From ba64a7459a43652354990855176a7d8dad5b9d54 Mon Sep 17 00:00:00 2001
From: Lucas Teske <lucas@teske.net.br>
Date: Wed, 17 Aug 2016 20:31:33 -0300
Subject: [PATCH] lib: fix direction bit in GPIO code

source: http://lea.hamradio.si/~s57uuu/mischam/rtlsdr/ports.html

* Removed unnecessary comment of old code.
Signed-off-by: Fabian P. Schmidt <kerel-fs@gmx.de>
Signed-off-by: Steve Markgraf <steve@steve-m.de>
---
 src/librtlsdr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/librtlsdr.c b/src/librtlsdr.c
index 9b7ba52..e2c3c73 100644
--- a/src/librtlsdr.c
+++ b/src/librtlsdr.c
@@ -570,7 +570,7 @@ void rtlsdr_set_gpio_output(rtlsdr_dev_t *dev, uint8_t gpio)
 	gpio = 1 << gpio;
 
 	r = rtlsdr_read_reg(dev, SYSB, GPD, 1);
-	rtlsdr_write_reg(dev, SYSB, GPO, r & ~gpio, 1);
+	rtlsdr_write_reg(dev, SYSB, GPD, r & ~gpio, 1);
 	r = rtlsdr_read_reg(dev, SYSB, GPOE, 1);
 	rtlsdr_write_reg(dev, SYSB, GPOE, r | gpio, 1);
 }