From f79f02d5898970b127e4db5168b639ae5f5e3d56 Mon Sep 17 00:00:00 2001
From: wurong <wurong@autoxing.com>
Date: Thu, 17 Mar 2022 14:23:50 +0000
Subject: [PATCH] fix null ptr.

---
 wiringPi/wiringPi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/wiringPi/wiringPi.c b/wiringPi/wiringPi.c
index 445f06b..f63ec0e 100755
--- a/wiringPi/wiringPi.c
+++ b/wiringPi/wiringPi.c
@@ -2451,6 +2451,7 @@ int wiringPiSetup (void)
 
 #else /* CONFIG_ORANGEPI_RK3399  */
 	gpio2_base = (uint32_t *)mmap(0, BLOCK_SIZE, PROT_READ|PROT_WRITE, MAP_SHARED, fd, GPIO2_BASE);
+  gpio = gpio2_base;
 	if ((int32_t)(unsigned long)gpio2_base == -1)
 		return wiringPiFailure(WPI_ALMOST,
 				"wiringPiSetup: mmap (GPIO2_BASE) failed: %s\n", strerror(errno));