mm: fix faulty initialization in vmalloc_init()

commit dbda591d920b4c7692725b13e3f68ecb251e9080 upstream.

The transfer of ->flags causes some of the static mapping virtual
addresses to be prematurely freed (before the mapping is removed) because
VM_LAZY_FREE gets "set" if tmp->flags has VM_IOREMAP set.  This might
cause subsequent vmalloc/ioremap calls to fail because it might allocate
one of the freed virtual address ranges that aren't unmapped.

va->flags has different types of flags from tmp->flags.  If a region with
VM_IOREMAP set is registered with vm_area_add_early(), it will be removed
by __purge_vmap_area_lazy().

Fix vmalloc_init() to correctly initialize vmap_area for the given
vm_struct.

Also initialise va->vm.  If it is not set, find_vm_area() for the early
vm regions will always fail.

Signed-off-by: KyongHo Cho <pullip.cho@samsung.com>
Cc: "Olav Haugan" <ohaugan@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
hugetlb: fix resv_map leak in error path

commit c50ac050811d6485616a193eb0f37bfbd191cc89 and
4523e1458566a0e8ecfaff90f380dd23acc44d27 upstream.

When called for anonymous (non-shared) mappings, hugetlb_reserve_pages()
does a resv_map_alloc().  It depends on code in hugetlbfs's
vm_ops->close() to release that allocation.

However, in the mmap() failure path, we do a plain unmap_region() without
the remove_vma() which actually calls vm_ops->close().

This is a decent fix.  This leak could get reintroduced if new code (say,
after hugetlb_reserve_pages() in hugetlbfs_file_mmap()) decides to return
an error.  But, I think it would have to unroll the reservation anyway.

Christoph's test case:

	http://marc.info/?l=linux-mm&m=133728900729735

This patch applies to 3.4 and later.  A version for earlier kernels is at
https://lkml.org/lkml/2012/5/22/418.

Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>
Acked-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reported-by: Christoph Lameter <cl@linux.com>
Tested-by: Christoph Lameter <cl@linux.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
Linux 3.0.35

Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
ARM i.MX imx21ads: Fix overlapping static i/o mappings

commit 350ab15bb2ffe7103bc6bf6c634f3c5b286eaf2a upstream.

The statically defined I/O memory regions for the i.MX21 on chip
peripherals and the on board I/O peripherals of the i.MX21ADS board
overlap. This results in a kernel crash during startup. This is fixed
by reducing the memory range for the on board I/O peripherals to the
actually required range.

Signed-off-by: Jaccon Bastiaansen <jaccon.bastiaansen@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
xen/setup: filter APERFMPERF cpuid feature out

commit 5e626254206a709c6e937f3dda69bf26c7344f6f upstream.

Xen PV kernels allow access to the APERF/MPERF registers to read the
effective frequency. Access to the MSRs is however redirected to the
currently scheduled physical CPU, making consecutive read and
compares unreliable. In addition each rdmsr traps into the hypervisor.
So to avoid bogus readouts and expensive traps, disable the kernel
internal feature flag for APERF/MPERF if running under Xen.
This will
a) remove the aperfmperf flag from /proc/cpuinfo
b) not mislead the power scheduler (arch/x86/kernel/cpu/sched.c) to
   use the feature to improve scheduling (by default disabled)
c) not mislead the cpufreq driver to use the MSRs

This does not cover userland programs which access the MSRs via the
device file interface, but this will be addressed separately.

Signed-off-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
NFSv4.1: Fix a request leak on the back channel

commit b3b02ae5865c2dcd506322e0fc6def59a042e72f upstream.

If the call to svc_process_common() fails, then the request
needs to be freed before we can exit bc_svc_process.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
USB: option: Add Vodafone/Huawei K5005 support

commit 4cbbb039a9719fb3bba73d255c6a95bc6dc6428b upstream.

Tested-by: Thomas Schäfer <tschaefer@t-online.de>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
USB: option: Updated Huawei K4605 has better id

commit 42ca7da1c2363dbef4ba1b6917c4c02274b6a5e2 upstream.

Later firmwares for this device now have proper subclass and
protocol info so we can identify it nicely without needing to use
the blacklist. I'm not removing the old 0xff matching as there
may be devices in the field that still need that.

