[ Upstream commit 597911287fcd13c3a4b4aa3e0a52b33d431e0a8e ] I2C_SMBUS_BLOCK_MAX defines already the maximum number as defined in the SMBus 2.0 specs. I don't see a reason to add 1 here. Also, fix the errno to what is suggested for this error. Fixes: c9bfdc7c16cb ("i2c: mlxcpld: Add support for smbus block read transaction") Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Michael Shych <michaelsh@mellanox.com> Tested-by: Michael Shych <michaelsh@mellanox.com> Signed-off-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>