linux-bredos

Files

Heiner Kallweit 74ee67b1a7 i2c: i801: fix potential race in i801_block_transaction_byte_by_byte

commit f78ca48a8b upstream.

Currently we set SMBHSTCNT_LAST_BYTE only after the host has started
receiving the last byte. If we get e.g. preempted before setting
SMBHSTCNT_LAST_BYTE, the host may be finished with receiving the byte
before SMBHSTCNT_LAST_BYTE is set.
Therefore change the code to set SMBHSTCNT_LAST_BYTE before writing
SMBHSTSTS_BYTE_DONE for the byte before the last byte. Now the code
is also consistent with what we do in i801_isr_byte_done().

Reported-by: Jean Delvare <jdelvare@suse.com>
Closes: https://lore.kernel.org/linux-i2c/20230828152747.09444625@endymion.delvare/
Cc: stable@vger.kernel.org
Acked-by: Andi Shyti <andi.shyti@kernel.org>
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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2023-11-28 17:20:11 +00:00

algos

i2c: algo: bit: allow getsda to be NULL

2023-01-23 23:15:49 +01:00

busses

i2c: i801: fix potential race in i801_block_transaction_byte_by_byte

2023-11-28 17:20:11 +00:00

muxes

i2c: muxes: i2c-mux-gpmux: Use of_get_i2c_adapter_by_node()

2023-10-21 19:57:18 +02:00

i2c-atr.c

media: i2c: add I2C Address Translator (ATR) support