x86/lib/pc-conf-reg.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * Support for the configuration register space at port I/O locations
0004  * 0x22 and 0x23 variously used by PC architectures, e.g. the MP Spec,
0005  * Cyrix CPUs, numerous chipsets.  As the space is indirectly addressed
0006  * it may have to be protected with a spinlock, depending on the context.
0007  */
0008
0009 #include <linux/spinlock.h>
0010
0011 #include <asm/pc-conf-reg.h>
0012
0013 DEFINE_RAW_SPINLOCK(pc_conf_lock);