tree 1baf6e78eb6894fa9290f1699383f8ac71b18ce0
parent b6c159a9cb69c2cf0bf59d4e12c3a2da77e4d994
author Stephen Douthit <stephend@adiengineering.com> 1502140260 -0400
committer Wolfram Sang <wsa@the-dreams.de> 1504037630 +0200

i2c: ismt: Return EMSGSIZE for block reads with bogus length

Compare the number of bytes actually seen on the wire to the byte
count field returned by the slave device.

Previously we just overwrote the byte count returned by the slave
with the real byte count and let the caller figure out if the
message was sane.

Signed-off-by: Stephen Douthit <stephend@adiengineering.com>
Tested-by: Dan Priamo <danp@adiengineering.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org