Thread (62 messages) flat view 62 messages, 4 authors, 2021-07-03

Re: [PATCH v11 10/33] counter: stm32-lptimer-cnt: Add const qualifier for functions_list array

From: Jonathan Cameron <jic23@kernel.org>
Date: 2021-06-09 15:23:57
Also in: linux-iio, lkml

On Wed,  9 Jun 2021 10:31:13 +0900
William Breathitt Gray [off-list ref] 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 <redacted>
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
quoted hunk ↗ jump to hunk
---
 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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