diff --git a/scripts/build-whitelist.sh b/scripts/build-whitelist.sh
index 37630c0..6feb9b6 100755
--- a/scripts/build-whitelist.sh
+++ b/scripts/build-whitelist.sh
@@ -10,13 +10,30 @@
 #
 export LC_ALL=C LC_COLLATE=C
 
-# Looks for the rest of the CONFIG options, but exclude those in Kconfig and
-# defconfig files.
+# There are two independent greps. The first pulls out the component parts
+# of CONFIG_SYS_EXTRA_OPTIONS. An example is:
 #
+#	SUN7I_GMAC,AHCI,SATAPWR=SUNXI_GPB(8)
+#
+# We want this to produce:
+#	CONFIG_SUN7I_GMAC
+#	CONFIG_AHCI
+#	CONFIG_SATAPWR
+#
+# The second looks for the rest of the CONFIG options, but excludes those in
+# Kconfig and defconfig files.
+#
+(
+git grep CONFIG_SYS_EXTRA_OPTIONS |sed -n \
+	's/.*CONFIG_SYS_EXTRA_OPTIONS="\(.*\)"/\1/ p' \
+	| tr , '\n' \
+	| sed 's/ *\([A-Za-z0-9_]*\).*/CONFIG_\1/'
+
 git grep CONFIG_ | \
 	egrep -vi "(Kconfig:|defconfig:|README|\.py|\.pl:)" \
 	| tr ' \t' '\n\n' \
-	| sed -n 's/^\(CONFIG_[A-Za-z0-9_]*\).*/\1/p' \
+	| sed -n 's/^\(CONFIG_[A-Za-z0-9_]*\).*/\1/p'
+) \
 	|sort |uniq >scripts/config_whitelist.txt.tmp1;
 
 # Finally, we need a list of the valid Kconfig options to exclude these from