Commit Graph

507697 Commits

Author SHA1 Message Date
Linus Torvalds
13326e5a62 Merge branches 'perf-urgent-for-linus' and 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf and timer fixes from Ingo Molnar:
 "Two small perf fixes:
   - kernel side context leak fix
   - tooling crash fix

  And two clocksource driver fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Fix context leak in put_event()
  perf annotate: Fix fallback to unparsed disassembler line

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clockevents: sun5i: Fix setup_irq init sequence
  clocksource: efm32: Fix a NULL pointer dereference
2015-03-17 13:22:29 -07:00
Benjamin Tissoires
e2c7d8877e HID: wacom: check for wacom->shared before following the pointer
486b908 (HID: wacom: do not send pen events before touch is up/forced out)
introduces a kernel oops when plugging a tablet without touch.

wacom->shared is null for these devices so this leads to a null pointer
exception.

Change the condition to make it clear that what we need is wacom->shared
not NULL.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-03-17 20:59:55 +01:00
David S. Miller
9f2dbdd9b1 Merge branch 'listener_refactor_part_11'
Eric Dumazet says:

====================
inet: tcp listener refactoring, part 11

Before inserting request sockets into general (ehash) table,
we need to prepare netfilter to cope with them, as they are
not full sockets.

I'll later change xt_socket to get full support, including for
request sockets (NEW_SYN_RECV)

Save 8 bytes in inet_request_sock on 64bit arches. We'll soon add
a pointer to the listener socket.

I included two TCP changes in this patch series.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:18:12 -04:00
Eric Dumazet
7970ddc8f9 tcp: uninline tcp_oow_rate_limited()
tcp_oow_rate_limited() is hardly used in fast path, there is
no point inlining it.

Signed-of-by: Eric Dumazet <edumazet@google.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:18:00 -04:00
Eric Dumazet
1bfc4438a7 tcp: move tcp_openreq_init() to tcp_input.c
This big helper is called once from tcp_conn_request(), there is no
point having it in an include. Compiler will inline it anyway.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:18:00 -04:00
Eric Dumazet
adc17d6a6c inet: move ir_mark to fill a hole
On 64bit arches, we can save 8 bytes in inet_request_sock
by moving ir_mark to fill a hole.

While we are at it, inet_request_mark() can get a const qualifier
for listener socket.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:17:59 -04:00
Eric Dumazet
a940700003 netfilter: xt_socket: prepare for TCP_NEW_SYN_RECV support
TCP request socks soon will be visible in ehash table.

xt_socket will be able to match them, but first we need
to make sure to not consider them as full sockets.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:17:59 -04:00
Eric Dumazet
8b58014779 netfilter: tproxy: prepare TCP_NEW_SYN_RECV support
TCP request socks soon will be visible in ehash table.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:17:59 -04:00
Eric Dumazet
a8399231f0 netfilter: use sk_fullsock() helper
Upcoming request sockets have TCP_NEW_SYN_RECV state and should
be special cased a bit like TCP_TIME_WAIT sockets.

Signed-off-by; Eric Dumazet <edumazet@google.com>

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:17:59 -04:00
Alexei Starovoitov
c249739579 bpf: allow BPF programs access 'protocol' and 'vlan_tci' fields
as a follow on to patch 70006af955 ("bpf: allow eBPF access skb fields")
this patch allows 'protocol' and 'vlan_tci' fields to be accessible
from extended BPF programs.

The usage of 'protocol', 'vlan_present' and 'vlan_tci' fields is the same as
corresponding SKF_AD_PROTOCOL, SKF_AD_VLAN_TAG_PRESENT and SKF_AD_VLAN_TAG
accesses in classic BPF.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:06:31 -04:00
Robert Jarzmik
8d7d9cca43 Revert "smc91x: retrieve IRQ and trigger flags in a modern way"
The commit breaks the legacy platforms, ie. these not using device-tree,
and setting up the interrupt resources with a flag to activate edge
detection. The issue was found on the zylonite platform.

The reason is that zylonite uses platform resources to pass the interrupt number
and the irq flags (here IORESOURCE_IRQ_HIGHEDGE). It expects the driver to
request the irq with these flags, which in turn setups the irq as high edge
triggered.

