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if an MD version of smp_mb() is not defined, use mb()

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jsg
2025-10-21 03:06:42 +00:00
parent 72e34f5cd9
commit fd783df94b
1 changed files with 5 additions and 1 deletions
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6
sys/dev/pci/drm/include/linux/atomic.h
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@@ -1,4 +1,4 @@
/* $OpenBSD: atomic.h,v 1.29 2025/10/21 02:55:48 jsg Exp $ */
/* $OpenBSD: atomic.h,v 1.30 2025/10/21 03:06:42 jsg Exp $ */
/**
* \file drm_atomic.h
* Atomic operations used in the DRM which may or may not be provided by the OS.
@@ -467,6 +467,10 @@ find_next_bit(const volatile void *p, int max, int b)
#define smp_wmb() wmb()
#endif
#ifndef smp_mb
#define smp_mb() mb()
#endif
#ifndef mmiowb
#define mmiowb() wmb()
#endif