flashrom: rewrite flashbuses_to_text()

The previous implementation had no error handling, as a result the
flashrom could crash if the computer ran out of memory. The new
version returns NULL in such cases.

Also, rewrite lots of `if` conditions to one cycle, store a name of
buses and `enum chipbustype` in an array by using a custom struct.

The caller always expected a non-null value, so change its behavior to
handle a possible null value or use the `?` symbol. As far as `free()`
can handle null pointers, do nothing with such callers.

TEST=ninja test

Change-Id: I59b9044c99b4ba6c00d8c97f1e91af09d70dce2c
Signed-off-by: Alexander Goncharov <chat@joursoir.net>
Ticket: https://ticket.coreboot.org/issues/408
Reviewed-on: https://review.coreboot.org/c/flashrom/+/73039
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>

0 files changed, 0 insertions, 0 deletions