arch/x86: Fix PCI IO config accessor

In case PCI_IO_CFG_EXT=n parameter 'reg' was not
properly truncated to 8 bits and it would overflow
to dev.fn part of the register.

A similar thing could happen with 'dev' but that
value originates from PCI_DEV() macro unlike 'reg'.

Change-Id: Id2888e07fc0f2b182b4633a747c1786e5c560678
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/31847
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

0 files changed, 0 insertions, 0 deletions