commit 2e22c0cace3cdab677c412f791697bebd0a22819
Author: Alex Wied <alex@radix.bio>
Date:   Wed Aug 21 13:32:46 2019 -0400

    Add DKMS support

diff --git a/Makefile.real b/Makefile.real
index 1493f22e5..bc0e72a93 100644
--- a/Makefile.real
+++ b/Makefile.real
@@ -127,7 +127,10 @@ uninstall:
 	@echo Reboot.
 	@echo
 
+EXCLUDE_CLEAN := kconf/zconf.lex.c kconf/zconf.tab.c
 .PHONY: clean
 clean:
+	@$(foreach f, $(EXCLUDE_CLEAN), mv $(f) $(f).orig;)
 	@$(MAKE) -f Makefile.build clean
 	@$(MAKE) -C kconf clean
+	@$(foreach f, $(EXCLUDE_CLEAN), mv $(f).orig $(f);)
diff --git a/backport-include/linux/compiler.h b/backport-include/linux/compiler.h
index 53c069df1..adc5a2403 100644
--- a/backport-include/linux/compiler.h
+++ b/backport-include/linux/compiler.h
@@ -92,4 +92,8 @@ static __always_inline void __write_once_size(volatile void *p, void *res, int s
 #define OPTIMIZER_HIDE_VAR(var) barrier()
 #endif
 
+#ifndef __copy
+#define __copy(x)
+#endif
+
 #endif /* __BACKPORT_LINUX_COMPILER_H */
diff --git a/backport-include/linux/module.h b/backport-include/linux/module.h
index 1a2c82f45..877491eec 100644
--- a/backport-include/linux/module.h
+++ b/backport-include/linux/module.h
@@ -33,7 +33,7 @@ extern void backport_dependency_symbol(void);
 		backport_dependency_symbol();				\
 		return initfn();					\
 	}								\
-	int init_module(void) __attribute__((cold,alias("__init_backport")));\
+	int init_module(void) __copy(__init_backport) __attribute__((cold,alias("__init_backport")));\
 	BACKPORT_MOD_VERSIONS
 
 /*
@@ -58,7 +58,7 @@ extern void backport_dependency_symbol(void);
 		exitfn();						\
 		rcu_barrier();						\
 	}								\
-	void cleanup_module(void) __attribute__((cold,alias("__exit_compat")));
+	void cleanup_module(void) __copy(__exit_compat) __attribute__((cold,alias("__exit_compat")));
 #endif
 
 #if LINUX_VERSION_IS_LESS(3,3,0)
diff --git a/dkms.conf b/dkms.conf
new file mode 100644
index 000000000..43d0eedfe
--- /dev/null
+++ b/dkms.conf
@@ -0,0 +1,41 @@
+PACKAGE_NAME="backport-iwlwifi"
+PACKAGE_VERSION="git"
+AUTOINSTALL="yes"
+
+BUILT_MODULE_NAME[0]="compat"
+BUILT_MODULE_LOCATION[0]="compat"
+DEST_MODULE_LOCATION[0]="/updates"
+
+BUILT_MODULE_NAME[1]="iwlwifi"
+BUILT_MODULE_LOCATION[1]="drivers/net/wireless/intel/iwlwifi"
+DEST_MODULE_LOCATION[1]="/updates"
+
+BUILT_MODULE_NAME[2]="iwlxvt"
+BUILT_MODULE_LOCATION[2]="drivers/net/wireless/intel/iwlwifi/xvt"
+DEST_MODULE_LOCATION[2]="/updates"
+
+BUILT_MODULE_NAME[3]="iwlmvm"
+BUILT_MODULE_LOCATION[3]="drivers/net/wireless/intel/iwlwifi/mvm"
+DEST_MODULE_LOCATION[3]="/updates"
+
+BUILT_MODULE_NAME[4]="mac80211"
+BUILT_MODULE_LOCATION[4]="net/mac80211"
+DEST_MODULE_LOCATION[4]="/updates"
+
+BUILT_MODULE_NAME[5]="cfg80211"
+BUILT_MODULE_LOCATION[5]="net/wireless"
+DEST_MODULE_LOCATION[5]="/updates"
+
+# Find out how many CPU cores can be use if we pass appropriate -j option to make.
+# DKMS could use all cores on multicore systems to build the kernel module.
+num_cpu_cores()
+{
+  if [ -x /usr/bin/nproc ]; then
+    nproc
+  else
+    echo "1"
+  fi
+}
+
+MAKE="'make' -j$(num_cpu_cores) KLIB=/lib/modules/$kernelver"
+CLEAN="'make' clean"
diff --git a/kconf/confdata.c b/kconf/confdata.c
index 297b079ae..ed1ff5d7c 100644
--- a/kconf/confdata.c
+++ b/kconf/confdata.c
@@ -770,10 +770,13 @@ int conf_write(const char *name)
 	} else
 		basename = conf_get_configname();
 
-	sprintf(newname, "%s%s", dirname, basename);
+	if (snprintf(newname, sizeof newname, "%s%s", dirname, basename) < 0)
+		return 1;
+
 	env = getenv("KCONFIG_OVERWRITECONFIG");
 	if (!env || !*env) {
-		sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
+		if (snprintf(tmpname, sizeof tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()) < 0)
+			return 1;
 		out = fopen(tmpname, "w");
 	} else {
 		*tmpname = 0;