Hello all, This is the third version of the patch sets originally published in the e-mail thread thread at [1]. As mentioned in the same e-mail thread with the e-mail at [2], I was able to find a more acceptable solution to the issue reported by Andrey Konovalov, where usbip takes over the dummy_hcd-provided devices set up by the USB fuzzing instance of the syzkaller fuzzer. In summary, the approach involves: * Removal of the usbip_match function. * Fixing two bugs in the specialised USB driver selection code. * Accommodating usbip by changing the logic in the specialised USB driver selection code, while preserving legacy/previous behaviour. I have tested this patch set with Greg Kroah-Hartman's usb-next tree based on v5.9-rc6 with the base commit mentioned below in this e-mail, and I can report that usbip works as expected, with no regressions in the usbip_test.sh self-test suite output compared to v4.14.119. I have also verified that the apple-mfi-fastcharge driver is correctly used when an iPhone is plugged in to my system. Finally, I can report that Andrey Konovalov's "keyboard" test program making use of dummy_hcd, found at [3], also works as expected. I would appreciate your comments. Thank you, Vefa [1] https://lore.kernel.org/linux-usb/CAAeHK+zOrHnxjRFs=OE8T=O9208B9HP_oo8RZpyVOZ9AJ54pAA@xxxxxxxxxxxxxx/ [2] https://lore.kernel.org/linux-usb/9f332d7b-e33d-ebd0-3154-246fbfb69128@xxxxxxxxxx/ [3] https://github.com/xairy/raw-gadget Cc: Bastien Nocera <hadess@xxxxxxxxxx> Cc: Valentina Manea <valentina.manea.m@xxxxxxxxx> Cc: Shuah Khan <shuah@xxxxxxxxxx> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> Cc: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> Cc: <syzkaller@xxxxxxxxxxxxxxxx> M. Vefa Bicakci (4): Revert "usbip: Implement a match function to fix usbip" usbcore/driver: Fix specific driver selection usbcore/driver: Fix incorrect downcast usbcore/driver: Accommodate usbip drivers/usb/core/driver.c | 50 ++++++++++++++++++++++++------------ drivers/usb/usbip/stub_dev.c | 6 ----- 2 files changed, 34 insertions(+), 22 deletions(-) base-commit: 55be22adf11b48c80ea181366685ec91a4700b7e -- 2.26.2
