Module Name: src
Committed By: mrg
Date: Wed May 8 06:31:02 UTC 2019
Modified Files:
src/sys/dev/usb: xhci.c
Log Message:
new comment explains this hack:
* XXXMRG: Stall task can run after slot is disabled when yanked.
* This hack notices that the xs has been memset() in
* xhci_disable_slot() and returns. Both xhci_reset_endpoint()
* and xhci_set_dequeue() rely upon a valid ring setup for correct
* operation, and the latter will fault, as would
* usb_transfer_complete() if it got that far.
this truly fixes yanking active ucom devices (uchcom, uplcom and
umcs all tested.) prior efforts largely worked by allowing the
stall task to run first, as a side effect to their actual work.
ok @skrll.
XXX: pullup.
To generate a diff of this commit:
cvs rdiff -u -r1.106 -r1.107 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.
