1// SPDX-License-Identifier: GPL-2.0
 2/*
 3 * Support for the configuration register space at port I/O locations
 4 * 0x22 and 0x23 variously used by PC architectures, e.g. the MP Spec,
 5 * Cyrix CPUs, numerous chipsets.  As the space is indirectly addressed
 6 * it may have to be protected with a spinlock, depending on the context.
 7 */
 8
 9#include <linux/spinlock.h>
10
11#include <asm/pc-conf-reg.h>
12
13DEFINE_RAW_SPINLOCK(pc_conf_lock);