Messages in this thread | | | From | Anssi Hannula <> | Subject | Re: [REGRESSION] "USB: use kfifo to buffer usb-generic serial writes" causes gobi_loader to hang | Date | Mon, 22 Feb 2010 01:13:35 +0200 |
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On maanantai 22 helmikuu 2010 01:06:36 Anssi Hannula wrote: > 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.
If I use the option driver instead of qcserial, the firmware upload is always successful (without any added delays needed). The usbmon log for that case can be found here: http://stuff.onse.fi/gobi2000/gobi-regression6.mon.log
-- Anssi Hannula
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