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Message-Id: <201002220106.36476.anssi.hannula@iki.fi> Date: Mon, 22 Feb 2010 01:06:36 +0200 From: Anssi Hannula <anssi.hannula@....fi> To: Oliver Neukum <oliver@...kum.org> Cc: Alan Stern <stern@...land.harvard.edu>, Matthew Garrett <mjg59@...f.ucam.org>, dvomlehn@...co.com, gregkh@...e.de, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [REGRESSION] "USB: use kfifo to buffer usb-generic serial writes" causes gobi_loader to hang On maanantai 22 helmikuu 2010 00:12:36 Oliver Neukum wrote: > Am Sonntag, 21. Februar 2010 22:42:12 schrieb Anssi Hannula: > > And of course this doesn't explain why it hangs (and the WARNING) if I > > remove the sleep calls I added in gobi_loader. > > Please tell us where you put a delay. As I said earlier, the delay was put *before* most of the data gets written. More specifically, I inserted a delay of one second between transmission of magic1 and magic2, one between magic2 and magic3, and one between magic3 and the first firmware file. If I additionally insert a one-second delay before the fd is closed, I get this usbmon log: http://stuff.onse.fi/gobi2000/gobi-regression5.mon.log The firmware upload is still unsuccessful. -- Anssi Hannula -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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