On 20.07.2017 17:43, Yaroslav Isakov wrote:
Hello everyone! I saw this thread some months ago, but do not know how to properly reply to it. I have the same problem, and it's just not few messages - it was about 40k messages in 10 minutes. No functional of my USB device (which is CCID USB token) is broken, just enormous amount of spam in the logs. I'm on 4.12 kernel, but I've seen this error on 4.11 and 4.9. Could this problem be caused by a bug in e.g. libusb, not a device itself? --
I'd start by looking at xhci, can you take xhci traces of this? mount -t debugfs none /sys/kernel/debug echo 81920 > /sys/kernel/debug/tracing/buffer_size_kb echo 1 > /sys/kernel/debug/tracing/events/xhci-hcd/enable and then send me the content of /sys/kernel/debug/tracing/trace I'll be away for a couple of weeks, so next response might take some time -Mathias -- 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
