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more verbose error message if opening the usb device fails

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This commit is contained in:
Hoernchen 2013-01-12 18:22:45 +01:00
parent f1ac20c371
commit 5d2d5a4ae4
1 changed files with 6 additions and 2 deletions
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8
src/librtlsdr.c
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@ -1330,7 +1330,10 @@ int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index)
r = libusb_open(device, &dev->devh); r = libusb_open(device, &dev->devh);
if (r < 0) { if (r < 0) {
libusb_free_device_list(list, 1); 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; goto err;
} }
@ -1338,7 +1341,8 @@ int rtlsdr_open(rtlsdr_dev_t **out_dev, uint32_t index)
r = libusb_claim_interface(dev->devh, 0); r = libusb_claim_interface(dev->devh, 0);
if (r < 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; goto err;
} }