Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / tools / virtio / linux / err.h

diff --git a/kernel/tools/virtio/linux/err.h b/kernel/tools/virtio/linux/err.h
new file mode 100644 (file)
index 0000000..e32eff8
--- /dev/null
+++ b/kernel/tools/virtio/linux/err.h
@@ -0,0 +1,26 @@
+#ifndef ERR_H
+#define ERR_H
+#define MAX_ERRNO      4095
+
+#define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
+
+static inline void * __must_check ERR_PTR(long error)
+{
+       return (void *) error;
+}
+
+static inline long __must_check PTR_ERR(const void *ptr)
+{
+       return (long) ptr;
+}
+
+static inline long __must_check IS_ERR(const void *ptr)
+{
+       return IS_ERR_VALUE((unsigned long)ptr);
+}
+
+static inline long __must_check IS_ERR_OR_NULL(const void *ptr)
+{
+       return !ptr || IS_ERR_VALUE((unsigned long)ptr);
+}
+#endif /* ERR_H */