tree 52ea3e4cdeae03ae444cd155ab96cf87e94c04c4
parent 0b32d65cd7938d31eebd9c62aab6a59a3c4cf0f8
author Jiri Slaby <jslaby@suse.cz> 1264173052 -0300
committer Mauro Carvalho Chehab <mchehab@redhat.com> 1267207852 -0300

V4L/DVB: media: dvb/af9015, implement eeprom hashing

This will be useful for matching of IR tables later.

We read the eeprom anyway for dumping. Switch the dumping to
print_hex_dump_bytes and compute hash above that by
hash = 0;
for (u32 VAL) in (eeprom):
  hash *= GOLDEN_RATIO_PRIME_32
  hash += VAL; // while preserving endinaness

The computation is moved earlier to the flow, namely from
af9015_af9013_frontend_attach to af9015_read_config, so that
we can access the sum in af9015_read_config already.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>