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SubjectRe: [PATCH v11 10/33] counter: stm32-lptimer-cnt: Add const qualifier for functions_list array
On Wed,  9 Jun 2021 10:31:13 +0900
William Breathitt Gray <vilhelm.gray@gmail.com> wrote:

> The struct counter_count functions_list member expects a const enum
> counter_count_function array. This patch adds the const qualifier to the
> stm32_lptim_cnt_functions to match functions_list.
>
> Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
> Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Applied.

btw a different reasoning for all of these is that static const is
read only and will let linker and compiler do various tricks that it can't
do otherwise.

Jonathan

> ---
> drivers/counter/stm32-lptimer-cnt.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/counter/stm32-lptimer-cnt.c b/drivers/counter/stm32-lptimer-cnt.c
> index 937439635d53..0f7d3f1ec1b6 100644
> --- a/drivers/counter/stm32-lptimer-cnt.c
> +++ b/drivers/counter/stm32-lptimer-cnt.c
> @@ -134,7 +134,7 @@ enum stm32_lptim_cnt_function {
> STM32_LPTIM_ENCODER_BOTH_EDGE,
> };
>
> -static enum counter_count_function stm32_lptim_cnt_functions[] = {
> +static const enum counter_count_function stm32_lptim_cnt_functions[] = {
> [STM32_LPTIM_COUNTER_INCREASE] = COUNTER_COUNT_FUNCTION_INCREASE,
> [STM32_LPTIM_ENCODER_BOTH_EDGE] = COUNTER_COUNT_FUNCTION_QUADRATURE_X4,
> };

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