibb-regulator.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/regulator/qcom-labibb-regulator.c b/drivers/regulator/qcom-labibb-regulator.c
index 8c7dd1928380..8ccf572394a2 100644
--- a/drivers/regulator/qcom-labibb-regulator.c
+++ b/drivers/regulator/qcom-labibb-regulator.c
@@ -44,16 +44,16 @@ struct labibb_regulator_data {
 	const char			*name;
 	u8				type;
 	u16				base;
-	struct regulator_desc		*desc;
+	const struct regulator_desc	*desc;
 };
 
-static struct regulator_ops qcom_labibb_ops = {
+static const struct regulator_ops qcom_labibb_ops = {
 	.enable			= regulator_enable_regmap,
 	.disable		= regulator_disable_regmap,
 	.is_enabled		= regulator_is_enabled_regmap,
 };
 
-static struct regulator_desc pmi8998_lab_desc = {
+static const struct regulator_desc pmi8998_lab_desc = {
 	.enable_mask		= LAB_ENABLE_CTL_MASK,
 	.enable_reg		= (PMI8998_LAB_REG_BASE + REG_LABIBB_ENABLE_CTL),
 	.enable_val		= LABIBB_CONTROL_ENABLE,
@@ -65,7 +65,7 @@ static struct regulator_desc pmi8998_lab_desc = {
 	.ops			= &qcom_labibb_ops,
 };
 
-static struct regulator_desc pmi8998_ibb_desc = {
+static const struct regulator_desc pmi8998_ibb_desc = {
 	.enable_mask		= IBB_ENABLE_CTL_MASK,
 	.enable_reg		= (PMI8998_IBB_REG_BASE + REG_LABIBB_ENABLE_CTL),
 	.enable_val		= LABIBB_CONTROL_ENABLE,
-- 
2.28.0

Re: [PATCH] regulator: qcom: labibb: Constify static structs

[Mark Brown]

On Wed, 30 Sep 2020 18:26:02 +0200, Rikard Falkeborn wrote:
> The only usage of qcom_labibb_ops is to assign it to the ops field in
> the regulator_desc struct, which is a const pointer. The only usage of
> pmi8998_lab_desc and pmi8998_ibb_desc is to assign their address to the
> desc field in the labibb_regulator_data struct which can be made const,
> since it is only copied into the desc field in the
> labbibb_regulator_data struct. This struct is modified, but that's a
> copy of the static one. Make them const to allow the compiler to put
> them in read-only memory.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next

Thanks!

[1/1] regulator: qcom: labibb: Constify static structs
      commit: e6f5ff17ca96456deceef94cf2577012a9df737f

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark