[xen staging] xen/lz4: address violations of MISRA C:2012 Directive 4.10

[patchbot@xxxxxxx]

commit 3945b61ddb6b2e9f0226ebe4112d4d81463dfac7
Author:     Maria Celeste Cesario <maria.celeste.cesario@xxxxxxxxxxx>
AuthorDate: Thu Mar 14 13:52:46 2024 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Mar 14 13:52:46 2024 +0100

    xen/lz4: address violations of MISRA C:2012 Directive 4.10
    
    Add inclusion guard 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").
    Mechanical change.
    
    Signed-off-by: Maria Celeste Cesario <maria.celeste.cesario@xxxxxxxxxxx>
    Signed-off-by: Simone Ballarin <simone.ballarin@xxxxxxxxxxx>
    Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
---
 xen/common/lz4/defs.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/xen/common/lz4/defs.h b/xen/common/lz4/defs.h
index 6d81113266..ecfbf07f83 100644
--- a/xen/common/lz4/defs.h
+++ b/xen/common/lz4/defs.h
@@ -8,6 +8,9 @@
  * published by the Free Software Foundation.
  */
 
+#ifndef COMMON_LZ4_DEFS_H
+#define COMMON_LZ4_DEFS_H
+
 #ifdef __XEN__
 #include <asm/byteorder.h>
 #include <xen/unaligned.h>
@@ -166,3 +169,5 @@ typedef struct _U64_S { u64 v; } U64_S;
                LZ4_WILDCOPY(s, d, e);  \
                d = e;  \
        } while (0)
+
+#endif /* COMMON_LZ4_DEFS_H */
--
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