We must not allow the input buffer length to change while we're
shuffling the buffer contents.  We also mustn't clear the WDM_READ
flag after more data might have arrived.  Therefore move both of these
into the spinlocked region at the bottom of wdm_read().

When reading desc->length without holding the iuspin lock, use
ACCESS_ONCE() to ensure the compiler doesn't re-read it with
inconsistent results.
Signed-off-by: NBen Hutchings <ben@decadent.org.uk>
Tested-by: NBjørn Mork <bjorn@mork.no>
Cc: Oliver Neukum <oliver@neukum.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Gobi 1000 devices have a different port layout, which wasn't respected
by the current driver, and thus it grabbed the QMI/net port.  In the
near future we'll be attaching another driver to the QMI/net port for
these devices (cdc-wdm and qmi_wwan) so make sure the qcserial driver
doesn't claim them.  This patch also prevents qcserial from binding to
interfaces 0 and 1 on 1K devices because those interfaces do not
respond.
Signed-off-by: NDan Williams <dcbw@redhat.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

No one uses them anymore, they should be using the safer
usb_serial_register_drivers() and usb_serial_deregister_drivers()
functions instead.

Thanks to Alan Stern for writing these functions and porting all
in-kernel users to them.

Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This was missed in Alan's last round of conversions.

Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch (as1530) modifies the following usb-serial drivers from
drivers/staging to utilize the new usb_serial_{de}register_drivers()
routines:

	quatech_usb2 and serqt_usb2.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch (as1529) modifies the following usb-serial drivers to
utilize the new usb_serial_{de}register_drivers() routines:

	ti_usb_3410_5052, usb_debug, visor, vivopay-serial,
	whiteheat, and zio.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch (as1528) modifies the following usb-serial drivers to
utilize the new usb_serial_{de}register_drivers() routines:

	qcaux, qcserial, safe_serial, siemens_mpi, sierra,
	spcp8x5, ssu100, and symbolserial.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch (as1527) modifies the following usb-serial drivers to
utilize the new usb_serial_{de}register_drivers() routines:

	navman, omninet, opticon, option, oti6858, and pl2303.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch (as1526) modifies the following usb-serial drivers to
utilize the new usb_serial_{de}register_drivers() routines:

	keyspan, kl5kusb105, kobil_sct, mct_u232, mos7720,
	mos7840, and moto_modem.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch (as1525) modifies the following usb-serial drivers to
utilize the new usb_serial_{de}register_drivers() routines:

	io_edgeport, io_ti, ipaq, ipw, ir-usb, and iuu_phoenix.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch (as1524) modifies the following usb-serial drivers to
utilize the new usb_serial_{de}register_drivers() routines:

	digi_acceleport, empeg, ftdi_sio, funsoft, garmin_gps,
	and hp4x.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch (as1523) modifies the following usb-serial drivers to
utilize the new usb_serial_{de}register_drivers() routines:

	aircable, ark3116, belkin_sa, ch341, cp210x, cyberjack,
	and cypress_m8.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch (as1522) adds two new routines to the usb-serial core, for
registering and unregistering serial drivers.  Instead of registering
the usb_driver and usb_serial_drivers separately, with error checking
for each one, the drivers can all be registered and unregistered by a
single function call.  This reduces duplicated code.

More importantly, the new core routines change the order in which the
drivers are registered.  Currently the usb-serial drivers are all
registered first and the usb_driver is done last, which leaves a
window for problems.  A udev script may quickly add a new dynamic-ID
for a usb-serial driver, causing the corresponding usb_driver to be
probed.  If the usb_driver hasn't been registered yet then an oops
will occur.

The new routine prevents such problems by registering the usb_driver
first.  To insure that it gets probed properly for already-attached
serial devices, we call driver_attach() after all the usb-serial
drivers have been registered.

