Date: Fri, 14 Nov 2008 17:10:58 -0500 From: Coleman Kane <cokane@FreeBSD.org> To: Hans Petter Selasky <hselasky@c2i.net> Cc: Diego Depaoli <trebestie@gmail.com>, freebsd-current@freebsd.org Subject: Re: Usb2 and hal issue Message-ID: <1226700658.19638.16.camel@localhost> In-Reply-To: <200811142017.49692.hselasky@c2i.net> References: <83e5fb980811051638n5f9a1a5dr60160ed7e2ed7a1c@mail.gmail.com> <1226687528.19638.4.camel@localhost> <200811142017.49692.hselasky@c2i.net>
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[-- Attachment #1 --] On Fri, 2008-11-14 at 20:17 +0100, Hans Petter Selasky wrote: > Hi Kane! > > Your patch will solve the CPU problem, but will otherwise not fix FreeBSD USB > support under HAL. > > 1) Hal should use "devd" to get attach/detach events. > 2) Hal should use libusb20/libusb to access USB functions and to enumerate USB > devices. > > --HPS Thanks, Yes, after further investigation I found out that it just fixes the CPU utilization issue, but the USB support remains broken. I don't use its USB support all that much, so I didn't even realize this until recently. I guess our old USB code presented /dev/usb0, /dev/usb1, ..., /dev/usbN for N+1 USB controllers. These aren't here anymore so maybe the above suggestion to use libusb now for FreeBSD (which currently gets disabled when configure realizes we're FreeBSD) is the best approach. I managed to get the libusb20 library working with libfprint and the associated pam_fprint and fprint_demo software. It is working really well for me so far. > > On Friday 14 November 2008, Coleman Kane wrote: > > On Thu, 2008-11-06 at 01:38 +0100, Diego Depaoli wrote: > > > Hi all, > > > I don't know how provide further details, but on my system there is > > > something of wrong between new usb2 drivers and hald. > > > Top shows hald's cpu load at 100% while with old drivers it's 2-4%. > > > I tried rebuilding hald, loading/unloading each usb2_* device but > > > nothing changed, so I suspect the problem is located in usb2_core. > > > > I figured out the problem, and I have a solution. As the other person > > mentioned, the device name has changed from "/dev/usb" into "/dev/usb > > " (the space is important). However, the hald daemon doesn't use libusb > > on FreeBSD. Here's a patch which tells hald to look at the new device, > > apply it to the root of your ports collection. > > > > Additionally, I think it is a bug that hald busy-loops trying (and > > failing) to open "/dev/usb". Ideally, I think that hald should put a > > sleep in there of some sort, to give up CPU to something else. > -- Coleman Kane [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (FreeBSD) iEYEABECAAYFAkkd920ACgkQcMSxQcXat5dN6gCffBd2bdvR+sC6cewAGzn2IeL9 HSQAn2KQM1G3VEgoYrXhg/Qjd2YGID9c =yMMl -----END PGP SIGNATURE-----help
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