Messages in this thread | | | From | Oliver Neukum <> | Subject | Re: [REGRESSION] "USB: use kfifo to buffer usb-generic serial writes" causes gobi_loader to hang | Date | Fri, 5 Feb 2010 22:59:33 +0100 |
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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.
Regards Oliver
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