That commit might break something but it still looks like the right thing to do.
This is just a symptom of another underlying problem. Find that
problem and fix it.

On Fri, Oct 27, 2017 at 5:03 PM, Marcus Müller <mueller@kit.edu> wrote:
 This reverts commit ba64a7459a43652354990855176a7d8dad5b9d54.

 The mentioned commit leads to nonfunctionality of Fitipower FC0012
 dongles (tested by a small horde of students) and doesn't increase
 functionality on my "RTL-SDR.com" branded R820T-based dongle.
 ---
  src/librtlsdr.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

 diff --git a/src/librtlsdr.c b/src/librtlsdr.c
 index b369a5d..6c079a5 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, GPD, r & ~gpio, 1);
 +       rtlsdr_write_reg(dev, SYSB, GPO, r & ~gpio, 1);
         r = rtlsdr_read_reg(dev, SYSB, GPOE, 1);
         rtlsdr_write_reg(dev, SYSB, GPOE, r | gpio, 1);
  }
 --
 2.13.6