linux-kernel - [PATCH 01/32] ACPICA: Headers: Delete bogus node

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Message-ID: <4818517.GXAFRqVoOG@kreacher>
Date:   Wed, 05 Apr 2023 15:32:06 +0200
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux ACPI <linux-acpi@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Bob Moore <robert.moore@...el.com>
Subject: [PATCH 01/32] ACPICA: Headers: Delete bogus node_array array of pointers from AEST table

From: Jessica Clarke <jrtc27@...c27.com>

ACPICA commit f0c4a06f1dfc4886d4e0c2aa30bc57b10c5a8c53

Like many tables, this is a header followed by multiple subtables of
varying self-identifying types, and ACPICA does not normally add a field
for the subtables, instead relying on pointer arithmetic past the end of
the first header struct, since indexing a flexible array member is
meaningless for variable-length entries. If we really wanted a field for
this, we could use a u8 flexible array member, but it contradicts the
current style. Using void *, however, is categorically wrong, as ACPI
tables never contain native C-language pointers.

Link: https://github.com/acpica/acpica/commit/f0c4a06f
Signed-off-by: Bob Moore <robert.moore@...el.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 include/acpi/actbl2.h | 1 -
 1 file changed, 1 deletion(-)

diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index b2973dbe37ee..2e7e0d5674f6 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -82,7 +82,6 @@

 struct acpi_table_aest {
 	struct acpi_table_header header;
-	void *node_array[];
 };

 /* Common Subtable header - one per Node Structure (Subtable) */
-- 
2.35.3