Date: Mon, 5 Sep 2016 10:46:12 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Andriy Voskoboinyk <avos@freebsd.org>, Adrian Chadd <adrian@freebsd.org> Cc: "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org>, "freebsd-usb@freebsd.org" <freebsd-usb@freebsd.org> Subject: Re: Deadlock between device_detach() and usbd_do_request_flags() Message-ID: <55cff8ce-6132-53ec-3419-d27286dce622@selasky.org> In-Reply-To: <4cf378ff-63e1-7cdc-6120-9578fceec20d@selasky.org> References: <op.ynaawb2n4dikkl@localhost> <4cf378ff-63e1-7cdc-6120-9578fceec20d@selasky.org>
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On 09/05/16 09:53, Hans Petter Selasky wrote: > > Hi, > > I think the right solution is to let usbd_do_request_flags() use its own > SX lock for synchronization, instead of re-using the enumeration SX > lock. What do you think about that? > > --HPS > Hi, Another approach which will work is to setup your own USB control endpoint xfer, and use that. I'll have a look and see what can be done. --HPS
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