Along with adding the new routines, the patch modifies the "generic"
serial driver to use them.  Further patches will similarly modify all
the other in-tree USB serial drivers.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This is to pull in the xhci changes and the other fixes and device id
updates that were done in Linus's tree.
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

USB bugfixes for 3.3-rc4

A number of new device ids, and a cleanup/fix for some of the option
device ids that shouldn't have been added in the first place.

There's also a few USB 3 fixes for problems that people have reported,
and a usb-storage bugfix to round it out.
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

* tag 'usb-3.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: Added Kamstrup VID/PIDs to cp210x serial driver.
  USB: Serial: ti_usb_3410_5052: Add Abbot Diabetes Care cable id
  usb-storage: fix freezing of the scanning thread
  xhci: Fix encoding for HS bulk/control NAK rate.
  USB: Set hub depth after USB3 hub reset
  USB: Fix handoff when BIOS disables host PCI device.
  USB: option: cleanup zte 3g-dongle's pid in option.c
  USB: Don't fail USB3 probe on missing legacy PCI IRQ.
  xhci: Fix oops caused by more USB2 ports than USB3 ports.
  USB: Remove duplicate USB 3.0 hub feature #defines.

Intel, radeon, exynos fixes.

Intel: fixes a few Ivybridge hangs, along with fixing RC6 on SNB (still
not on, but at least allows for distros to patch it on easily).

radeon: oops reading some files in debugfs that weren't meant to appear,
a fix that touches a lot of files, so looks worse than it is, it fixes
an oops if a GPU reset fails and userspace keeps submitting more data,
along with a minor BIOS fix for newer boards.

exynos: a group of fixes for exynos, they've sent me a few more but
these were all I got through, and its no hw vanilla kernel users see a
lot off yet.

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon/kms/atom: dpms bios scratch reg updates
  drm/radeon/kms: properly set accel working flag and bailout when false
  drm/radeon: Only create additional ring debugfs files on Cayman or newer.
  drm/exynos: added postclose to release resource.
  drm/exynos: removed exynos_drm_fbdev_recreate function.
  drm/exynos: fixed page flip issue.
  drm/exynos: added possible_clones setup function.
  drm/exynos: removed pageflip_event_list init code when closed.
  drm/exynos: changed priority of mixer layers.
  drm/exynos: Fix typo in exynos_mixer.c
  drm/i915: do not enable RC6p on Sandy Bridge
  drm/i915: gen7: Disable the RHWO optimization as it can cause GPU hangs.
  drm/i915: gen7: work around a system hang on IVB
  drm/i915: gen7: Implement an L3 caching workaround.
  drm/i915: gen7: implement rczunit workaround

It contains 3 important fixes for ColdFire based machines:
 - fix processes getting stuck when running from strace
 - fix kernel vmalloced pages not being visible in all kernel contexts
 - fix shared user pages sometimes being visible in another process
   context

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: Do not set global share for non-kernel shared pages
  m68k: Add shared bit to Coldfire kernel page entries
  m68knommu: fix syscall tracing stuck process

Bugfixes for the NFS client.

Fix a nasty Oops in the NFSv4 getacl code, another source of infinite
loops in the NFSv4 state recovery code, and a regression in NFSv4.1
session initialisation.

Also deal with an NFSv4.1 memory leak.

* tag 'nfs-for-3.3-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4: fix server_scope memory leak
  NFSv4.1: Fix a NFSv4.1 session initialisation regression
  NFSv4: Ensure we throw out bad delegation stateids on NFS4ERR_BAD_STATEID
  NFSv4: Fix an Oops in the NFSv4 getacl code

dpms bits not used on DCE4+
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

If accel is not working many subsystem such as the ib pool might not be
initialized properly that can lead to segfault inside kernel when cs
ioctl is call with non working acceleration. To avoid this make sure
the accel working flag is false when an error in GPU startup happen and
return EBUSY from cs ioctl if accel is not working.
Signed-off-by: NJerome Glisse <jglisse@redhat.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=46274

