| // 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); |