X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=config%2Fkernel-blk-rq-bytes.m4;h=a95f8a8ea390484368f44f36594aabeb7b9fe7ca;hb=1a33036df9de8f95aea38ec0d9e483106d1abaa4;hp=da83405cbee740cd9ca97204bd63137ae91f9ac9;hpb=c9c0d073da561bcbefbdf09c87fc75b227415619;p=zfs.git

diff --git a/config/kernel-blk-rq-bytes.m4 b/config/kernel-blk-rq-bytes.m4
index da83405..a95f8a8 100644
--- a/config/kernel-blk-rq-bytes.m4
+++ b/config/kernel-blk-rq-bytes.m4
@@ -6,6 +6,8 @@ dnl blk_rq_bytes() helper was changed to a static inline which we can use.
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_BYTES], [
 	AC_MSG_CHECKING([whether blk_rq_bytes() is available])
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}"
 	ZFS_LINUX_TRY_COMPILE([
 		#include <linux/blkdev.h>
 	],[
@@ -35,4 +37,5 @@ AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_BYTES], [
 		AC_DEFINE(HAVE_BLK_RQ_BYTES_GPL_ONLY, 1,
 		          [blk_rq_bytes() is GPL-only])
 	])
+	EXTRA_KCFLAGS="$tmp_flags"
 ])