linux-kernel - [PATCH v2 1/2] HID: uclogic: Avoid linking common code into multiple modules

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Date: Fri, 14 Jun 2024 18:16:05 +0200
From: José Expósito <jose.exposito89@...il.com>
To: jikos@...nel.org
Cc: benjamin.tissoires@...hat.com,
	arnd@...db.de,
	linux-input@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	José Expósito <jose.exposito89@...il.com>
Subject: [PATCH v2 1/2] HID: uclogic: Avoid linking common code into multiple modules

The hid-uclogic-params.o and hid-uclogic-rdesc.o files are linked
into both the driver module and the unit test, which triggers a
W=1 warning:

scripts/Makefile.build:236: drivers/hid/Makefile: hid-uclogic-rdesc.o is added to multiple modules: hid-uclogic hid-uclogic-test
scripts/Makefile.build:236: drivers/hid/Makefile: hid-uclogic-params.o is added to multiple modules: hid-uclogic hid-uclogic-test

Avoids this by moving these two files into a separate module
that is used by the driver and the unit test.

Acked-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: José Expósito <jose.exposito89@...il.com>
---
 drivers/hid/Makefile                 | 6 ++----
 drivers/hid/hid-uclogic-rdesc-test.c | 2 ++
 drivers/hid/hid-uclogic-rdesc.c      | 2 ++
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index ce71b53ea6c5..e40f1ddebbb7 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -154,10 +154,8 @@ obj-$(CONFIG_HID_WINWING)	+= hid-winwing.o
 obj-$(CONFIG_HID_SENSOR_HUB)	+= hid-sensor-hub.o
 obj-$(CONFIG_HID_SENSOR_CUSTOM_SENSOR)	+= hid-sensor-custom.o
 
-hid-uclogic-test-objs		:= hid-uclogic-rdesc.o \
-				   hid-uclogic-params.o \
-				   hid-uclogic-rdesc-test.o
-obj-$(CONFIG_HID_KUNIT_TEST)	+= hid-uclogic-test.o
+hid-uclogic-test-objs		:= hid-uclogic-rdesc-test.o
+obj-$(CONFIG_HID_KUNIT_TEST)	+= hid-uclogic.o hid-uclogic-test.o
 
 obj-$(CONFIG_USB_HID)		+= usbhid/
 obj-$(CONFIG_USB_MOUSE)		+= usbhid/
diff --git a/drivers/hid/hid-uclogic-rdesc-test.c b/drivers/hid/hid-uclogic-rdesc-test.c
index 90bf4e586e01..d6b18213f45f 100644
--- a/drivers/hid/hid-uclogic-rdesc-test.c
+++ b/drivers/hid/hid-uclogic-rdesc-test.c
@@ -9,6 +9,8 @@
 #include <kunit/test.h>
 #include "./hid-uclogic-rdesc.h"
 
+MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING);
+
 struct uclogic_template_case {
 	const char *name;
 	const __u8 *template;
diff --git a/drivers/hid/hid-uclogic-rdesc.c b/drivers/hid/hid-uclogic-rdesc.c
index b6dfdf6356a6..6c7a90417569 100644
--- a/drivers/hid/hid-uclogic-rdesc.c
+++ b/drivers/hid/hid-uclogic-rdesc.c
@@ -17,6 +17,7 @@
 #include "hid-uclogic-rdesc.h"
 #include <linux/slab.h>
 #include <asm/unaligned.h>
+#include <kunit/visibility.h>
 
 /* Fixed WP4030U report descriptor */
 __u8 uclogic_rdesc_wp4030u_fixed_arr[] = {
@@ -1242,3 +1243,4 @@ __u8 *uclogic_rdesc_template_apply(const __u8 *template_ptr,
 
 	return rdesc_ptr;
 }
+EXPORT_SYMBOL_IF_KUNIT(uclogic_rdesc_template_apply);
-- 
2.45.2