diff options
Diffstat (limited to 'src/librtlsdr.c')
| -rw-r--r-- | src/librtlsdr.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/src/librtlsdr.c b/src/librtlsdr.c index b0a95d8..e6e3e8d 100644 --- a/src/librtlsdr.c +++ b/src/librtlsdr.c @@ -1330,7 +1330,10 @@ int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index) r = libusb_open(device, &dev->devh); if (r < 0) { libusb_free_device_list(list, 1); - fprintf(stderr, "usb_open error %d\n", r); + fprintf(stderr, "usb_open error %s\n", libusb_error_name(r)); + if(r == LIBUSB_ERROR_ACCESS) + fprintf(stderr, "Please fix the device permissions, e.g. " + "by installing the udev rules file rtl-sdr.rules\n"); goto err; } @@ -1338,7 +1341,8 @@ int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index) r = libusb_claim_interface(dev->devh, 0); if (r < 0) { - fprintf(stderr, "usb_claim_interface error %d\n", r); + fprintf(stderr, "usb_claim_interface error %s\n", + libusb_error_name(r)); goto err; } |