Re: [PATCH] iio:adc:at91-sama5d2: make array startup_lookup static to reduce code size

From: Jonathan Cameron
Date: Sun Jul 09 2017 - 14:14:51 EST


On Fri, 7 Jul 2017 17:08:35 +0100
Colin King <colin.king@xxxxxxxxxxxxx> wrote:

> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> Making the const array startup_lookup static rather having it on the
> stack saves 69 bytes. Add in missing int specifier to clean up a
> checkpatch warning.
>
> Before:
> text data bss dec hex filename
> 10297 2800 128 13225 33a9 drivers/iio/adc/at91-sama5d2_adc.o
>
> After:
> text data bss dec hex filename
> 10140 2888 128 13156 3364 drivers/iio/adc/at91-sama5d2_adc.o
>
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Applied to the togreg branch of iio.git and pushed out as testing.

Thanks,

Jonathan
> ---
> drivers/iio/adc/at91-sama5d2_adc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
> index e10dca3ed74b..509988a6817a 100644
> --- a/drivers/iio/adc/at91-sama5d2_adc.c
> +++ b/drivers/iio/adc/at91-sama5d2_adc.c
> @@ -231,7 +231,7 @@ static const struct iio_chan_spec at91_adc_channels[] = {
> static unsigned at91_adc_startup_time(unsigned startup_time_min,
> unsigned adc_clk_khz)
> {
> - const unsigned startup_lookup[] = {
> + static const unsigned int startup_lookup[] = {
> 0, 8, 16, 24,
> 64, 80, 96, 112,
> 512, 576, 640, 704,