Hi Sebastian, I'm not sure which linux version I should ask Grek to apply these patches to. All of these patches are bug fixes, but they're also non-trivial (and there's still a known bug), so perhaps 3.0-rc7 is not the right place for them? Do you have any suggestions? Arvid Brodin wrote: > This patch series fixes problems with urb unlinking (patch 1, 2). The > bug can be seen as "set altsetting to 0 failed, -110" during testusb runs, > and stops all low- and full-speed devices dead in their tracks until > reboot. > > Patch 3-5 change the way Errata 2 is worked around. This allows the use of > higher performance ATL interrupts while avoiding some rare lockups where > USB packets never finish. > > Patch 6 is some minor cleanup and fixes a bug where the urb might not get > correctly unliked from its endpoint if the system is out of memory during > enqueue. > > Known bugs: "WARNING: at drivers/usb/host/isp1760-hcd.c:1136" may be > triggered now and then. This bug is not introduced by these patches, but > seems to trigger a bit more often with them (maybe due to the lower > latency ATL interrupts). This bug seems to be benign (no known side effects) > but the reason for the warning code path should of course be looked into. > > Overall, I feel that the driver is more stable with these fixes than without > them, despite the WARNING. > > Tested by simultaneously running 'testusb -a' and copying files back and > forth between memory sticks connected via external hub (and syncing), by > running testusb and echoing characters between ports of USB connected > serial converters, and by copying large files (> 200 MB) between memory > sticks. > > > Arvid Brodin (6): > usb/isp1760: Added missing call to usb_hcd_check_unlink_urb() during > unlink > usb/isp1760: Clear TT buffer on interrupted low & full speed > transfers > usb/isp1760: Move some code (prepare for next patch) > usb/isp1760: Move isp1760_run within file (prepare for next patch) > usb/isp1760: Use polling instead of SOF interrupts to fix Errata 2 > usb/isp1760: Fix missing endpoint unlink when no mem during enqueue > > drivers/usb/host/isp1760-hcd.c | 377 +++++++++++++++++++++++++--------------- > drivers/usb/host/isp1760-hcd.h | 3 +- > 2 files changed, 243 insertions(+), 137 deletions(-) > -- Arvid Brodin Enea Services Stockholm AB -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
