The root mount hold reference was not released on USB controller
attach failures during boot. Fix this.

Approved by: thompsa (mentor)

Merge svn+ssh://svn.freebsd.org/base/head@208557

MFC r208013

Add missing ifdefs for usb power saving support.

MFC r205005

Wrap the proc wakeup special case for ddb in ifdef DDB.

Submitted by: Giovanni Trematerra

Merge svn+ssh://svn.freebsd.org/base/head@205234

MFC r199816

Remove overuse of exclamation marks in kernel printfs, there mere fact a
message has been printed is enough to get someones attention. Also remove the
line number for DPRINTF/DPRINTFN

MFC r199816

Remove overuse of exclamation marks in kernel printfs, there mere fact a
message has been printed is enough to get someones attention. Also remove the
line number for DPRINTF/DPRINTFN, it already prints the funtion name and a
unique message.

show more ...

MFC r197553

- clean up USB detach logic. There seems to be some problems detaching multiple
USB HUBs connected in series from the root.

MFC r196488

- allow disabling "root_mount_hold()" by setting a sysctl/tunable at boot
- remove some redundant initial explore code

MFC 196403: Temporarily revert the new-bus locking for 8.0 release.

Approved by: re (kib)

Add missing ifdefs for usb power saving support.

Submitted by: Hans Petter Selasky

Update to current version of head.

Wrap the proc wakeup special case for ddb in ifdef DDB.

Submitted by: Giovanni Trematerra

IFH@204581

Merge from head at r201628.

# This hasn't been tested, and there are at least three bad commits
# that need to be backed out before the branch will be stable again.

Remove overuse of exclamation marks in kernel printfs, there mere fact a
message has been printed is enough to get someones attention. Also remove the
line number for DPRINTF/DPRINTFN, it already pri

Remove overuse of exclamation marks in kernel printfs, there mere fact a
message has been printed is enough to get someones attention. Also remove the
line number for DPRINTF/DPRINTFN, it already prints the funtion name and a
unique message.

show more ...

- MFC

MFp4 @ 168387

- clean up USB detach logic. There seems to be some problems detaching multiple
USB HUBs connected in series from the root.

- after this patch the rule is:
1) Always use device_de

MFp4 @ 168387

- clean up USB detach logic. There seems to be some problems detaching multiple
USB HUBs connected in series from the root.

- after this patch the rule is:
1) Always use device_detach() on the USB HUB first.
2) Never just device_delete_child() on the USB HUB, because that function
will traverse to all the device leaves and free them first, and then the USB
stack will free the devices twice which doesn't work very well.

- make sure the did DMA delay gets set after the timeout has elapsed to make
logic more clear. There is no functional difference.

Submitted by: Hans Petter Selasky

show more ...

Merge from head

Merge r188942 (USB stack switch) from head.

- MFC from head@196987

- allow disabling "root_mount_hold()" by
setting a sysctl/tunable at boot
- remove some redundant initial explore code

Submitted by: hps

Temporarily revert the new-bus locking for 8.0 release. It will be
reintroduced after HEAD is reopened for commits by re@.

Approved by: re (kib), attilio

- MFC @196061

Make the newbus subsystem Giant free by adding the new newbus sxlock.
The newbus lock is responsible for protecting newbus internIal structures,
device states and devclass flags. It is necessary to h

Make the newbus subsystem Giant free by adding the new newbus sxlock.
The newbus lock is responsible for protecting newbus internIal structures,
device states and devclass flags. It is necessary to hold it when all
such datas are accessed. For the other operations, softc locking should
ensure enough protection to avoid races.

Newbus lock is automatically held when virtual operations on the device
and bus are invoked when loading the driver or when the suspend/resume
take place. For other 'spourious' operations trying to access/modify
the newbus topology, newbus lock needs to be automatically acquired and
dropped.

For the moment Giant is also acquired in some key point (modules subsystem)
in order to avoid problems before the 8.0 release as module handlers could
make assumptions about it. This Giant locking should go just after
the release happens.

Please keep in mind that the public interface can be expanded in order
to provide more support, if there are really necessities at some point
and also some bugs could arise as long as the patch needs a bit of
further testing.

Bump __FreeBSD_version in order to reflect the newbus lock introduction.

Reviewed by: ed, hps, jhb, imp, mav, scottl
No answer by: ariff, thompsa, yongari
Tested by: pho,
G. Trematerra <giovanni dot trematerra at gmail dot com>,
Brandon Gooch <jamesbrandongooch at gmail dot com>
Sponsored by: Yahoo! Incorporated
Approved by: re (ksmith)

show more ...

USB controller:
- allow disabling "root_mount_hold()" by setting "hw.usb.no_boot_wait" sysctl

Submitted by: hps
Approved by: re