[xen staging] xen/device_tree: address violations of MISRA C Rule 20.7

[patchbot@xxxxxxx]

commit b51d7f39dc73618c015439dab1f81a86074c591d
Author:     Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
AuthorDate: Tue Mar 19 11:27:58 2024 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Tue Mar 19 11:27:58 2024 +0100

    xen/device_tree: address violations of MISRA C Rule 20.7
    
    MISRA C Rule 20.7 states: "Expressions resulting from the expansion
    of macro parameters shall be enclosed in parentheses". Therefore, some
    macro definitions should gain additional parentheses to ensure that all
    current and future users will be safe with respect to expansions that
    can possibly alter the semantics of the passed-in macro parameter.
    
    No functional change.
    
    Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
 xen/include/xen/device_tree.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/include/xen/device_tree.h b/xen/include/xen/device_tree.h
index 6fe2fa8b21..e6287305a7 100644
--- a/xen/include/xen/device_tree.h
+++ b/xen/include/xen/device_tree.h
@@ -250,7 +250,7 @@ dt_find_interrupt_controller(const struct dt_device_match 
*matches);
     for ( pp = (dn)->properties; (pp) != NULL; pp = (pp)->next )
 
 #define dt_for_each_device_node(dt, dn)                     \
-    for ( dn = dt; (dn) != NULL; dn = (dn)->allnext )
+    for ( dn = (dt); (dn) != NULL; dn = (dn)->allnext )
 
 #define dt_for_each_child_node(dt, dn)                      \
     for ( dn = (dt)->child; (dn) != NULL; dn = (dn)->sibling )
--
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