After the patch, this was supposed to be taken care of with :
  irq_resflags = irqd_get_trigger_type(irq_get_irq_data(ndev->irq));

But irq_resflags is 0 for legacy platforms, while for example in
arch/arm/mach-pxa/zylonite.c, in struct resource smc91x_resources[] the
irq flag is specified. This breaks zylonite because the interrupt is not
setup as triggered, and hardware doesn't provide interrupts.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:04:57 -04:00
Eric Dumazet
cb7cf8a33f inet: Clean up inet_csk_wait_for_connect() vs. might_sleep()
I got the following trace with current net-next kernel :

[14723.885290] WARNING: CPU: 26 PID: 22658 at kernel/sched/core.c:7285 __might_sleep+0x89/0xa0()
[14723.885325] do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff810e8734>] prepare_to_wait_exclusive+0x34/0xa0
[14723.885355] CPU: 26 PID: 22658 Comm: netserver Not tainted 4.0.0-dbg-DEV #1379
[14723.885359]  ffffffff81a223a8 ffff881fae9e7ca8 ffffffff81650b5d 0000000000000001
[14723.885364]  ffff881fae9e7cf8 ffff881fae9e7ce8 ffffffff810a72e7 0000000000000000
[14723.885367]  ffffffff81a57620 000000000000093a 0000000000000000 ffff881fae9e7e64
[14723.885371] Call Trace:
[14723.885377]  [<ffffffff81650b5d>] dump_stack+0x4c/0x65
[14723.885382]  [<ffffffff810a72e7>] warn_slowpath_common+0x97/0xe0
[14723.885386]  [<ffffffff810a73e6>] warn_slowpath_fmt+0x46/0x50
[14723.885390]  [<ffffffff810f4c5d>] ? trace_hardirqs_on_caller+0x10d/0x1d0
[14723.885393]  [<ffffffff810e8734>] ? prepare_to_wait_exclusive+0x34/0xa0
[14723.885396]  [<ffffffff810e8734>] ? prepare_to_wait_exclusive+0x34/0xa0
[14723.885399]  [<ffffffff810ccdc9>] __might_sleep+0x89/0xa0
[14723.885403]  [<ffffffff81581846>] lock_sock_nested+0x36/0xb0
[14723.885406]  [<ffffffff815829a3>] ? release_sock+0x173/0x1c0
[14723.885411]  [<ffffffff815ea1f7>] inet_csk_accept+0x157/0x2a0
[14723.885415]  [<ffffffff810e8900>] ? abort_exclusive_wait+0xc0/0xc0
[14723.885419]  [<ffffffff8161b96d>] inet_accept+0x2d/0x150
[14723.885424]  [<ffffffff8157db6f>] SYSC_accept4+0xff/0x210
[14723.885428]  [<ffffffff8165a451>] ? retint_swapgs+0xe/0x44
[14723.885431]  [<ffffffff810f4c5d>] ? trace_hardirqs_on_caller+0x10d/0x1d0
[14723.885437]  [<ffffffff81369c0e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
[14723.885441]  [<ffffffff8157ef40>] SyS_accept+0x10/0x20
[14723.885444]  [<ffffffff81659872>] system_call_fastpath+0x12/0x17
[14723.885447] ---[ end trace ff74cd83355b1873 ]---

In commit 26cabd3125
Peter added a sched_annotate_sleep() in sk_wait_event()

Is the following patch needed as well ?

Alternative would be to use sk_wait_event() from inet_csk_wait_for_connect()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:03:54 -04:00
Nicolas Dichtel
37355565ba ip6_tunnel: fix error code when tunnel exists
After commit 2b0bb01b6e, the kernel returns -ENOBUFS when user tries to add
an existing tunnel with ioctl API:
$ ip -6 tunnel add ip6tnl1 mode ip6ip6 dev eth1
add tunnel "ip6tnl0" failed: No buffer space available

It's confusing, the right error is EEXIST.

This patch also change a bit the code returned:
 - ENOBUFS -> ENOMEM
 - ENOENT -> ENODEV

Fixes: 2b0bb01b6e ("ip6_tunnel: Return an error when adding an existing tunnel.")
CC: Steffen Klassert <steffen.klassert@secunet.com>
Reported-by: Pierre Cheynier <me@pierre-cheynier.net>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:01:18 -04:00
David S. Miller
9cf7867c24 Merge branch 'const_of_device_id'
Fabian Frederick says:

