linux

iv/linux

History

Heiner Kallweit aca56c298e i2c: i801: Don't silently correct invalid transfer size

[ Upstream commit effa453168a7eeb8a562ff4edc1dbf9067360a61 ]

If an invalid block size is provided, reject it instead of silently
changing it to a supported value. Especially critical I see the case of
a write transfer with block length 0. In this case we have no guarantee
that the byte we would write is valid. When silently reducing a read to
32 bytes then we don't return an error and the caller may falsely
assume that we returned the full requested data.

If this change should break any (broken) caller, then I think we should
fix the caller.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2022-01-27 09:19:47 +01:00

algos

i2c: algo: pca: Reapply i2c bus settings after reset

2020-09-23 12:40:38 +02:00

busses

i2c: i801: Don't silently correct invalid transfer size

2022-01-27 09:19:47 +01:00

muxes

i2c: mux: demux-pinctrl: Fix an error handling path in 'i2c_demux_pinctrl_probe()'

2020-05-27 17:46:18 +02:00

i2c-boardinfo.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157