USB flash regression between 9.0-BETA1 and r227413
Ed Maste
emaste at freebsd.org
Fri Dec 2 21:43:53 UTC 2011
On Fri, Dec 02, 2011 at 09:44:25PM +0100, Hans Petter Selasky wrote:
> On Friday 02 December 2011 03:25:50 Ed Maste wrote:
> > After rebuilding and installing a new kernel from a couple of weeks ago
> > my embedded USB flash no longer works.
> >
> > Working kernel was:
> > FreeBSD 9.0-BETA1 #1 r225223M: Sat Aug 27 22:21:54 EDT 2011
>
> Can you try to add the no-synchronize cache quirk for your device by using
> usbconfig? Obviously the manufacturer did not test all SCSI commands!
>
> --HPS
Thanks, that does it.
# usbconfig add_quirk UQ_MSC_NO_SYNC_CACHE
This device is:
ugen3.2: <Real SSD eUSB 16GB Micron Technology> at usbus3, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON
bLength = 0x0012
bDescriptorType = 0x0001
bcdUSB = 0x0200
bDeviceClass = 0x0000
bDeviceSubClass = 0x0000
bDeviceProtocol = 0x0000
bMaxPacketSize0 = 0x0040
idVendor = 0x0634
idProduct = 0x0655
bcdDevice = 0x1110
iManufacturer = 0x0001 <retrieving string failed>
iProduct = 0x0002 <retrieving string failed>
iSerialNumber = 0x0003 <retrieving string failed>
bNumConfigurations = 0x0001
Should be easy to quirk now, although it seems there are a number of
devices afflicted with this same problem. I wonder if other operating
systems just don't use this command?
-Ed
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