Russ Weight 277a7c23b5 regmap: spi-avmm: Fix regmap_bus max_raw_write ... [ Upstream commit c8e796895e ] The max_raw_write member of the regmap_spi_avmm_bus structure is defined as: .max_raw_write = SPI_AVMM_VAL_SIZE * MAX_WRITE_CNT SPI_AVMM_VAL_SIZE == 4 and MAX_WRITE_CNT == 1 so this results in a maximum write transfer size of 4 bytes which provides only enough space to transfer the address of the target register. It provides no space for the value to be transferred. This bug became an issue (divide-by-zero in _regmap_raw_write()) after the following was accepted into mainline: commit 3981514180 ("regmap: Account for register length when chunking") Change max_raw_write to include space (4 additional bytes) for both the register address and value: .max_raw_write = SPI_AVMM_REG_SIZE + SPI_AVMM_VAL_SIZE * MAX_WRITE_CNT Fixes: 7f9fb67358 ("regmap: add Intel SPI Slave to AVMM Bus Bridge support") Reviewed-by: Matthew Gerlach <matthew.gerlach@linux.intel.com> Signed-off-by: Russ Weight <russell.h.weight@intel.com> Link: https://lore.kernel.org/r/20230620202824.380313-1-russell.h.weight@intel.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-06-28 11:12:26 +02:00
..
Kconfig	…
Makefile	…
internal.h	…
regcache-flat.c	…
regcache-lzo.c	…
regcache-rbtree.c	…
regcache.c	…
regmap-ac97.c	…
regmap-debugfs.c	…
regmap-i2c.c	…
regmap-i3c.c	…
regmap-irq.c	…
regmap-mdio.c	…
regmap-mmio.c	…
regmap-sccb.c	…
regmap-sdw-mbq.c	…
regmap-sdw.c	…
regmap-slimbus.c	…
regmap-spi-avmm.c	regmap: spi-avmm: Fix regmap_bus max_raw_write	2023-06-28 11:12:26 +02:00
regmap-spi.c	…
regmap-spmi.c	…
regmap-w1.c	…
regmap.c	regmap: Account for register length when chunking	2023-06-09 10:34:28 +02:00
trace.h	…