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osmo-fl2k
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lib: use interface 0 altsetting 1 instead of interface 1 

This makes osmo-fl2k work again with Linux 5.5.0-rc6 or later,
as the FL2000 shares the endpoints for interface 0 and 1, which
is forbidden by the USB spec and the Kernel will not ignore this
anymore.

See: https://marc.info/?l=linux-usb&m=157944230213296&w=2
This commit is contained in:
Steve Markgraf 2020-01-19 16:45:20 +01:00
parent 4b72aab349
commit a9f3771eb6
1 changed files with 3 additions and 3 deletions
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6
src/libosmo-fl2k.c
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@ -2,7 +2,7 @@
* osmo-fl2k, turns FL2000-based USB 3.0 to VGA adapters into
* low cost DACs
*
* Copyright (C) 2016-2018 by Steve Markgraf <steve@steve-m.de>
* Copyright (C) 2016-2020 by Steve Markgraf <steve@steve-m.de>
*
* SPDX-License-Identifier: GPL-2.0+
*
@ -444,10 +444,10 @@ int fl2k_open(fl2k_dev_t **out_dev, uint32_t index)
fprintf(stderr, "usb_claim_interface 0 error %d\n", r);
goto err;
}
r = libusb_claim_interface(dev->devh, 1);
r = libusb_set_interface_alt_setting(dev->devh, 0, 1);
if (r < 0) {
fprintf(stderr, "usb_claim_interface 1 error %d\n", r);
fprintf(stderr, "Error enabling IF 0 altsetting 1: %d\n", r);
goto err;
}