linux-kernel - [PATCH v1 1/1] modpost: Mark uuid_le type to be suitable only for MEI

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Message-Id: <20221125101249.24931-1-andriy.shevchenko@linux.intel.com>
Date:   Fri, 25 Nov 2022 12:12:49 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     linux-kbuild@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Nathan Chancellor <nathan@...nel.org>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Nicolas Schier <nicolas@...sle.eu>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/1] modpost: Mark uuid_le type to be suitable only for MEI

The uuid_le type is used only in MEI ABI, do not advertise it for others.
While at it, comment out that UUID types are not to be used in a new code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---

If you confused by acrn user of the uuid_le type, the patch to fix that
is pending for v6.2 as well 1dbb4f0235a4 ("virt: acrn: Mark the uuid
field as unused"). Nevertheless this patch doesn't break the things and
hence can go independently to the respective tree.

 scripts/mod/file2alias.c | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index 7df23905fdf1..91c2e7ba5e52 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -34,19 +34,23 @@ typedef Elf64_Addr	kernel_ulong_t;
 typedef uint32_t	__u32;
 typedef uint16_t	__u16;
 typedef unsigned char	__u8;
+
+/* UUID types for backward compatibility, don't use in new code */
 typedef struct {
 	__u8 b[16];
 } guid_t;
 
-/* backwards compatibility, don't use in new code */
-typedef struct {
-	__u8 b[16];
-} uuid_le;
 typedef struct {
 	__u8 b[16];
 } uuid_t;
+
 #define	UUID_STRING_LEN		36
 
+/* MEI UUID type, don't use anywhere else */
+typedef struct {
+	__u8 b[16];
+} uuid_le;
+
 /* Big exception to the "don't include kernel headers into userspace, which
  * even potentially has different endianness and word sizes, since
  * we handle those differences explicitly below */
-- 
2.35.1