Unused function error compiling, with fix

[jephthai]

I was compiling the driver on an ODroid M1S, and encountered a DKMS build error. The log file indicated an error compiling rtw_ap.c, complaining about an unused function (specifically, issue_aka_chk_frame). I guess this is because the call to it on line 690 is blocked because of the configuration of CONFIG_ACTIVE_KEEP_ALIVE_CHECK?

Anyway, I uncommented line 7 in the Makefile, as shown below, and was able to compile the module just fine:

diff --git a/Makefile b/Makefile
index 6f95ff1..e1d50e8 100755
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ EXTRA_CFLAGS += -Wno-unused-variable
 EXTRA_CFLAGS += -Wno-unused-value
 EXTRA_CFLAGS += -Wno-unused-label
 EXTRA_CFLAGS += -Wno-unused-parameter
-#EXTRA_CFLAGS += -Wno-unused-function
+EXTRA_CFLAGS += -Wno-unused-function
 #EXTRA_CFLAGS += -Wno-implicit-fallthrough
 EXTRA_CFLAGS += -Wno-cast-function-type
 EXTRA_CFLAGS += -Wno-missing-declarations