tree 89298b49e35ca9af4ead9eb194ac2abdcf1020ec
parent fb0828f3db2b6c298b5617690a70cc92f34f3287
author Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> 1266003445 +0000
committer Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net> 1266003445 +0000

Ignore RES (1 byte) if chip replied to REMS (2 bytes)

SPI RES is the most unreliable way to identify chips because it only
returns a 1-byte ID for most chips.

For every given ID out there, probably a dozen incompatible flash
chips match it. We already refuse to identify a chip with RES if that
chip responds to RDID (3 bytes, good match), and with this patch we
additionally refuse RES if the chip responds to REMS (2 bytes, still a
good match). This increases matching accuracy a lot.

Besides that, the RDID/REMS response checking has been cleaned up for
better readability.

Corresponding to flashrom svn r899.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Sean Nelson <audiohacked@gmail.com>