[PATCH v2 02/11] ACPI: APEI: GHES: add ghes_cper.o stub

[Ahmed Tiba]

Introduce a dedicated ghes_cper translation unit so that follow-on commits
can move helpers out of ghes.c without touching the build logic twice.
This keeps the object in the tree while remaining functionally identical.

Signed-off-by: Ahmed Tiba <ahmed.tiba at arm.com>
---
 drivers/acpi/apei/Makefile    |  2 +-
 drivers/acpi/apei/ghes_cper.c | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/apei/Makefile b/drivers/acpi/apei/Makefile
index 1a0b85923cd4..b3774af70883 100644
--- a/drivers/acpi/apei/Makefile
+++ b/drivers/acpi/apei/Makefile
@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_ACPI_APEI)		+= apei.o
-obj-$(CONFIG_ACPI_APEI_GHES)	+= ghes.o
+obj-$(CONFIG_ACPI_APEI_GHES)	+= ghes.o ghes_cper.o
 # clang versions prior to 18 may blow out the stack with KASAN
 ifeq ($(CONFIG_COMPILE_TEST)_$(CONFIG_CC_IS_CLANG)_$(call clang-min-version, 180000),y_y_)
 KASAN_SANITIZE_ghes.o := n
diff --git a/drivers/acpi/apei/ghes_cper.c b/drivers/acpi/apei/ghes_cper.c
new file mode 100644
index 000000000000..63047322a3d9
--- /dev/null
+++ b/drivers/acpi/apei/ghes_cper.c
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ *
+ * APEI GHES CPER helper translation unit - staging file for helper moves
+ *
+ * Copyright (C) 2026 ARM Ltd.
+ * Author: Ahmed Tiba <ahmed.tiba at arm.com>
+ * Based on ACPI APEI GHES driver.
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/ratelimit.h>
+#include <linux/slab.h>
+
+#include <acpi/apei.h>
+
+#include <asm/fixmap.h>
+#include <asm/tlbflush.h>
+
+#include "apei-internal.h"
+
+/* Helper bodies will be moved here in follow-up commits. */

-- 
2.43.0