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