Tested with a Cayman card in a Llano system: The additional files are created
and working for the Cayman card but not created for the CPU's built-in GPU.
Signed-off-by: NMichel Dänzer <michel.daenzer@amd.com>
Reviewed-by: NAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: NDave Airlie <airlied@redhat.com>

Merge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/drm-intel into drm-fixes

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/drm-intel:
  drm/i915: do not enable RC6p on Sandy Bridge
  drm/i915: gen7: Disable the RHWO optimization as it can cause GPU hangs.
  drm/i915: gen7: work around a system hang on IVB
  drm/i915: gen7: Implement an L3 caching workaround.
  drm/i915: gen7: implement rczunit workaround

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  maintainers: update my email address

A few more things this time around.  The only thing warranting some
commentry is the modpost change, which allows folk building a Thumb2
enabled kernel to see section mismatch warnings.  This is why many
weren't noticed with OMAP.

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM/audit: include audit header and fix audit arch
  ARM: OMAP: fix voltage domain build errors with PM_OPP disabled
  ARM/PCI: Remove ARM's duplicate definition of 'pcibios_max_latency'
  ARM: 7336/1: smp_twd: Don't register CPUFREQ notifiers if local timers are not initialised
  ARM: 7327/1: need to include asm/system.h in asm/processor.h
  ARM: 7326/2: PL330: fix null pointer dereference in pl330_chan_ctrl()
  ARM: 7164/3: PL330: Fix the size of the dst_cache_ctrl field
  ARM: 7325/1: fix v7 boot with lockdep enabled
  ARM: 7324/1: modpost: Fix section warnings for ARM for many compilers
  ARM: 7323/1: Do not allow ARM_LPAE on pre-ARMv7 architectures

Update my email address.
Signed-off-by: NJames Morris <james.l.morris@oracle.com>

The 'poll()' system call timeout parameter is supposed to be 'int', not
'long'.

Now, the reason this matters is that right now 32-bit compat mode is
broken on at least x86-64, because the 32-bit code just calls
'sys_poll()' directly on x86-64, and the 32-bit argument will have been
zero-extended, turning a signed 'int' into a large unsigned 'long'
value.

We could just introduce a 'compat_sys_poll()' function for this, and
that may eventually be what we have to do, but since the actual standard
poll() semantics is *supposed* to be 'int', and since at least on x86-64
glibc sign-extends the argument before invocing the system call (so
nobody can actually use a 64-bit timeout value in user space _anyway_,
even in 64-bit binaries), the simpler solution would seem to be to just
fix the definition of the system call to match what it should have been
from the very start.

If it turns out that somebody somehow circumvents the user-level libc
64-bit sign extension and actually uses a large unsigned 64-bit timeout
despite that not being how poll() is supposed to work, we will need to
do the compat_sys_poll() approach.
Reported-by: NThomas Meyer <thomas@m3y3r.de>
Acked-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This provides unified readq()/writeq() helper functions for 32-bit
drivers.

For some cases, readq/writeq without atomicity is harmful, and order of
io access has to be specified explicitly.  So in this patch, new two
header files which contain non-atomic readq/writeq are added.

 - <asm-generic/io-64-nonatomic-lo-hi.h> provides non-atomic readq/
   writeq with the order of lower address -> higher address

 - <asm-generic/io-64-nonatomic-hi-lo.h> provides non-atomic readq/
   writeq with reversed order

This allows us to remove some readq()s that were added drivers when the
default non-atomic ones were removed in commit dbee8a0a ("x86:
remove 32-bit versions of readq()/writeq()")

The drivers which need readq/writeq but can do with the non-atomic ones
must add the line:

  #include <asm-generic/io-64-nonatomic-lo-hi.h> /* or hi-lo.h */

But this will be nop in 64-bit environments, and no other #ifdefs are
required.  So I believe that this patch can solve the problem of
 1. driver-specific readq/writeq
 2. atomicity and order of io access

This patch is tested with building allyesconfig and allmodconfig as
ARCH=x86 and ARCH=i386 on top of tip/master.

Cc: Kashyap Desai <Kashyap.Desai@lsi.com>
Cc: Len Brown <lenb@kernel.org>
Cc: Ravi Anand <ravi.anand@qlogic.com>
Cc: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Cc: James Bottomley <James.Bottomley@parallels.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: James Bottomley <jbottomley@parallels.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: NHitoshi Mitake <h.mitake@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NBruno Thomsen <bruno.thomsen@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This USB-serial cable with mini stereo jack enumerates as:
Bus 001 Device 004: ID 1a61:3410 Abbott Diabetes Care

It is a TI3410 inside.
Signed-off-by: NAndrew Lunn <andrew@lunn.ch>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch (as1521b) fixes the interaction between usb-storage's
scanning thread and the freezer.  The current implementation has a
race: If the device is unplugged shortly after being plugged in and
just as a system sleep begins, the scanning thread may get frozen
before the khubd task.  Khubd won't be able to freeze until the
disconnect processing is complete, and the disconnect processing can't
proceed until the scanning thread finishes, so the sleep transition
will fail.

The implementation in the 3.2 kernel suffers from an additional
problem.  There the scanning thread calls set_freezable_with_signal(),
and the signals sent by the freezer will mess up the thread's I/O
delays, which are all interruptible.

The solution to both problems is the same: Replace the kernel thread
used for scanning with a delayed-work routine on the system freezable
work queue.  Freezable work queues have the nice property that you can
cancel a work item even while the work queue is frozen, and no signals
are needed.

The 3.2 version of this patch solves the problem in Bugzilla #42730.
Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
Acked-by: NSeth Forshee <seth.forshee@canonical.com>
CC: stable <stable@vger.kernel.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Merge tag 'for-usb-linus-2012-02-21' of git://git.kernel.org/pub/scm/linux/kernel/git/sarah/xhci into usb-linus

Hi Greg,

Here's three bug fixes that should be queued for 3.3.

The first fixes an issue we saw with an Intel Panther Point xHCI host,
where a certain OSV's custom BIOS would disable the PCI device during
boot.  It changes the generic PCI quirks handler for all USB host
controllers, but in a way both Jesse Barnes and Oliver Neukum have
agreed is safe.

The second patch is Elric Fu's first kernel patch!  Congrats!  It fixes
a bug in the USB 3.0 hub reset handling.

The last patch fixes a bug in the xHCI driver that feeds invalid input
to the xHC host.  Only the VIA host controller seems to have issues with
it.  Thanks to Felipe Contreras for testing this patch on his VIA host,
and Andiry Xu for suggesting the fix.

All three patches are marked for stable.

Sarah Sharp

The xHCI 0.96 spec says that HS bulk and control endpoint NAK rate must
be encoded as an exponent of two number of microframes.  The endpoint
descriptor has the NAK rate encoded in number of microframes.  We were
just copying the value from the endpoint descriptor into the endpoint
context interval field, which was not correct.  This lead to the VIA
host rejecting the add of a bulk OUT endpoint from any USB 2.0 mass
storage device.

The fix is to use the correct encoding.  Refactor the code to convert
number of frames to an exponential number of microframes, and make sure
we convert the number of microframes in HS bulk and control endpoints to
an exponent.

This should be back ported to kernels as old as 2.6.31, that contain the
commit dfa49c4a "USB: xhci - fix math
in xhci_get_endpoint_interval"
Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com>
Tested-by: NFelipe Contreras <felipe.contreras@gmail.com>
Suggested-by: NAndiry Xu <andiry.xu@amd.com>
Cc: stable@vger.kernel.org

The superspeed device attached to a USB 3.0 hub(such as VIA's)
doesn't respond the address device command after resume. The
root cause is the superspeed hub will miss the Hub Depth value
that is used as an offset into the route string to locate the
bits it uses to determine the downstream port number after
reset, and all packets can't be routed to the device attached
to the superspeed hub.

Hub driver sends a Set Hub Depth request to the superspeed hub
except for USB 3.0 root hub when the hub is initialized and
doesn't send the request again after reset due to the resume
process. So moving the code that sends the Set Hub Depth request
to the superspeed hub from hub_configure() to hub_activate()
is to cover those situations include initialization and reset.

The patch should be backported to kernels as old as 2.6.39.
Signed-off-by: NElric Fu <elricfu1@gmail.com>
Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com>
Acked-by: NAlan Stern <stern@rowland.harvard.edu>
Cc: stable@vger.kernel.org

On some systems with an Intel Panther Point xHCI host controller, the
BIOS disables the xHCI PCI device during boot, and switches the xHCI
ports over to EHCI.  This allows the BIOS to access USB devices without
having xHCI support.

The downside is that the xHCI BIOS handoff mechanism will fail because
memory mapped I/O is not enabled for the disabled PCI device.
Jesse Barnes says this is expected behavior.  The PCI core will enable
BARs before quirks run, but it will leave it in an undefined state, and
it may not have memory mapped I/O enabled.

Make the generic USB quirk handler call pci_enable_device() to re-enable
MMIO, and call pci_disable_device() once the host-specific BIOS handoff
is finished.  This will balance the ref counts in the PCI core.  When
the PCI probe function is called, usb_hcd_pci_probe() will call
pci_enable_device() again.

This should be back ported to kernels as old as 2.6.31.  That was the
first kernel with xHCI support, and no one has complained about BIOS
handoffs failing due to memory mapped I/O being disabled on other hosts
(EHCI, UHCI, or OHCI).
Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com>
Acked-by: NOliver Neukum <oneukum@suse.de>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: stable@vger.kernel.org

Both bugs being fixed were introduced in:
29ef73b7

Include linux/audit.h to fix below build errors:

  CC      arch/arm/kernel/ptrace.o
arch/arm/kernel/ptrace.c: In function 'syscall_trace':
arch/arm/kernel/ptrace.c:919: error: implicit declaration of function 'audit_syscall_exit'
arch/arm/kernel/ptrace.c:921: error: implicit declaration of function 'audit_syscall_entry'
arch/arm/kernel/ptrace.c:921: error: 'AUDIT_ARCH_ARMEB' undeclared (first use in this function)
arch/arm/kernel/ptrace.c:921: error: (Each undeclared identifier is reported only once
arch/arm/kernel/ptrace.c:921: error: for each function it appears in.)
make[1]: *** [arch/arm/kernel/ptrace.o] Error 1
make: *** [arch/arm/kernel] Error 2

This part of the patch is:
Reported-by: NAxel Lin <axel.lin@gmail.com>
Reported-by: NPeter Ujfalusi <peter.ujfalusi@ti.com>
(They both provided patches to fix it)

This patch also (at the request of the list) fixes the fact that
ARM has both LE and BE versions however the audit code was called as if
it was always BE.  If audit userspace were to try to interpret the bits
it got from a LE system it would obviously do so incorrectly.  Fix this
by using the right arch flag on the right system.

This part of the patch is:
Reported-by: NRussell King - ARM Linux <linux@arm.linux.org.uk>
Signed-off-by: NEric Paris <eparis@redhat.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The voltage domain code wants the voltage tables, which are in the
opp*.c files.  These files aren't built when PM_OPP is disabled,
causing the following build errors at link time:

twl-common.c:(.init.text+0x2e48): undefined reference to `omap34xx_vddmpu_volt_data'
twl-common.c:(.init.text+0x2e4c): undefined reference to `omap34xx_vddcore_volt_data'
twl-common.c:(.init.text+0x2e5c): undefined reference to `omap36xx_vddmpu_volt_data'
twl-common.c:(.init.text+0x2e60): undefined reference to `omap36xx_vddcore_volt_data'
twl-common.c:(.init.text+0x2830): undefined reference to `omap44xx_vdd_mpu_volt_data'
twl-common.c:(.init.text+0x283c): undefined reference to `omap44xx_vdd_iva_volt_data'
twl-common.c:(.init.text+0x2844): undefined reference to `omap44xx_vdd_core_volt_data'
Acked-by: NKevin Hilman <khilman@ti.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

The patch series to re-factor PCI's 'latency timer' setup (re:
http://marc.info/?l=linux-kernel&m=131983853831049&w=2) forgot to
remove the ARM specific definition of 'pcibios_max_latency' once such
had been moved into the pci core resulting in ARM related compile
errors -
  drivers/built-in.o:(.data+0x230): multiple definition of
  `pcibios_max_latency'
  arch/arm/common/built-in.o:(.data+0x40c): first defined here
  make[1]: *** [vmlinux.o] Error 1

In the series, patch 2/16 (commit 168c8619) converted the ARM
specific version of 'pcibios_set_master()' to a non-inlined version.
This was done in preperation for hosting it up into PCI's core, which
was done in patch 10/16 (commit 96c55900) of the series (and
where the removal of ARM's 'pcibios_max_latency' was overlooked).
Reported-by: NRussell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: NMyron Stowe <myron.stowe@redhat.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Current ARM local timer code registers CPUFREQ notifiers even in case
the twd_timer_setup() isn't called. That seems to be wrong and
would eventually lead to kernel crash on the CPU frequency transitions
on the SOCs where the local timer doesn't exist or broken because of
hardware BUG. Fix it by testing twd_evt and *__this_cpu_ptr(twd_evt).

The issue was observed with v3.3-rc3 and building an OMAP2+ kernel
on OMAP3 SOC which doesn't have TWD.

Below is the dump for reference :

