Re: USBDMSC emulated device does not work on FreeBSD

From: Milan Obuch <>
Date: Fri, 12 Nov 2021 13:22:00 UTC
On Fri, 12 Nov 2021 14:13:08 +0100
Hans Petter Selasky <> wrote:

[ snip ]

> It crashes on synchronize cache:
> Try adding this quirk:
> usbconfig -d ugen1.3 add_quirk UQ_MSC_NO_SYNC_CACHE
> Then re-plug the device.
> --HPS

Could this be done before device attach? Trouble is, after synchronize
crashes, USB firmware crashes as well. This means there is basically no
ugen1.3 device anymore, so doing this command just tells (after some

Adding quirk 'UQ_MSC_NO_SYNC_CACHE' failed, continuing.

Next I must reset the board, but before I am able to do anything, it
crashes again.