On Thu, May 16, 2024 at 08:49:02PM +0200, Michael Grzeschik wrote: >Hi > >On Fri, May 10, 2024 at 04:11:27PM +0200, Andrzej Pietrasiewicz wrote: >>W dniu 10.05.2024 o 12:11, Michael Grzeschik pisze: >>>On Fri, May 10, 2024 at 11:25:47AM +0200, Andrzej Pietrasiewicz wrote: >>>>Hi Michael, >>>> >>>>W dniu 30.04.2024 o 01:33, Michael Grzeschik pisze: >>>>>Add the new gadget function for 9pfs transport. This function is >>>>>defining an simple 9pfs transport interface that consists of one in and >>>>>one out endpoint. The endpoints transmit and receive the 9pfs protocol >>>>>payload when mounting a 9p filesystem over usb. >>>>> >>>>>Signed-off-by: Michael Grzeschik >>>>> >>>>>--- >>>>>v3 -> v4: >>>>>  - implemented conn_cancel >>>> >>>>I tried this scenario: >>>> >>>>1) run all the components and have 9pfs up and running >>>>2) stop the forwarder >>>>3) umount -f at the gadget side - this indeed succeeds now in v4 >>>>4) start the forwarder again >>>>5) mount at the gadget side - this hangs. >>>> >>>>Did this scenario work for you? >>> >>>I actually tested this exact scenario. So this is >>>suprising. I will try this again just to be sure >>>that I did send the latest version. >>> >>>My latest testsetup included the dummy_hcd. Did you test on real hardware? >> >>Yes, I did. > >I just also tested this again on real hardware. With the imx6 chipidea >udc I indeed see that this is stuck after the first round of mount and >remount. With the musb core on the beaglebone this seems to be fine. > >While debugging this I also ran into some shutdown issues and lockdep >issues I see because the complete handler is possible to be resumed >immedeatly on musb, which is odd. However I fixed/fix them and send an >v5 afterwards. > >Regarding the hang on the imx6, which hardware did you test this on? Nevermind. I can also reproduce the hang with the musb. Michael -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |