Drivers: hv: vss: Improve log messages.

Adding log messages to help troubleshoot error cases and transaction
handling.

Signed-off-by: Alex Ng <alexng@microsoft.com>
Signed-off-by: K. Y. Srinivasan

Drivers: hv: vss: Improve log messages.

Adding log messages to help troubleshoot error cases and transaction
handling.

Signed-off-by: Alex Ng <alexng@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Merge branch 'topic/error' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-fixed

Merge back earlier cpufreq material for v4.10.

Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc

Backmerge latest drm-next to have a baseline for the
s/fence/dma_fence/ patch from Chris.

Signed-off-by: Daniel Vetter <daniel.ve

Merge remote-tracking branch 'airlied/drm-next' into topic/drm-misc

Backmerge latest drm-next to have a baseline for the
s/fence/dma_fence/ patch from Chris.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

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Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queued

Backmerge because Chris Wilson needs the very latest&greates of
Gustavo Padovan's sync_file work, specifically the refcount

Merge remote-tracking branch 'airlied/drm-next' into drm-intel-next-queued

Backmerge because Chris Wilson needs the very latest&greates of
Gustavo Padovan's sync_file work, specifically the refcounting changes
from:

commit 30cd85dd6edc86ea8d8589efb813f1fad41ef233
Author: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Date: Wed Oct 19 15:48:32 2016 -0200

dma-buf/sync_file: hold reference to fence when creating sync_file

Also good to sync in general since git tends to get confused with the
cherry-picking going on.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

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Merge tag 'v4.9-rc1' into patchwork

Linux 4.9-rc1

* tag 'v4.9-rc1': (13774 commits)
Linux 4.9-rc1
score: traps: Add missing include file to fix build error
fs/super.c: don't fool lockdep in f

Merge tag 'v4.9-rc1' into patchwork

Linux 4.9-rc1

* tag 'v4.9-rc1': (13774 commits)
Linux 4.9-rc1
score: traps: Add missing include file to fix build error
fs/super.c: don't fool lockdep in freeze_super() and thaw_super() paths
fs/super.c: fix race between freeze_super() and thaw_super()
overlayfs: Fix setting IOP_XATTR flag
iov_iter: kernel-doc import_iovec() and rw_copy_check_uvector()
CIFS: Retrieve uid and gid from special sid if enabled
CIFS: Add new mount option to set owner uid and gid from special sids in acl
qedr: Add events support and register IB device
qedr: Add GSI support
qedr: Add LL2 RoCE interface
qedr: Add support for data path
qedr: Add support for memory registeration verbs
qedr: Add support for QP verbs
qedr: Add support for PD,PKEY and CQ verbs
qedr: Add support for user context verbs
qedr: Add support for RoCE HW init
qedr: Add RoCE driver framework
pkeys: Remove easily triggered WARN
MIPS: Wire up new pkey_{mprotect,alloc,free} syscalls
...

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Merge tag 'v4.9-rc1' into x86/fpu, to resolve conflict

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge tag 'v4.9-rc3' into xtensa-for-next

Linux 4.9-rc3

Merge branches 'pm-cpufreq-fixes' and 'pm-sleep-fixes'

* pm-cpufreq-fixes:
cpufreq: intel_pstate: Always set max P-state in performance mode
cpufreq: intel_pstate: Set P-state upfront in perform

Merge branches 'pm-cpufreq-fixes' and 'pm-sleep-fixes'

* pm-cpufreq-fixes:
cpufreq: intel_pstate: Always set max P-state in performance mode
cpufreq: intel_pstate: Set P-state upfront in performance mode

* pm-sleep-fixes:
PM / suspend: Fix missing KERN_CONT for suspend message

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Merge tag 'v4.9-rc1' into x86/urgent, to pick up updates

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge tag 'char-misc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
"Here's the "big" char and misc driver update for 4.9-rc1

Merge tag 'char-misc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
"Here's the "big" char and misc driver update for 4.9-rc1.

Lots of little things here, all over the driver tree for subsystems
that flow through me. Nothing major that I can discern, full details
are in the shortlog.

All have been in the linux-next tree with no reported issues"

* tag 'char-misc-4.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (144 commits)
drivers/misc/hpilo: Changes to support new security states in iLO5 FW
at25: fix debug and error messaging
misc/genwqe: ensure zero initialization
vme: fake: remove unexpected unlock in fake_master_set()
vme: fake: mark symbols static where possible
spmi: pmic-arb: Return an error code if sanity check fails
Drivers: hv: get rid of id in struct vmbus_channel
Drivers: hv: make VMBus bus ids persistent
mcb: Add a dma_device to mcb_device
mcb: Enable PCI bus mastering by default
mei: stop the stall timer worker if not needed
clk: probe common clock drivers earlier
vme: fake: fix build for 64-bit dma_addr_t
ttyprintk: Neaten and simplify printing
mei: me: add kaby point device ids
coresight: tmc: mark symbols static where possible
coresight: perf: deal with error condition properly
Drivers: hv: hv_util: Avoid dynamic allocation in time synch
fpga manager: Add hardware dependency to Zynq driver
Drivers: hv: utils: Support TimeSync version 4.0 protocol samples.
...

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Drivers: hv: utils: Check VSS daemon is listening before a hot backup

Hyper-V host will send a VSS_OP_HOT_BACKUP request to check if guest is
ready for a live backup/snapshot. The driver should resp

Drivers: hv: utils: Check VSS daemon is listening before a hot backup

Hyper-V host will send a VSS_OP_HOT_BACKUP request to check if guest is
ready for a live backup/snapshot. The driver should respond to the check
only if the daemon is running and listening to requests. This allows the
host to fallback to standard snapshots in case the VSS daemon is not
running.

Signed-off-by: Alex Ng <alexng@messages.microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Drivers: hv: utils: Continue to poll VSS channel after handling requests.

Multiple VSS_OP_HOT_BACKUP requests may arrive in quick succession, even
though the host only signals once. The driver wass

Drivers: hv: utils: Continue to poll VSS channel after handling requests.

Multiple VSS_OP_HOT_BACKUP requests may arrive in quick succession, even
though the host only signals once. The driver wass handling the first
request while ignoring the others in the ring buffer. We should poll the
VSS channel after handling a request to continue processing other requests.

Signed-off-by: Alex Ng <alexng@microsoft.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Drivers: hv: utils: fix a race on userspace daemons registration

Background: userspace daemons registration protocol for Hyper-V utilities
drivers has two steps:
1) daemon writes its own version to

Drivers: hv: utils: fix a race on userspace daemons registration

Background: userspace daemons registration protocol for Hyper-V utilities
drivers has two steps:
1) daemon writes its own version to kernel
2) kernel reads it and replies with module version
at this point we consider the handshake procedure being completed and we
do hv_poll_channel() transitioning the utility device to HVUTIL_READY
state. At this point we're ready to handle messages from kernel.

When hvutil_transport is in HVUTIL_TRANSPORT_CHARDEV mode we have a
single buffer for outgoing message. hvutil_transport_send() puts to this
buffer and till the buffer is cleared with hvt_op_read() returns -EFAULT
to all consequent calls. Host<->guest protocol guarantees there is no more
than one request at a time and we will not get new requests till we reply
to the previous one so this single message buffer is enough.

Now to the race. When we finish negotiation procedure and send kernel
module version to userspace with hvutil_transport_send() it goes into the
above mentioned buffer and if the daemon is slow enough to read it from
there we can get a collision when a request from the host comes, we won't
be able to put anything to the buffer so the request will be lost. To
solve the issue we need to know when the negotiation is really done (when
the version message is read by the daemon) and transition to HVUTIL_READY
state after this happens. Implement a callback on read to support this.
Old style netlink communication is not affected by the change, we don't
really know when these messages are delivered but we don't have a single
message buffer there.

Reported-by: Barry Davis <barry_davis@stormagic.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Merge branch 'for-linus' into next

Sync up to bring in wacom_w8001 changes to avoid merge conflicts later.

Merge branch 'cec-defines' into for-linus

Let's bring in HDMI CEC defines to ease merging CEC support in the next
merge window.

Merge branch 'for-4.7/pwm-regulator' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm into regulator-pwm

Merge back cpufreq changes for v4.7.

Merge branch 'master' into for-next

Sync with Linus' tree so that patches against newer codebase can be applied.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Merge tag 'v4.6-rc3' into perf/core, to refresh the tree

Signed-off-by: Ingo Molnar <mingo@kernel.org>

Merge tag 'v4.6-rc3' into drm-intel-next-queued

Linux 4.6-rc3

Backmerge requested by Chris Wilson to make his patches apply cleanly.
Tiny conflict in vmalloc.c with the (properly acked and all) pat

Merge tag 'v4.6-rc3' into drm-intel-next-queued

Linux 4.6-rc3

Backmerge requested by Chris Wilson to make his patches apply cleanly.
Tiny conflict in vmalloc.c with the (properly acked and all) patch in
drm-intel-next:

commit 4da56b99d99e5a7df2b7f11e87bfea935f909732
Author: Chris Wilson <chris@chris-wilson.co.uk>
Date: Mon Apr 4 14:46:42 2016 +0100

mm/vmap: Add a notifier for when we run out of vmap address space

and Linus' tree.

Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>

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Merge branch 'pm-cpufreq-sched' into pm-cpufreq

Merge branch 'fixes-base' into fixes

Merge tag 'for-v4.6-rc/omap-fixes-a' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v4.6/fixes

ARM: OMAP2+: first hwmod fix for v4.6-rc

Fix a longstanding bug in th

Merge tag 'for-v4.6-rc/omap-fixes-a' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into omap-for-v4.6/fixes

ARM: OMAP2+: first hwmod fix for v4.6-rc

Fix a longstanding bug in the hwmod code that could cause
hardware SYSCONFIG register values to not match the kernel's
idea of what they should be, and that could result in lower
performance during IP block idle entry.

Basic build, boot, and PM test logs are available here:

http://www.pwsan.com/omap/testlogs/omap-hwmod-fixes-a-for-v4.6-rc/20160326231727/

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Merge tag 'v4.6-rc1'

Linux 4.6-rc1