[XEN PATCH v2 09/10] xen: address violations of MISRA C:2012 Directive 4.10

[Simone Ballarin <simone.ballarin@xxxxxxxxxxx>]

Amended inclusion guards to address violations of
MISRA C:2012 Directive 4.10 ("Precautions shall be taken in order
to prevent the contents of a header file being included more than
once").

Inclusion guards must appear at the beginning of the headers
(comments are permitted anywhere) and the #if directive cannot
be used for other checks.

Mechanical change.

---
Changes in v2:
- drop changes in xen/include/xen/unaligned.h since this second
  series adds a comment-based deviation in a separate patch
- use #ifndef instead of #if !defined()
---
 xen/include/xen/err.h     | 4 +++-
 xen/include/xen/pci_ids.h | 5 +++++
 xen/include/xen/softirq.h | 4 +++-
 xen/include/xen/vmap.h    | 4 +++-
 4 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/xen/include/xen/err.h b/xen/include/xen/err.h
index 2f29b57d28..646c20ab4a 100644
--- a/xen/include/xen/err.h
+++ b/xen/include/xen/err.h
@@ -1,5 +1,6 @@
-#if !defined(__XEN_ERR_H__) && !defined(__ASSEMBLY__)
+#ifndef __XEN_ERR_H__
 #define __XEN_ERR_H__
+#ifndef __ASSEMBLY__
 
 #include <xen/compiler.h>
 #include <xen/errno.h>
@@ -54,4 +55,5 @@ static inline int __must_check PTR_RET(const void *ptr)
        return IS_ERR(ptr) ? PTR_ERR(ptr) : 0;
 }
 
+#endif /* __ASSEMBLY__ */
 #endif /* __XEN_ERR_H__ */
diff --git a/xen/include/xen/pci_ids.h b/xen/include/xen/pci_ids.h
index e798477a7e..1a739d4c92 100644
--- a/xen/include/xen/pci_ids.h
+++ b/xen/include/xen/pci_ids.h
@@ -1,3 +1,6 @@
+#ifndef __XEN_PCI_IDS_H__
+#define __XEN_PCI_IDS_H__
+
 #define PCI_VENDOR_ID_AMD                0x1022
 
 #define PCI_VENDOR_ID_NVIDIA             0x10de
@@ -11,3 +14,5 @@
 #define PCI_VENDOR_ID_BROADCOM           0x14e4
 
 #define PCI_VENDOR_ID_INTEL              0x8086
+
+#endif /* __XEN_PCI_IDS_H__ */
diff --git a/xen/include/xen/softirq.h b/xen/include/xen/softirq.h
index 33d6f2ecd2..4c7655188a 100644
--- a/xen/include/xen/softirq.h
+++ b/xen/include/xen/softirq.h
@@ -1,5 +1,6 @@
-#if !defined(__XEN_SOFTIRQ_H__) && !defined(__ASSEMBLY__)
+#ifndef __XEN_SOFTIRQ_H__
 #define __XEN_SOFTIRQ_H__
+#ifndef __ASSEMBLY__
 
 /* Low-latency softirqs come first in the following list. */
 enum {
@@ -40,4 +41,5 @@ void cpu_raise_softirq_batch_finish(void);
  */
 void process_pending_softirqs(void);
 
+#endif /* __ASSEMBLY__ */
 #endif /* __XEN_SOFTIRQ_H__ */
diff --git a/xen/include/xen/vmap.h b/xen/include/xen/vmap.h
index b0f7632e89..03868b0b1a 100644
--- a/xen/include/xen/vmap.h
+++ b/xen/include/xen/vmap.h
@@ -1,5 +1,6 @@
-#if !defined(__XEN_VMAP_H__) && defined(VMAP_VIRT_START)
+#ifndef __XEN_VMAP_H__
 #define __XEN_VMAP_H__
+#ifdef VMAP_VIRT_START
 
 #include <xen/mm-frame.h>
 #include <xen/page-size.h>
@@ -38,4 +39,5 @@ static inline void vm_init(void)
     vm_init_type(VMAP_DEFAULT, (void *)VMAP_VIRT_START, arch_vmap_virt_end());
 }
 
+#endif /* VMAP_VIRT_START */
 #endif /* __XEN_VMAP_H__ */
-- 
2.34.1