Michael Brown 8dbb73a779 [xhci] Consume event TRB before reporting completion to USB core ...

Reporting a completion via usb_complete() will pass control outside
the scope of xhci.c, and could potentially result in a further call to
xhci_event_poll() before returning from usb_complete().  Since we
currently update the event consumer counter only after calling
usb_complete(), this can result in duplicate completions and
consequent corruption of the submission TRB ring structures.

Fix by updating the event ring consumer counter before passing control
to usb_complete().

Reported-by: Andreas Hammarskjöld <junior@2PintSoftware.com>
Tested-by: Andreas Hammarskjöld <junior@2PintSoftware.com>
Signed-off-by: Michael Brown <mcb30@ipxe.org>

2018-02-19 18:59:45 +00:00

..

bitbash

[legal] Relicense files under GPL2_OR_LATER_OR_UBDL

2015-03-02 14:17:31 +00:00

block

[iscsi] Fix iBFT when no explicit initiator name setting exists

2017-05-10 16:01:47 +01:00

bus

[usb] Use non-zero language ID to retrieve strings

2017-07-03 13:38:55 +01:00

infiniband

[build] Avoid implicit-fallthrough warnings on GCC 7

2017-03-29 10:36:45 +03:00

linux

[linux] Impose receive quota on tap driver

2017-09-04 18:00:34 +01:00

net

[intel] Work around broken reset mechanism in i219 devices

2018-02-03 19:21:54 +00:00

nvs

[legal] Relicense files under GPL2_OR_LATER_OR_UBDL

2015-03-02 14:17:31 +00:00

usb

[xhci] Consume event TRB before reporting completion to USB core

2018-02-19 18:59:45 +00:00