| 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 | |
| 13 | DEFINE_RAW_SPINLOCK(pc_conf_lock); |
| 14 |