Added support kernel version newer than > 5.3

Makefile

@@ -1,14 +1,20 @@
-obj-m += applespi.o
-obj-m += apple-ibridge.o
-obj-m += apple-ib-tb.o
-obj-m += apple-ib-als.o
-
 CFLAGS_applespi.o = -I$(src)	# for tracing
 
 KVERSION := $(KERNELRELEASE)
 ifeq ($(origin KERNELRELEASE), undefined)
 KVERSION := $(shell uname -r)
 endif
+
+ifneq ($(KVERSION),)
+	ifeq ($(shell expr $(KVERSION) \< 5.3), 1)
+		obj-m += applespi.o
+	endif
+endif
+
+obj-m += apple-ibridge.o
+obj-m += apple-ib-tb.o
+obj-m += apple-ib-als.o
+
 KDIR := /lib/modules/$(KVERSION)/build
 PWD := $(shell pwd)
 

apple-ibridge.c

@@ -843,13 +843,13 @@ static int appleib_probe(struct acpi_device *acpi)
 	return 0;
 }
 
-static int appleib_remove(struct acpi_device *acpi)
+static void appleib_remove(struct acpi_device *acpi)
 {
 	struct appleib_device *ib_dev = acpi_driver_data(acpi);
 
 	hid_unregister_driver(&ib_dev->ib_driver);
 
-	return 0;
+	return;
 }
 
 static int appleib_suspend(struct device *dev)

dkms.conf

@@ -2,13 +2,23 @@ PACKAGE_NAME="applespi"
 PACKAGE_VERSION="0.1"
 CLEAN="make clean"
 MAKE="make"
-BUILT_MODULE_NAME[0]="applespi"
-BUILT_MODULE_NAME[1]="apple-ibridge"
-BUILT_MODULE_NAME[2]="apple-ib-tb"
-BUILT_MODULE_NAME[3]="apple-ib-als"
-DEST_MODULE_LOCATION[0]="/updates"
-DEST_MODULE_LOCATION[1]="/updates"
-DEST_MODULE_LOCATION[2]="/updates"
-DEST_MODULE_LOCATION[3]="/updates"
+if [ "$(uname -r | cut -d. -f1-2)" \< "5.3" ]; then
+    BUILT_MODULE_NAME[0]="applespi"
+    BUILT_MODULE_NAME[1]="apple-ibridge"
+    BUILT_MODULE_NAME[2]="apple-ib-tb"
+    BUILT_MODULE_NAME[3]="apple-ib-als"
+    DEST_MODULE_LOCATION[0]="/updates"
+    DEST_MODULE_LOCATION[1]="/updates"
+    DEST_MODULE_LOCATION[2]="/updates"
+    DEST_MODULE_LOCATION[3]="/updates"
+else
+    BUILT_MODULE_NAME[0]="apple-ibridge"
+    BUILT_MODULE_NAME[1]="apple-ib-tb"
+    BUILT_MODULE_NAME[2]="apple-ib-als"
+    DEST_MODULE_LOCATION[0]="/updates"
+    DEST_MODULE_LOCATION[1]="/updates"
+    DEST_MODULE_LOCATION[2]="/updates"
+fi
+
 AUTOINSTALL="yes"
 REMAKE_INITRD="yes"