From 859b527f00ad1364a4152c0365e2e5ef5a6bf20a Mon Sep 17 00:00:00 2001
From: Jianxin Xiong <jianxin.xiong@intel.com>
Date: Thu, 12 May 2016 10:23:47 -0700
Subject: [PATCH] IB/hfi1: Keep SC_USER as the last send context type

SC_USER needs to be the last send context type to ensure other
send context types get their allocation when num_user_contexts
is set to a large number.

This fixes a panic when the module parameter num_user_contexts
is set to 141 and larger.

Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
---
 drivers/staging/rdma/hfi1/pio.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/rdma/hfi1/pio.h b/drivers/staging/rdma/hfi1/pio.h
index 53a08edb7f64..464cbd27b975 100644
--- a/drivers/staging/rdma/hfi1/pio.h
+++ b/drivers/staging/rdma/hfi1/pio.h
@@ -49,10 +49,10 @@
 
 /* send context types */
 #define SC_KERNEL 0
-#define SC_ACK    1
-#define SC_USER   2
-#define SC_VL15   3
-#define SC_MAX    4
+#define SC_VL15   1
+#define SC_ACK    2
+#define SC_USER   3	/* must be the last one: it may take all left */
+#define SC_MAX    4	/* count of send context types */
 
 /* invalid send context index */
 #define INVALID_SCI 0xff