On Tue, Jan 12, 2021 at 05:41:28PM +0100, Wolfram Sang wrote:

The open coded version differs from the one in the core in one way: the
buffer will be always copied back, even when the transfer failed. It
looks like it is expected that the sanity check for a correct CRC and
header will bail out later.

Use the block read from the I2C core and propagate a potential errno
further to the sanity check.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

$subject should say "adv7511", sorry!