We should add 1 to the max_register index since counting is zero based. i.e. the stm32mp151 bsec has registers 0 - 95 with reg_stride 4. Size should be (95 + 1) * 4 = 384 bytes otherwise we can't access bsec register 95 (last one). Signed-off-by: Robin van der Gracht <robin@xxxxxxxxxxx> --- drivers/nvmem/regmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/nvmem/regmap.c b/drivers/nvmem/regmap.c index fa5405d7a8..ffc96a310f 100644 --- a/drivers/nvmem/regmap.c +++ b/drivers/nvmem/regmap.c @@ -78,7 +78,7 @@ nvmem_regmap_register_with_pp(struct regmap *map, const char *name, config.priv = map; config.stride = 1; config.word_size = 1; - config.size = regmap_get_max_register(map) * regmap_get_reg_stride(map); + config.size = (regmap_get_max_register(map) + 1) * regmap_get_reg_stride(map); config.cell_post_process = cell_post_process; config.reg_write = nvmem_regmap_write; config.reg_read = nvmem_regmap_read; -- 2.40.1
