From 7a9e3c0b3d285cf0a9ac9c3c7f818ab9c74b6a4d Mon Sep 17 00:00:00 2001
From: Potnuri Bharat Teja <bharat@chelsio.com>
Date: Thu, 9 Feb 2017 17:16:03 +0530
Subject: [PATCH] compat/cxgb4: Support for RHEL 7.0 in rdma.m4

Check if idr_is_empty() is defined.

Signed-off-by: Potnuri Bharat Teja <bharat@chelsio.com>
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
---
 config/rdma.m4 | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/config/rdma.m4 b/config/rdma.m4
index d8d0d32..0f13391 100644
--- a/config/rdma.m4
+++ b/config/rdma.m4
@@ -903,6 +903,36 @@ AC_DEFUN([LINUX_CONFIG_COMPAT],
 		AC_MSG_RESULT(no)
 	])
 
+	AC_MSG_CHECKING([if netdevice.h has __dev_uc_sync])
+	LB_LINUX_TRY_COMPILE([
+		#include <linux/netdevice.h>
+	],[
+		__dev_uc_sync(NULL, NULL, NULL);
+
+		return 0;
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE___DEV_UC_SYNC, 1,
+			  [__dev_uc_sync is defined])
+	],[
+		AC_MSG_RESULT(no)
+	])
+
+	AC_MSG_CHECKING([if netdevice.h has __dev_mc_sync])
+	LB_LINUX_TRY_COMPILE([
+		#include <linux/netdevice.h>
+	],[
+		__dev_mc_sync(NULL, NULL, NULL);
+
+		return 0;
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE___DEV_MC_SYNC, 1,
+			  [__dev_mc_sync is defined])
+	],[
+		AC_MSG_RESULT(no)
+	])
+
 	AC_MSG_CHECKING([if netdevice.h has netdev_txq_bql_complete_prefetchw])
 	LB_LINUX_TRY_COMPILE([
 		#include <linux/netdevice.h>
@@ -2177,6 +2207,20 @@ AC_DEFUN([LINUX_CONFIG_COMPAT],
 		AC_MSG_RESULT(no)
 	])
 
+	AC_MSG_CHECKING([if idr.h has idr_is_empty])
+	LB_LINUX_TRY_COMPILE([
+		#include <linux/idr.h>
+	],[
+		bool x = idr_is_empty(NULL);
+		return 0;
+	],[
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_IDR_IS_EMPTY, 1,
+			  [idr_is_empty is defined])
+	],[
+		AC_MSG_RESULT(no)
+	])
+
 	AC_MSG_CHECKING([if completion.h has reinit_completion])
 	LB_LINUX_TRY_COMPILE([
 		#include <linux/completion.h>
-- 
2.41.0