Date: Fri, 15 May 2009 13:30:35 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: thierry.herbelot@free.fr Cc: freebsd-usb@FreeBSD.org Subject: Re: Asynchronous bulk transfers in usb2 ? Message-ID: <20090515.133035.452788619.imp@bsdimp.com> In-Reply-To: <200905152119.07569.thierry.herbelot@free.fr> References: <200905151857.21361.thierry.herbelot@free.fr> <200905152106.48104.hselasky@c2i.net> <200905152119.07569.thierry.herbelot@free.fr>
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In message: <200905152119.07569.thierry.herbelot@free.fr>
Thierry Herbelot <thierry.herbelot@free.fr> writes:
: Le Friday 15 May 2009, Hans Petter Selasky a =E9crit :
: > On Friday 15 May 2009, Thierry Herbelot wrote:
: > > Hello,
: > >
: > > This is a follow-on for :
: > > http://www.mail-archive.com/freebsd-usb%40freebsd.org/msg04000.ht=
ml,
: > > where a code snippet was posted to use the new USB stack.
: > >
: > > I've just recompiled my old experiment (which used to work at the=
time),
: > > and it does not seem to work with today's current (I made the cos=
metic
: > > changes due to the change of name for the libusb, so the compile =
at least
: > > is OK).
: > >
: > > the issue is that the following loop (copied from the previous ar=
chived
: > > post) is never executed :
: > > --------------------
: > > while ( ( pdev =3D libusb20_be_device_foreach ( pbe, pdev ) ) )
: > > {
: > > ddesc =3D libusb20_dev_get_device_desc ( pdev );
: > > printf("vendor %x prod %x\n", ddesc->idVendor, ddesc->idProduct=
);
: > >
: > > /* stop with the first found device */
: > > if ( ddesc->idVendor =3D=3D MY_VENDOR_ID )
: > > {
: > > libusb20_be_dequeue_device ( pbe, pdev );
: > > break;
: > > }
: > > }
: > > --------------------
: > >
: > > pdev is always NULL at the end of the loop (even though a USB dev=
ice has
: > > been plugged, has been detected by the USB stack and is correctly=
seen,
: > > as per usbconfig, with the expected idVendor).
: > >
: > > I have not followed the recent developments on the USB stack : ma=
ybe some
: > > change is needed in my code ?
: >
: > Check permissions for devices under /dev/usb
: =
: *blush* (this is indeed the reason)
: =
: but .... this used to work ;-) (maybe it did no longer work after the=
device =
: nodes were added for the USB devices)
: =
: what is the recommended way to change the permissions for the usb dev=
ice =
: nodes ? (with devd ?)
: =
: in the meantime, I'll try to run from root ...
I use devfs.rules:
[localrules=3D10]
add path 'usb/*' mode 0660
and put my trusted to use usb users into group operator.
Warner
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