mctp i2c: initialise event handler read bytes

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[ Upstream commit 2a14e91b6d ]

Set a 0xff value for i2c reads of an mctp-i2c device. Otherwise reads
will return "val" from the i2c bus driver. For i2c-aspeed and
i2c-npcm7xx that is a stack uninitialised u8.

Tested with "i2ctransfer -y 1 r10@0x34" where 0x34 is a mctp-i2c
instance, now it returns all 0xff.

Fixes: f5b8abf9fc ("mctp i2c: MCTP I2C binding driver")
Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Link: https://patch.msgid.link/20260113-mctp-read-fix-v1-1-70c4b59c741c@codeconstruct.com.au
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Matt Johnston 2026-01-13 17:01:16 +08:00 • committed by Sasha Levin

parent 8468dd5bc1

commit fa9861e5c8

1 changed files with 3 additions and 0 deletions

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drivers/net/mctp/mctp-i2c.c

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