 Unable to handle kernel paging request at virtual address 007e900
 pgd = cdc20000
 [007e9000] *pgd=00000000
 Internal error: Oops: 5 [#1] SMP
 Modules linked in:
 CPU: 0    Not tainted  (3.3.0-rc3-pm+debug+initramfs #9)
 PC is at twd_update_frequency+0x34/0x48
 LR is at twd_update_frequency+0x10/0x48
 pc : [<c001382c>]    lr : [<c0013808>]    psr: 60000093
 sp : ce311dd8  ip : 00000000  fp : 00000000
 r10: 00000000  r9 : 00000001  r8 : ce310000
 r7 : c0440458  r6 : c00137f8  r5 : 00000000  r4 : c0947a74
 r3 : 00000000  r2 : 007e9000  r1 : 00000000  r0 : 00000000
 Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment usr
 Control: 10c5387d  Table: 8dc20019  DAC: 00000015
 Process sh (pid: 599, stack limit = 0xce3102f8)
 Stack: (0xce311dd8 to 0xce312000)
 1dc0:                                                       6000c
 1de0: 00000001 00000002 00000000 00000000 00000000 00000000 00000
 1e00: ffffffff c093d8f0 00000000 ce311ebc 00000001 00000001 ce310
 1e20: c001386c c0437c4c c0e95b60 c0e95ba8 00000001 c0e95bf8 ffff4
 1e40: 00000000 00000000 c005ef74 ce310000 c0435cf0 ce311ebc 00000
 1e60: ce352b40 0007a120 c08d5108 c08ba040 c08ba040 c005f030 00000
 1e80: c08bc554 c032fe2c 0007a120 c08d4b64 ce352b40 c08d8618 ffff8
 1ea0: c08ba040 c033364c ce311ecc c0433b50 00000002 ffffffea c0330
 1ec0: 0007a120 0007a120 22222201 00000000 22222222 00000000 ce357
 1ee0: ce3d6000 cdc2aed8 ce352ba0 c0470164 00000002 c032f47c 00034
 1f00: c0331cac ce352b40 00000007 c032f6d0 ce352bbc 0003d090 c0930
 1f20: c093d8bc c03306a4 00000007 ce311f80 00000007 cdc2aec0 ce358
 1f40: ce8d20c0 00000007 b6fe5000 ce311f80 00000007 ce310000 0000c
 1f60: c000de74 ce987400 ce8d20c0 b6fe5000 00000000 00000000 0000c
 1f80: 00000000 00000000 001fbac8 00000000 00000007 001fbac8 00004
 1fa0: c000df04 c000dd60 00000007 001fbac8 00000001 b6fe5000 00000
 1fc0: 00000007 001fbac8 00000007 00000004 b6fe5000 00000000 00202
 1fe0: 00000000 beb565f8 00101ffc 00008e8c 60000010 00000001 00000
 [<c001382c>] (twd_update_frequency+0x34/0x48) from [<c008ac4c>] )
 [<c008ac4c>] (smp_call_function_single+0x17c/0x1c8) from [<c0013)
 [<c0013890>] (twd_cpufreq_transition+0x24/0x30) from [<c0437c4c>)
 [<c0437c4c>] (notifier_call_chain+0x44/0x84) from [<c005efe4>] ()
 [<c005efe4>] (__srcu_notifier_call_chain+0x70/0xa4) from [<c005f)
 [<c005f030>] (srcu_notifier_call_chain+0x18/0x20) from [<c032fe2)
 [<c032fe2c>] (cpufreq_notify_transition+0xc8/0x1b0) from [<c0333)
 [<c033364c>] (omap_target+0x1b4/0x28c) from [<c032f47c>] (__cpuf)
 [<c032f47c>] (__cpufreq_driver_target+0x50/0x64) from [<c0331d24)
 [<c0331d24>] (cpufreq_set+0x78/0x98) from [<c032f6d0>] (store_sc)
 [<c032f6d0>] (store_scaling_setspeed+0x5c/0x74) from [<c03306a4>)
 [<c03306a4>] (store+0x58/0x74) from [<c014d868>] (sysfs_write_fi)
 [<c014d868>] (sysfs_write_file+0x80/0xb4) from [<c00f2c2c>] (vfs)
 [<c00f2c2c>] (vfs_write+0xa8/0x138) from [<c00f2e9c>] (sys_write)
 [<c00f2e9c>] (sys_write+0x40/0x6c) from [<c000dd60>] (ret_fast_s)
 Code: e594300c e792210c e1a01000 e5840004 (e7930002)
 ---[ end trace 5da3b5167c1ecdda ]---
Reported-by: NKevin Hilman <khilman@ti.com>
Acked-by: NMarc Zyngier <marc.zyngier@arm.com>
Tested-by: NKevin Hilman <khilman@ti.com>
Signed-off-by: NSantosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

(And define it properly for x86-32, which had its 'current_task'
declaration in separate from x86-64)

Bitten by my dislike for modules on the machines I use, and the fact
that apparently nobody else actually wanted to test the patches I sent
out.

Snif. Nobody else cares.

Anyway, we probably should uninline the 'kernel_fpu_begin()' function
that is what modules actually use and that references this, but this is
the minimal fix for now.
Reported-by: NJosh Boyer <jwboyer@gmail.com>
Reported-and-tested-by: NJongman Heo <jongman.heo@samsung.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Assorted fixes, sat in -next for a week or so...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ocfs2: deal with wraparounds of i_nlink in ocfs2_rename()
  vfs: fix compat_sys_stat() handling of overflows in st_nlink
  quota: Fix deadlock with suspend and quotas
  vfs: Provide function to get superblock and wait for it to thaw
  vfs: fix panic in __d_lookup() with high dentry hashtable counts
  autofs4 - fix lockdep splat in autofs
  vfs: fix d_inode_lookup() dentry ref leak