From a436a73ce06f56bc5439948ba123ded06df1f93c Mon Sep 17 00:00:00 2001
From: litong <litong20@lenovo.com>
Date: Wed, 29 Jul 2020 17:53:01 +0800
Subject: [PATCH] touchscreen_mmi: fix undefined symbol error on kernel 5.4

TP:
There is a compilation error on kernel 5.4:
	ERROR: sensors_classdev_unregister undefined!
	ERROR: sensors_classdev_register undefined!

So specific the depended module sensors symbol file.

NO_PROP_NEEDED: <only for v(CR) project>

Change-Id: I4d0acbc01e8c91c6d0226e26e1cd408d55b8df9c
Reviewed-on: https://gerrit.mot.com/1708522
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Jichao Zou <zoujc@motorola.com>
Submit-Approved: Jira Key
---
 drivers/input/touchscreen/touchscreen_mmi/Kbuild | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/input/touchscreen/touchscreen_mmi/Kbuild b/drivers/input/touchscreen/touchscreen_mmi/Kbuild
index 599d792841ed..8a233c0d19c2 100644
--- a/drivers/input/touchscreen/touchscreen_mmi/Kbuild
+++ b/drivers/input/touchscreen/touchscreen_mmi/Kbuild
@@ -17,3 +17,5 @@ endif
 
 obj-m := touchscreen_mmi.o
 touchscreen_mmi-objs := touchscreen_mmi_class.o touchscreen_mmi_panel.o touchscreen_mmi_notif.o touchscreen_mmi_gesture.o
+
+KBUILD_EXTRA_SYMBOLS += $(CURDIR)/$(KBUILD_EXTMOD)/../../../sensors/Module.symvers