pc-conf-reg.c 425 B

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  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. #include <linux/spinlock.h>
  9. #include <asm/pc-conf-reg.h>
  10. DEFINE_RAW_SPINLOCK(pc_conf_lock);