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linux-stable/drivers/base/regmap
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Cristian Ciocaltea f5723cfc01
regmap: spi: Reserve space for register address/padding 
Currently the max_raw_read and max_raw_write limits in regmap_spi struct
do not take into account the additional size of the transmitted register
address and padding.  This may result in exceeding the maximum permitted
SPI message size, which could cause undefined behaviour, e.g. data
corruption.

Fix regmap_get_spi_bus() to properly adjust the above mentioned limits
by reserving space for the register address/padding as set in the regmap
configuration.

Fixes: f231ff38b7 ("regmap: spi: Set regmap max raw r/w from max_transfer_size")

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220818104851.429479-1-cristian.ciocaltea@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2022-08-18 15:02:05 +01:00
..
internal.h regmap: Add bulk read/write callbacks into regmap_config 2022-05-05 13:22:34 +01:00
Kconfig regmap: Add MDIO bus support 2021-05-19 14:19:10 +01:00
Makefile regmap: Add MDIO bus support 2021-05-19 14:19:10 +01:00
regcache-flat.c
regcache-lzo.c regmap: lzo: Switch to bitmap_zalloc() 2019-06-17 15:18:44 +01:00
regcache-rbtree.c regmap: Fix possible double-free in regcache_rbtree_exit() 2021-10-12 11:48:43 +01:00
regcache.c regmap: cache: Add extra parameter check in regcache_init 2022-06-30 13:33:21 +01:00
regmap-ac97.c
regmap-debugfs.c regmap: debugfs: Fix indentation 2022-01-07 19:16:23 +00:00
regmap-i2c.c regmap-i2c: Set regmap max raw r/w from quirks 2021-05-14 13:25:03 +01:00
regmap-i3c.c regmap: Constify static regmap_bus structs 2022-04-04 08:41:50 +01:00
regmap-irq.c regmap-irq: Fix bug in regmap_irq_get_irq_reg_linear() 2022-07-05 13:00:55 +01:00
regmap-mdio.c net: Convert more users of mdiobus_* to mdiodev_* 2021-10-24 13:40:33 +01:00
regmap-mmio.c regmap: Prefer unsigned int to bare use of unsigned 2021-07-11 23:48:43 +01:00
regmap-sccb.c regmap: Constify static regmap_bus structs 2022-04-04 08:41:50 +01:00
regmap-sdw-mbq.c regmap: Constify static regmap_bus structs 2022-04-04 08:41:50 +01:00
regmap-sdw.c regmap: Constify static regmap_bus structs 2022-04-04 08:41:50 +01:00
regmap-slimbus.c regmap: Constify static regmap_bus structs 2022-04-04 08:41:50 +01:00
regmap-spi-avmm.c regmap: add Intel SPI Slave to AVMM Bus Bridge support 2020-08-26 19:46:38 +01:00
regmap-spi.c regmap: spi: Reserve space for register address/padding 2022-08-18 15:02:05 +01:00
regmap-spmi.c
regmap-w1.c regmap: Constify static regmap_bus structs 2022-04-04 08:41:50 +01:00
regmap.c regmap: permit to set reg_update_bits with bulk implementation 2022-07-18 13:45:28 +01:00
trace.h regmap: Remove duplicate type field from regmap regcache_sync trace event 2020-11-24 14:14:00 +00:00