From acebf24cb9a9331be2c79a2157af45ff9c7de786 Mon Sep 17 00:00:00 2001
From: "Michael S. Tsirkin" <mst@mellanox.co.il>
Date: Tue, 17 Apr 2007 10:34:08 +0300
Subject: [PATCH] Fix segfault in case first open succeeds but second open
 fails.

Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il>
---
 flint.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/flint.cpp b/flint.cpp
index 4d26128..ca6b372 100644
--- a/flint.cpp
+++ b/flint.cpp
@@ -1746,7 +1746,8 @@ bool ParallelFlash::init_gpios() {
 }
 
 void ParallelFlash::close() {
-
+    if (!_mf)
+	    return;
     // Restore origin values
     mwrite4(_mf, GPIO_DIR_L, _dir);
     mwrite4(_mf, GPIO_POL_L, _pol);
@@ -2728,6 +2729,8 @@ bool SpiFlash::init_gpios() {
 }
 
 void SpiFlash::close() {
+    if (!_mf)
+	    return;
     // Chip reset does not reset the chip sellect - Make sure after reset
     // boot loads FW from SPI 0.
     set_bank(0);
-- 
2.41.0