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SubjectRe: [PATCH] power: supply: lp8788: Make several arrays static const * const
Hi,

On Fri, Aug 11, 2017 at 10:52:12PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> Don't populate various read only arrays on the stack but make them
> static const, making the object code smaller and saves 148 bytes
> overall:
>
> Before:
> text data bss dec hex filename
> 11940 4496 64 16500 4074 lp8788-charger.o
>
> After:
> text data bss dec hex filename
> 11472 4816 64 16352 3fe0 lp8788-charger.o
>
> Signed-off-by: Colin Ian King <colin.king@canonical.com>

Thanks, queued.

-- Sebastian

> ---
> drivers/power/supply/lp8788-charger.c | 18 ++++++++++++------
> 1 file changed, 12 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/power/supply/lp8788-charger.c b/drivers/power/supply/lp8788-charger.c
> index 677f7c40b25a..0f3432795f3c 100644
> --- a/drivers/power/supply/lp8788-charger.c
> +++ b/drivers/power/supply/lp8788-charger.c
> @@ -626,7 +626,7 @@ static ssize_t lp8788_show_charger_status(struct device *dev,
> {
> struct lp8788_charger *pchg = dev_get_drvdata(dev);
> enum lp8788_charging_state state;
> - char *desc[LP8788_MAX_CHG_STATE] = {
> + static const char * const desc[LP8788_MAX_CHG_STATE] = {
> [LP8788_OFF] = "CHARGER OFF",
> [LP8788_WARM_UP] = "WARM UP",
> [LP8788_LOW_INPUT] = "LOW INPUT STATE",
> @@ -650,8 +650,10 @@ static ssize_t lp8788_show_eoc_time(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct lp8788_charger *pchg = dev_get_drvdata(dev);
> - char *stime[] = { "400ms", "5min", "10min", "15min",
> - "20min", "25min", "30min", "No timeout" };
> + static const char * const stime[] = {
> + "400ms", "5min", "10min", "15min",
> + "20min", "25min", "30min", "No timeout"
> + };
> u8 val;
>
> lp8788_read_byte(pchg->lp, LP8788_CHG_EOC, &val);
> @@ -665,9 +667,13 @@ static ssize_t lp8788_show_eoc_level(struct device *dev,
> struct device_attribute *attr, char *buf)
> {
> struct lp8788_charger *pchg = dev_get_drvdata(dev);
> - char *abs_level[] = { "25mA", "49mA", "75mA", "98mA" };
> - char *relative_level[] = { "5%", "10%", "15%", "20%" };
> - char *level;
> + static const char * const abs_level[] = {
> + "25mA", "49mA", "75mA", "98mA"
> + };
> + static const char * const relative_level[] = {
> + "5%", "10%", "15%", "20%"
> + };
> + const char *level;
> u8 val;
> u8 mode;
>
> --
> 2.11.0
>
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