X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=config%2Fkernel-get-disk-ro.m4;h=13ed81217ee3ea472efbc1e237e59dcd039483d7;hb=6a7c0ccca44ad02c476a111d8f7911fc8b12fff7;hp=365afdbc699fc76ea9014d4e9d66ce8f7ae28207;hpb=c9c0d073da561bcbefbdf09c87fc75b227415619;p=zfs.git

diff --git a/config/kernel-get-disk-ro.m4 b/config/kernel-get-disk-ro.m4
index 365afdb..13ed812 100644
--- a/config/kernel-get-disk-ro.m4
+++ b/config/kernel-get-disk-ro.m4
@@ -3,6 +3,8 @@ dnl # 2.6.x API change
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_GET_DISK_RO], [
 	AC_MSG_CHECKING([whether get_disk_ro() is available])
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}"
 	ZFS_LINUX_TRY_COMPILE([
 		#include <linux/blkdev.h>
 	],[
@@ -15,4 +17,5 @@ AC_DEFUN([ZFS_AC_KERNEL_GET_DISK_RO], [
 	],[
 		AC_MSG_RESULT(no)
 	])
+	EXTRA_KCFLAGS="$tmp_flags"
 ])