[1/6] iio: adc: max11100: Constify struct iio_chan_spec
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Message ID 20200526210223.1672-2-rikard.falkeborn@gmail.com
State New
Headers show
Series
  • drivers/iio: Constify structs
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Commit Message

Rikard Falkeborn May 26, 2020, 9:02 p.m. UTC
max11100_channels is not modified and can therefore be made const to
allow the compiler to put it in read-only memory.

Before:
   text    data     bss     dec     hex filename
   3776    1168       0    4944    1350 drivers/iio/adc/max11100.o

After:
   text    data     bss     dec     hex filename
   3968     976       0    4944    1350 drivers/iio/adc/max11100.o

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
---
 drivers/iio/adc/max11100.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Jonathan Cameron May 31, 2020, 1:07 p.m. UTC | #1
On Tue, 26 May 2020 23:02:18 +0200
Rikard Falkeborn <rikard.falkeborn@gmail.com> wrote:

> max11100_channels is not modified and can therefore be made const to
> allow the compiler to put it in read-only memory.
> 
> Before:
>    text    data     bss     dec     hex filename
>    3776    1168       0    4944    1350 drivers/iio/adc/max11100.o
> 
> After:
>    text    data     bss     dec     hex filename
>    3968     976       0    4944    1350 drivers/iio/adc/max11100.o
> 
> Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Applied to the togreg branch of iio.git and pushed out as testing for
the autobuilders to play with it.

Thanks,

Jonathan

> ---
>  drivers/iio/adc/max11100.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/adc/max11100.c b/drivers/iio/adc/max11100.c
> index 3440539cfdba..b121ca78f851 100644
> --- a/drivers/iio/adc/max11100.c
> +++ b/drivers/iio/adc/max11100.c
> @@ -37,7 +37,7 @@ struct max11100_state {
>  	u8 buffer[3] ____cacheline_aligned;
>  };
>  
> -static struct iio_chan_spec max11100_channels[] = {
> +static const struct iio_chan_spec max11100_channels[] = {
>  	{ /* [0] */
>  		.type = IIO_VOLTAGE,
>  		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |

Patch
diff mbox series

diff --git a/drivers/iio/adc/max11100.c b/drivers/iio/adc/max11100.c
index 3440539cfdba..b121ca78f851 100644
--- a/drivers/iio/adc/max11100.c
+++ b/drivers/iio/adc/max11100.c
@@ -37,7 +37,7 @@  struct max11100_state {
 	u8 buffer[3] ____cacheline_aligned;
 };
 
-static struct iio_chan_spec max11100_channels[] = {
+static const struct iio_chan_spec max11100_channels[] = {
 	{ /* [0] */
 		.type = IIO_VOLTAGE,
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |