Module Name: src
Committed By: riastradh
Date: Sat Jan 29 21:36:12 UTC 2022
Modified Files:
src/sys/dev/usb: xhci.c
Log Message:
xhci(4): Fix handling of endpoint reset/stop.
Use the same asynchronous task resetting a stalled/halted endpoint
and stopping a running endpoint -- either way we need to put the
endpoint back into a known state and, if there are transfers waiting
to run, start them up again.
- xhci_abortx must not drop the pipe (bus) lock -- usbdi(9) requires
this. So arrange to stop the endpoint and empty the queue
asynchronously.
- If the xhci softint claims an xfer for completion with
usbd_xfer_trycomplete, it must call usb_transfer_complete without
ever releasing the pipe (bus) lock -- it can't claim the xfer and
then defer the usb_transfer_complete to a task. So arrange to
reset the endpoint asynchronously, hold up new transfers until the
endpoint has been reset, and then do usb_transfer_complete
immediately.
To generate a diff of this commit:
cvs rdiff -u -r1.154 -r1.155 src/sys/dev/usb/xhci.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
