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[PATCH 09/14] ACPI: address a Misra rule 11.8 violation in Arm code
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Wed, 2 Sep 2026 08:34:09 +0200
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- Cc: Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Roger Pau Monné <roger@xxxxxxxxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>
- Delivery-date: Wed, 02 Sep 2026 06:34:14 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Outside of drivers/acpi/tables/ (which is excluded from Eclair reporting
for dubious reasons), arch/arm/acpi/domain_build.c is the only user of
ACPI_COMPARE_NAME(). Make the macro const correct, at the expense of
introducing a "const" variant of ACPI_CAST_PTR(), and at the expense of
altering an imported file.
No functional change intended.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
--- a/xen/include/acpi/acmacros.h
+++ b/xen/include/acpi/acmacros.h
@@ -103,6 +103,7 @@
* Pointer manipulation
*/
#define ACPI_CAST_PTR(t, p) ((t *) (acpi_uintptr_t) (p))
+#define ACPI_CAST_CPTR(t, p) ((const t *) (const acpi_uintptr_t)
(p))
#define ACPI_CAST_INDIRECT_PTR(t, p) ((t **) (acpi_uintptr_t) (p))
#define ACPI_ADD_PTR(t,a,b) ACPI_CAST_PTR (t, (ACPI_CAST_PTR
(u8,(a)) + (acpi_native_uint)(b)))
#define ACPI_PTR_DIFF(a,b) (acpi_native_uint) (ACPI_CAST_PTR
(u8,(a)) - ACPI_CAST_PTR (u8,(b)))
@@ -116,9 +117,12 @@
#define ACPI_PTR_TO_PHYSADDR(i) ACPI_TO_INTEGER(i)
#ifndef ACPI_MISALIGNMENT_NOT_SUPPORTED
-#define ACPI_COMPARE_NAME(a,b) (*ACPI_CAST_PTR (u32,(a)) ==
*ACPI_CAST_PTR (u32,(b)))
+#define ACPI_COMPARE_NAME(a, b) (*ACPI_CAST_CPTR (u32, a) == \
+ *ACPI_CAST_CPTR (u32, b))
#else
-#define ACPI_COMPARE_NAME(a,b) (!ACPI_STRNCMP (ACPI_CAST_PTR
(char,(a)), ACPI_CAST_PTR (char,(b)), ACPI_NAME_SIZE))
+#define ACPI_COMPARE_NAME(a, b) (!ACPI_STRNCMP (ACPI_CAST_CPTR (char,
a), \
+ ACPI_CAST_CPTR (char,
b), \
+ ACPI_NAME_SIZE))
#endif
/*
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