Handle USB device disconnection during early setup.

Handle USB device disconnection during early setup.

This patch fixes two issues which can occur when a device is closed
while it is being configured. First, ensuring that if the Mojo pipe
is closed while it is being opened that the device handle is closed
before it is freed. Second, that if a device handle is closed while
an interface claim is in progress the result is properly discarded.

BUG=700191
Review-Url: https://codereview.chromium.org/2752523002
Cr-Commit-Position: refs/heads/master@{#456789}
Committed: https://chromium.googlesource.com/chromium/src/+/2476b555727bb19508ae94feafa76dc6b9a69c1d

[Reilly Grant (use Gerrit), 2017-03-13 22:51:48]

reillyg@chromium.org changed reviewers:
+ juncai@chromium.org

[Reilly Grant (use Gerrit), 2017-03-13 22:51:48]

PTAL

[juncai, 2017-03-14 00:18:20]

LGTM.

[Reilly Grant (use Gerrit), 2017-03-14 01:20:14]

The CQ bit was checked by reillyg@chromium.org

[commit-bot: I haz the power, 2017-03-14 01:20:33]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-03-14 02:11:53]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2017-03-14 02:11:54]

Try jobs failed on following builders:
  linux_chromium_rel_ng on master.tryserver.chromium.linux (JOB_FAILED,
http://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_...)

[Reilly Grant (use Gerrit), 2017-03-14 18:05:21]

The CQ bit was checked by reillyg@chromium.org

[commit-bot: I haz the power, 2017-03-14 18:05:51]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-03-14 19:40:06]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1489514721782550, "parent_rev":
"6d38f59fb456cae155638b1d5316de3b278c9b34", "commit_rev":
"2476b555727bb19508ae94feafa76dc6b9a69c1d"}

[commit-bot: I haz the power, 2017-03-14 19:40:46]

Description was changed from

==========
Handle USB device disconnection during early setup.

This patch fixes two issues which can occur when a device is closed
while it is being configured. First, ensuring that if the Mojo pipe
is closed while it is being opened that the device handle is closed
before it is freed. Second, that if a device handle is closed while
an interface claim is in progress the result is properly discarded.

BUG=700191
==========

to

==========
Handle USB device disconnection during early setup.

This patch fixes two issues which can occur when a device is closed
while it is being configured. First, ensuring that if the Mojo pipe
is closed while it is being opened that the device handle is closed
before it is freed. Second, that if a device handle is closed while
an interface claim is in progress the result is properly discarded.

BUG=700191

Review-Url: https://codereview.chromium.org/2752523002
Cr-Commit-Position: refs/heads/master@{#456789}
Committed:
https://chromium.googlesource.com/chromium/src/+/2476b555727bb19508ae94feafa7...
==========

[commit-bot: I haz the power, 2017-03-14 19:40:46]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/2476b555727bb19508ae94feafa7...