[S] Change in flashrom[main]: Correct get_flash_region() to use inclusive upper bounds

[Peter Marheine (Code Review)]

Attention is currently required from: Aarya, Peter Marheine.

Hello Aarya, build bot (Jenkins),

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

https://review.coreboot.org/c/flashrom/+/82496?usp=email

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

Change subject: Correct get_flash_region() to use inclusive upper bounds
......................................................................

Correct get_flash_region() to use inclusive upper bounds

get_flash_region() emits a struct flash_region, which uses chipoff_t for
the start and end addresses of a region. chipoff_t is defined as a valid
flash address, so it was wrong to be setting the end address to start +
len; this is clearly wrong in the case where there is a single region
because setting end to the flash size generates an address that is
beyond the end of the chip (due to zero-indexing).

This changes the one actual implementation of .get_region in ichspi.c to
use inclusive upper bounds, and corrects all callers of
get_flash_region() to treat the upper bounds as inclusive. Overall this
reduces complexity slightly by removing more downward adjustments by 1
than it needs to add upward adjustments.

Change-Id: Ia0ca867aef33b598c2697fc264807fa5e29683ec
Signed-off-by: Peter Marheine 
---
M erasure_layout.c
M flashrom.c
M ichspi.c
3 files changed, 20 insertions(+), 20 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/96/82496/2