Date: Mon, 30 Aug 2010 19:22:49 -0500 From: Jim Bryant <kc5vdj.freebsd@gmail.com> To: Alexander Leidinger <Alexander@Leidinger.net> Cc: usb@FreeBSD.org Subject: Re: Porting an USB software from linux (libusb) Message-ID: <4C7C4B59.3090207@gmail.com> In-Reply-To: <20100830174232.56765zlyg2rhuhgc@webmail.leidinger.net> References: <20100830174232.56765zlyg2rhuhgc@webmail.leidinger.net>
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easy fix. just drop the _np
the functions are there under legacy naming.
Alexander Leidinger wrote:
> Hi,
>
> I try to port a linux userland USB program and I get the following
> error message when trying to link to libusb (current as of r210105):
> ---snip---
> cc -lusb -lm -o fowsr fowsr.o
> fowsr.o(.text+0x1546): In function `CUSB_Open':
> : undefined reference to `usb_get_driver_np'
> fowsr.o(.text+0x1710): In function `CUSB_Open':
> : undefined reference to `usb_detach_kernel_driver_np'
> gmake: *** [fowsr] Fehler 1
> ---snip---
>
> Do I need those functions on FreeBSD (the device may show up as a HID
> device, I hadn't a chance to attach it to a FreeBSD box yet), or can I
> just remove them (I could make sure the HID driver is not loaded in
> the kernel)?
>
> Here is the related source:
> ---snip---
> devh = usb_open(dev);
> assert(devh);
>
> signal(SIGTERM, release_usb_device);
>
> ret = usb_get_driver_np(devh, 0, buf, sizeof(buf));
> printf("usb_get_driver_np returned %d\n", ret);
> if (ret == 0) {
> printf("interface 0 already claimed by driver
> \\'%s\\', attempting to detach it\n", buf);
> ret = usb_detach_kernel_driver_np(devh, 0);
> printf("usb_detach_kernel_driver_np returned %d\n", ret);
> }
> ret = usb_claim_interface(devh, 0);
> if (ret != 0) {
> printf("claim failed with error %d\n", ret);
> exit(1);
> }
>
> ret = usb_set_altinterface(devh, 0);
> ---snip---
>
> Bye,
> Alexander.
>
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