Signed-off-by: Andrew Bird <ajb@spheresystems.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
USB: option: add more YUGA device ids

commit 0ef0be15fd2564767f114c249fc4af704d8e16f4 upstream.

Signed-off-by: gavin zhu <gavin.zhu@qq.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
USB: option: fix memory leak

commit b9c3aab315b51f81649a0d737c4c73783fbd8de0 upstream.

Fix memory leak introduced by commit 383cedc3bb435de7a2 ("USB: serial:
full autosuspend support for the option driver") which allocates
usb-serial data but never frees it.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
USB: option: fix port-data abuse

commit 4273f9878b0a8271df055e3c8f2e7f08c6a4a2f4 upstream.

Commit 8b4c6a3ab596961b78465 ("USB: option: Use generic USB wwan code")
moved option port-data allocation to usb_wwan_startup but still cast the
port data to the old struct...

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
hfsplus: fix overflow in sector calculations in hfsplus_submit_bio

commit a6dc8c04218eb752ff79cdc24a995cf51866caed upstream.

The variable io_size was unsigned int, which caused the wrong sector number
to be calculated after aligning it. This then caused mount to fail with big
volumes, as backup volume header information was searched from a
wrong sector.

Signed-off-by: Janne Kalliomäki <janne@tuxera.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
xHCI: Increase the timeout for controller save/restore state operation

commit 622eb783fe6ff4c1baa47db16c3a5db97f9e6e50 upstream.

When system software decides to power down the xHC with the intent of
resuming operation at a later time, it will ask xHC to save the internal
state and restore it when resume to correctly recover from a power event.
Two bits are used to enable this operation: Save State and Restore State.

xHCI spec 4.23.2 says software should "Set the Controller Save/Restore
State flag in the USBCMD register and wait for the Save/Restore State
Status flag in the USBSTS register to transition to '0'". However, it does
not define how long software should wait for the SSS/RSS bit to transition
to 0.

Currently the timeout is set to 1ms. There is bug report
(https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1002697)
indicates that the timeout is too short for ASMedia ASM1042 host controller
to save/restore the state successfully. Increase the timeout to 10ms helps to
resolve the issue.

This patch should be backported to stable kernels as old as 2.6.37, that
contain the commit 5535b1d5f8885695c6ded783c692e3c0d0eda8ca "USB: xHCI:
PCI power management implementation"

Signed-off-by: Andiry Xu <andiry.xu@gmail.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
USB: mos7840: Fix compilation of usb serial driver

commit b9c87663eead64c767e72a373ae6f8a94bead459 upstream.

The __devinitconst section can't be referenced
from usb_serial_device structure. Thus removed it as
it done in other mos* device drivers.

Error itself:
WARNING: drivers/usb/serial/mos7840.o(.data+0x8): Section mismatch in reference
from the variable moschip7840_4port_device to the variable
.devinit.rodata:id_table
The variable moschip7840_4port_device references
the variable __devinitconst id_table

[v2] no attach now

Signed-off-by: Tony Zelenoff <antonz@parallels.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
USB: qcserial: Add Sierra Wireless device IDs

commit c41444ccfa33a1c20efa319e554cb531576e64a2 upstream.

Some additional IDs found in the BSD/GPL licensed out-of-tree
GobiSerial driver from Sierra Wireless.

Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
USB: mct_u232: Fix incorrect TIOCMSET return

commit 1aa3c63cf0a79153ee13c8f82e4eb6c40b66a161 upstream.

The low level helper returns 1 on success. The ioctl should however return
0. As this is the only user of the helper return, make the helper return 0 or
an error code.

Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=43009
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
USB: serial: cp210x: add Optris MS Pro usb id

commit 5bbfa6f427c1d7244a5ee154ab8fa37265a5e049 upstream.

Signed-off-by: Mikko Tuumanen <mikko.tuumanen@qemsoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>
USB: ftdi-sio: Add support for RT Systems USB-RTS01 serial adapter

commit e00a54d772210d450e5c1a801534c3c8a448549f upstream.

Add support for RT Systems USB-RTS01 USB to Serial adapter:
http://www.rtsystemsinc.com/Photos/USBRTS01.html

Tested by controlling Icom IC-718 amateur radio transceiver via hamlib.

Signed-off-by: Evan McNabb <evan@mcnabbs.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: bgn9000 <bgn9000@ubuntu.ubuntu-domain>