Messages in this thread | | | Date | Fri, 12 Feb 2010 21:50:04 -0500 (EST) | From | Alan Stern <> | Subject | Re: [REGRESSION] "USB: use kfifo to buffer usb-generic serial writes" causes gobi_loader to hang |
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On Sat, 13 Feb 2010, Anssi Hannula wrote:
> On 05.02.2010 23:59, Oliver Neukum wrote: > > Am Freitag, 5. Februar 2010 20:58:17 schrieb Matthew Garrett: > >> drivers/usb/serial/usb-serial.c: usb_serial_port_work - port 0 > >> drivers/usb/serial/usb-serial.c: serial_write - port 0, 2048 byte(s) > >> drivers/usb/serial/generic.c: usb_serial_generic_write - port 0, 2048 bytes > >> drivers/usb/serial/generic.c: usb_serial_generic_write - put 512 bytes into fifo > >> drivers/usb/serial/usb-serial.c: serial_write - port 0, 1536 byte(s) > >> drivers/usb/serial/generic.c: usb_serial_generic_write - port 0, 1536 bytes > >> drivers/usb/serial/generic.c: usb_serial_generic_write - put 0 bytes into fifo > >> drivers/usb/serial/generic.c: usb_serial_generic_write - FIFO is full > > > > OK, could you also get an usbmon trace? This would allow a determination > > whether the submitted URB doesn't finish for some reason, or whether > > no URB is submitted, possibly because a wakeup is missed. > > I'm also affected by this regression. Here's an usbmon trace of > gobi_loader hanging: > http://stuff.onse.fi/gobi2000/gobi-regression.mon.log
That's odd. The log shows the final bulk-OUT transfer was cancelled after less than 1 ms. Is there a timeout value somewhere that is too small by a factor of 1000?
Alan Stern
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