[flashrom-gerrit] Change in flashrom[master]: nicintel_spi.c: Cache FLA register value

[Angel Pons (Code Review)]

Attention is currently required from: Nico Huber.
Hello Nico Huber,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/flashrom/+/55720

to look at the new patch set (#2).

Change subject: nicintel_spi.c: Cache FLA register value
......................................................................

nicintel_spi.c: Cache FLA register value

Only read the FLA register to get the state of MISO, and when requesting
and releasing the bus. This is an optimisation to speed things up.

Tested on a 8086:1533 (i210 GbE), reads still return the same data.
This cuts the time to read a Winbond W25Q80.V (1 MiB, SPI) from 48
seconds down to 33 seconds, i.e. a 45% increase in speed.

Change-Id: I4013a71ec498be977f62fe2531ac8770bfffadcd
Signed-off-by: Angel Pons 
---
M nicintel_spi.c
1 file changed, 30 insertions(+), 40 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/20/55720/2