From mboxrd@z Thu Jan 1 00:00:00 1970 From: robert.jarzmik@free.fr (Robert Jarzmik) Date: Fri, 25 Nov 2011 23:26:48 +0100 Subject: USB Serial Gadget regression on pxa27x-udc In-Reply-To: <1322234805.41847.YahooMailClassic@web29003.mail.ird.yahoo.com> (Paul Parsons's message of "Fri, 25 Nov 2011 15:26:45 +0000 (GMT)") References: <1322234805.41847.YahooMailClassic@web29003.mail.ird.yahoo.com> Message-ID: <87lir3kfdj.fsf@free.fr> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Paul Parsons writes: > The USB serial gadget on pxa27x-udc seems to be broken in 3.1.0. > > It was working OK on my hx4700 running 3.0.1. But with 3.1.0 (and at least 3.2.0-rc2 and 3.2.0-rc3) I now see the following warning: > > pxa27x-udc pxa27x-udc: ep0:handle_ep0:should never get in WAIT_ACK_SET_CONF_INTERF state here!!! > > I can still seemingly connect to the hx4700 from my linux host using cu(1) as > before, but no characters get transferred in either direction. Assuming you're using the serial gadget (g_serial) on the hx4700x in "non-ACM mode", there's a submitted fix for that in [1]. Cheers. -- Robert [1]: http://www.spinics.net/lists/linux-usb/msg54600.html