[XEN PATCH 1/6] automation/eclair: address violations of MISRA C Rule 20.7

[Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>]

MISRA C Rule 20.7 states: "Expressions resulting from the expansion
of macro parameters shall be enclosed in parentheses".

The helper macro bitmap_switch has parameters that cannot be parenthesized
in order to comply with the rule, as that would break its functionality.
Moreover, the risk of misuse due developer confusion is deemed not
substantial enough to warrant a more involved refactor, thus the macro
is deviated for this rule.

No functional change.

Signed-off-by: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>
---
 automation/eclair_analysis/ECLAIR/deviations.ecl | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/automation/eclair_analysis/ECLAIR/deviations.ecl 
b/automation/eclair_analysis/ECLAIR/deviations.ecl
index 447c1e6661d1..c2698e7074aa 100644
--- a/automation/eclair_analysis/ECLAIR/deviations.ecl
+++ b/automation/eclair_analysis/ECLAIR/deviations.ecl
@@ -463,6 +463,14 @@ of this macro do not lead to developer confusion, and can 
thus be deviated."
 -config=MC3R1.R20.7,reports+={safe, 
"any_area(any_loc(any_exp(macro(^count_args_$))))"}
 -doc_end
 
+-doc_begin="The arguments of macro bitmap_switch macro can't be parenthesized 
as
+the rule would require, without breaking the functionality of the macro. This 
is
+a specialized local helper macro only used within the bitmap.h header, so it is
+less likely to lead to developer confusion and it is deemed better to deviate 
it."
+-file_tag+={xen_bitmap_h, "^xen/include/xen/bitmap\\.h$"}
+-config=MC3R1.R20.7,reports+={safe, 
"any_area(any_loc(any_exp(macro(loc(file(xen_bitmap_h))&&^bitmap_switch$))))"}
+-doc_end
+
 -doc_begin="Uses of variadic macros that have one of their arguments defined as
 a macro and used within the body for both ordinary parameter expansion and as 
an
 operand to the # or ## operators have a behavior that is well-understood and
-- 
2.34.1