Date: Wed, 15 Aug 2007 17:41:47 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: freebsd-usb@freebsd.org Cc: Andriy Gapon <avg@icyb.net.ua> Subject: Re: usbd_set_config_no vs. usbd_set_config_index Message-ID: <200708151741.47907.hselasky@c2i.net> In-Reply-To: <46C2D04A.30409@icyb.net.ua> References: <46C2D04A.30409@icyb.net.ua>
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On Wednesday 15 August 2007, Andriy Gapon wrote: > I am curious about a difference between usbd_set_config_no and > usbd_set_config_index. My reason is such: I am trying to use > palm/uppc-kmod to talk to my pocket pc device via usb. When I used the > port in its original shape it gave me the following error each time I > plugged the device: > kernel: ucom0: failed to set configuration, err=STALLED > kernel: device_attach: ucom0 attach returned 6 > > Then, to mimic some other driver I simply changed > usbd_set_config_index() to usbd_set_config_no() in the code, and voila: > kernel: ucom0: <Windows CE Device> ASUS ASUS Windows Mobile Device, rev > 2.00/0.00, addr 3 (rt) > > I am now trying to get synce to actually work. > But I am really curious what my change really did, and I am totally > ignorant about our usb code. > BTW: > FreeBSD 6.2-RELEASE-p3 amd64 > > Thank you in advance for my education. Hi, usbd_set_config_no will search for a matching bConfiguration value. usbd_set_config_index will set the configuration by physical index: 0, 1, 2 ... --HPS
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