automation/eclair: allow parameter name "unused"

Update ECLAIR configuration of MISRA C:2012 Rule 8.3 to deviate
violations involving parameter name "unused" (with an optional
numeric suffix): it makes explicit the intention of not using such
parameter within the function.

Signed-off-by: Federico Serafini <federico.serafini@bugseng.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>

diff --git a/automation/eclair_analysis/ECLAIR/deviations.ecl b/automation/eclair_analysis/ECLAIR/deviations.ecl
index 53f7623454748a82aed32e57b55d5bdb503d10e0..de9ba723fbc7a5577bf6abaa63c3608ecc9c7094 100644 (file)
--- a/automation/eclair_analysis/ECLAIR/deviations.ecl
+++ b/automation/eclair_analysis/ECLAIR/deviations.ecl
@@ -167,6 +167,10 @@ const-qualified."
 -config=MC3R1.R8.3,reports+={deliberate,"any_area(any_loc(file(adopted_decompress_r8_3)))&&any_area(any_loc(file(^xen/include/xen/decompress\\.h$)))"}
 -doc_end
 
+-doc_begin="Parameter name \"unused\" (with an optional numeric suffix) is deliberate and makes explicit the intention of not using such parameter within the function."
+-config=MC3R1.R8.3,reports+={deliberate, "any_area(^.*parameter `unused[0-9]*'.*$)"}
+-doc_end
+
 -doc_begin="The following file is imported from Linux: ignore for now."
 -file_tag+={adopted_time_r8_3,"^xen/arch/x86/time\\.c$"}
 -config=MC3R1.R8.3,reports+={deliberate,"any_area(any_loc(file(adopted_time_r8_3)))&&(any_area(any_loc(file(^xen/include/xen/time\\.h$)))||any_area(any_loc(file(^xen/arch/x86/include/asm/setup\\.h$))))"}

diff --git a/docs/misra/deviations.rst b/docs/misra/deviations.rst
index 41fa5b31b05c2e714c2afc4cba2223fe299c8ba7..eb5ef2bd9dd64c7204f82a35cba7a24db2ff6db5 100644 (file)
--- a/docs/misra/deviations.rst
+++ b/docs/misra/deviations.rst
@@ -157,6 +157,12 @@ Deviations related to MISRA C:2012 Rules:
          - xen/common/unxz.c
          - xen/common/unzstd.c
 
+   * - R8.3
+     - Parameter name "unused" (with an optional numeric suffix) is deliberate
+       and makes explicit the intention of not using such parameter within the
+       function.
+     - Tagged as `deliberate` for ECLAIR.
+
    * - R8.4
      - The definitions present in the files 'asm-offsets.c' for any architecture
        are used to generate definitions for asm modules, and are not called by