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regmap-irq: handle const struct regmap_irq_sub_irq_map

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The struct instances supplied by the drivers are never modified.
Handle them as const in the regmap core allowing the drivers to put them
into .rodata.

Also add a new entry to const_structs.checkpatch to make sure future
instances of this struct already enter the tree as const.

Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
Link: https://patch.msgid.link/20240706-regmap-const-structs-v1-2-d08c776da787@weissschuh.net
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Thomas Weißschuh 2024-07-06 13:13:42 +02:00 committed by Mark Brown
parent 0f02ba48cd
commit f21711bbdb
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GPG Key ID: 24D68B725D5487D0
3 changed files with 3 additions and 2 deletions
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2
drivers/base/regmap/regmap-irq.c
View File

@ -305,8 +305,8 @@ static inline int read_sub_irq_data(struct regmap_irq_chip_data *data,
unsigned int b)
{
const struct regmap_irq_chip *chip = data->chip;
const struct regmap_irq_sub_irq_map *subreg;
struct regmap *map = data->map;
struct regmap_irq_sub_irq_map *subreg;
unsigned int reg;
int i, ret = 0;

2
include/linux/regmap.h
View File

@ -1607,7 +1607,7 @@ struct regmap_irq_chip {
unsigned int main_status;
unsigned int num_main_status_bits;
struct regmap_irq_sub_irq_map *sub_reg_offsets;
const struct regmap_irq_sub_irq_map *sub_reg_offsets;
int num_main_regs;
unsigned int status_base;

1
scripts/const_structs.checkpatch
View File

@ -72,6 +72,7 @@ regmap_bus
regmap_config
regmap_irq
regmap_irq_chip
regmap_irq_sub_irq_map
regmap_range
regmap_range_cfg
regulator_ops