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? 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 |