Date: Fri, 28 Oct 2011 09:12:52 +0200 From: Hans Petter Selasky <hselasky@c2i.net> To: Gustau =?iso-8859-15?q?P=E9rez?= <gperez@entel.upc.edu> Cc: freebsd-usb@freebsd.org Subject: Re: Quirk for a USB mass storage device Message-ID: <201110280912.52103.hselasky@c2i.net> In-Reply-To: <4EAA3D37.4060909@entel.upc.edu> References: <4EA9127E.80504@entel.upc.edu> <201110272028.40342.hselasky@c2i.net> <4EAA3D37.4060909@entel.upc.edu>
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On Friday 28 October 2011 07:27:19 Gustau P=E9rez wrote: > Al 27/10/2011 20:28, En/na Hans Petter Selasky ha escrit: > > On Thursday 27 October 2011 10:12:46 Gustau P=E9rez wrote: > >> Hi, > >> =20 > >> I'm running FreeBSD 10.0 r226042 on AMD64 and I'm having problems > >>=20 > >> with the following device: > >> umass0: <Kingston DataTraveler 200, class 0/0, rev 2.00/1.10, > >>=20 > >> addr 7> on usbus0 > >>=20 > >> umass0: SCSI over Bulk-Only; quirks =3D 0x4001 > >> umass0: Get Max Lun not supported (USB_ERR_TIMEOUT) > >> umass0:5:0:-1: Attached to scbus5 > >> =20 > >> as you can see, UQ_MSC_NO_GETMAXLUN should be set to use the device. > >>=20 > >> As it is a 64Gb mass storage I would like to use it. > >>=20 > >> I tried to manually add the quirk and it worked. Later on I tried > >>=20 > >> with 9.0Beta2/i386 on the same machine and the problem also appeared. = So > >> I made a patch (which works on CURRENT, did not try with STABLE) to add > >> the quirk, which is attached. > >>=20 > >> Hans: is it necessary to fill a PR with the patch or would it be > >>=20 > >> enough with the inline patch? > >=20 > > Hi Gustau, > >=20 > > Does this device work at all without this patch? > >=20 > > I was thinking to auto detect this behaviour instead. > >=20 > > --HPS >=20 > It did not work without the quirk. The corresponding /dev/daX device > never appeared. After manually setting the quirk I could use it by > unplugging and re-plugging the device. >=20 > I see a few number of devices using this quirk. However many of them > use other quirks too. So auto detecting this behavior would be good for > those pseudo-scsi devices having only problems with LUN detection. >=20 > Please let me know if you want me to test any patch or you want me to > check any code. >=20 > Gus Try to set the no synchronize cache quirk instead. Does that solve the prob= lem=20 aswell? =2D-HPS
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