[PATCH v2 4/6] xen: refactor include guards

[Stefano Stabellini <stefano.stabellini@xxxxxxx>]

From: Federico Serafini <federico.serafini@xxxxxxxxxxx>

Refactor inclusion guards:
1) use a syntax that is more likely to be recognized by static
   analyzers;
2) follow the CODING_STYLE.

No functional change.

Signed-off-by: Federico Serafini <federico.serafini@xxxxxxxxxxx>
Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxx>
---
Changes in v2:
- use normal #ifndef
---
 xen/include/xen/err.h     | 10 +++++++---
 xen/include/xen/softirq.h | 10 +++++++---
 2 files changed, 14 insertions(+), 6 deletions(-)

diff --git a/xen/include/xen/err.h b/xen/include/xen/err.h
index cbdd1bf7f8..a5971e290c 100644
--- a/xen/include/xen/err.h
+++ b/xen/include/xen/err.h
@@ -1,5 +1,7 @@
-#if !defined(__XEN_ERR_H__) && !defined(__ASSEMBLY__)
-#define __XEN_ERR_H__
+#ifndef XEN_ERR_H
+#define XEN_ERR_H
+
+#ifndef __ASSEMBLY__
 
 #include <xen/compiler.h>
 #include <xen/errno.h>
@@ -41,4 +43,6 @@ static inline int __must_check PTR_RET(const void *ptr)
        return IS_ERR(ptr) ? PTR_ERR(ptr) : 0;
 }
 
-#endif /* __XEN_ERR_H__ */
+#endif /* __ASSEMBLY__ */
+
+#endif /* XEN_ERR_H */
diff --git a/xen/include/xen/softirq.h b/xen/include/xen/softirq.h
index 33d6f2ecd2..e9f79ec0ce 100644
--- a/xen/include/xen/softirq.h
+++ b/xen/include/xen/softirq.h
@@ -1,5 +1,7 @@
-#if !defined(__XEN_SOFTIRQ_H__) && !defined(__ASSEMBLY__)
-#define __XEN_SOFTIRQ_H__
+#ifndef XEN_SOFTIRQ_H
+#define XEN_SOFTIRQ_H
+
+#ifndef __ASSEMBLY__
 
 /* Low-latency softirqs come first in the following list. */
 enum {
@@ -40,4 +42,6 @@ void cpu_raise_softirq_batch_finish(void);
  */
 void process_pending_softirqs(void);
 
-#endif /* __XEN_SOFTIRQ_H__ */
+#endif /* __ASSEMBLY__ */
+
+#endif /* XEN_SOFTIRQ_H */
-- 
2.25.1