I tested the patch myself (arm64 and armhf kernels on different Pi boards), it worked well. With this patch, the usb_owg could work well even with HIGHMEM and VMSPLIT_3G enabled, so far we still could use a single armhf kernel for Pi2/3/4 boards.
The testing kernel is at: https://people.canonical.com/~hwang4/dwcotg/ And I also posted my patch to comment #22 of https://github.com/raspberrypi/linux/issues/3332 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1852510 Title: IO errors when writing large amounts of data to USB storage in eoan on RPI To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1852510/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs