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-rw-r--r--linux-core/drmP.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/linux-core/drmP.h b/linux-core/drmP.h
index 2bbc6200..3b2176c9 100644
--- a/linux-core/drmP.h
+++ b/linux-core/drmP.h
@@ -1264,5 +1264,19 @@ static inline void drm_ctl_free(void *pt, size_t size, int area)
/*@}*/
+/** Type for the OS's non-sleepable mutex lock */
+#define DRM_SPINTYPE spinlock_t
+/**
+ * Initialize the lock for use. name is an optional string describing the
+ * lock
+ */
+#define DRM_SPININIT(l,name) spin_lock_init(l);
+#define DRM_SPINUNINIT(l)
+#define DRM_SPINLOCK(l) spin_lock(l);
+#define DRM_SPINUNLOCK(u) spin_unlock(l);
+#define DRM_SPINLOCK_IRQSAVE(l, flags) spin_lock_irqflags(l, _flags);
+#define DRM_SPINUNLOCK_IRQRESTORE(u, flags) spin_unlock_irqrestore(l, _flags);
+#define DRM_SPINLOCK_ASSERT(l) do {} while (0)
+
#endif /* __KERNEL__ */
#endif