====================
drivers/net: constify of_device_id array

This small patchset adds const to of_device_id arrays in
drivers/net branch.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:28 -04:00
Fabian Frederick
2c71ec9963 via-velocity: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:24 -04:00
Fabian Frederick
d2b75a3f7d net: via-rhine: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:23 -04:00
Fabian Frederick
abae1e0718 ehea: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:23 -04:00
Fabian Frederick
47b6166793 IBM-EMAC: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:23 -04:00
Fabian Frederick
486e957033 can: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:23 -04:00
Fabian Frederick
d8a7dadbdf net: phy: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:23 -04:00
Fabian Frederick
3848124b3e orinoco: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:22 -04:00
Fabian Frederick
74847f231c net: xilinx: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:22 -04:00
Fabian Frederick
73c7047464 net: greth: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:22 -04:00
Fabian Frederick
437dab40bb netdev: octeon_mgmt: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:22 -04:00
Fabian Frederick
14448e2f80 net: ethernet: apple: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:22 -04:00
Fabian Frederick
a6b0dc2af4 drivers: net: xgene: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:21 -04:00
Fabian Frederick
fa2b183726 net: ethoc: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:21 -04:00
Fabian Frederick
94e5a2a88a net/fsl: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:21 -04:00
Fabian Frederick
27260530db Altera TSE: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:21 -04:00
Fabian Frederick
1156c96538 net: netcp: constify of_device_id array
of_device_id is always used as const.
(See driver.of_match_table and open firmware functions)

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 15:00:21 -04:00
Nicolas Dichtel
ad41faa88e netdevice.h: fix ndo_bridge_* comments
The argument 'flags' was missing in ndo_bridge_setlink().
ndo_bridge_dellink() was missing.

Fixes: 407af3299e ("bridge: Add netlink interface to configure vlans on bridge ports")
Fixes: add511b382 ("bridge: add flags argument to ndo_bridge_setlink and ndo_bridge_dellink")
CC: Vlad Yasevich <vyasevic@redhat.com>
CC: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-17 14:58:39 -04:00
Johan Hedberg
19c5ce9c5f Bluetooth: Add workaround for broken OS X legacy SMP pairing
OS X version 10.10.2 (and possibly older versions) doesn't support LE
Secure Connections but incorrectly copies all authentication request
bits from a Security Request to its Pairing Request. The result is that
an SC capable initiator (such as BlueZ) will think OS X intends to do SC
when in fact it's incapable of it:

< ACL Data TX: Handle 3585 flags 0x00 dlen 6
      SMP: Security Request (0x0b) len 1
        Authentication requirement: Bonding, No MITM, SC, No Keypresses (0x09)
> ACL Data RX: Handle 3585 flags 0x02 dlen 11
      SMP: Pairing Request (0x01) len 6
        IO capability: KeyboardDisplay (0x04)
        OOB data: Authentication data not present (0x00)
        Authentication requirement: Bonding, No MITM, SC, No Keypresses (0x09)
        Max encryption key size: 16
        Initiator key distribution: EncKey (0x01)
        Responder key distribution: EncKey IdKey Sign (0x07)
< ACL Data TX: Handle 3585 flags 0x00 dlen 11
      SMP: Pairing Response (0x02) len 6
        IO capability: NoInputNoOutput (0x03)
        OOB data: Authentication data not present (0x00)
        Authentication requirement: Bonding, No MITM, SC, No Keypresses (0x09)
        Max encryption key size: 16
        Initiator key distribution: EncKey (0x01)
        Responder key distribution: EncKey Sign (0x05)

The pairing eventually fails when we get an unexpected Pairing Confirm
PDU instead of a Public Key PDU:

> ACL Data RX: Handle 3585 flags 0x02 dlen 21
      SMP: Pairing Confirm (0x03) len 16
        Confim value: bcc3bed31b8f313a78ec3cce32685faf

It is only at this point that we can speculate that the remote doesn't
really support SC. This patch creates a workaround for the just-works
model, however the MITM case is unsolvable because the OS X user has
already been requested to enter a PIN which we're now expected to
randomly generate and show the user (i.e. a chicken-and-egg problem).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-03-17 18:58:24 +01:00
Linus Torvalds
8e6e44fbd2 regulator: Fixes for v4.0
The two main fixes here from Javier and Doug both fix issues seen on the
 Exynos-based ARM Chromebooks with reference counting of GPIO regulators
 over system suspend.  The GPIO enable code didn't properly take account
 of this cases (a full analysis is in Doug's commit log).  This is fixed
 by both fixing the reference counting directly and by making the resume
 code skip enables it doesn't need to do.  We could skip the change in
 the resume code but it's a very simple change and adds extra robustness
 against problems in other drivers.
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Merge tag 'regulator-fix-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "The two main fixes here from Javier and Doug both fix issues seen on
  the Exynos-based ARM Chromebooks with reference counting of GPIO
  regulators over system suspend.  The GPIO enable code didn't properly
  take account of this case (a full analysis is in Doug's commit log).

  This is fixed by both fixing the reference counting directly and by
  making the resume code skip enables it doesn't need to do.  We could
  skip the change in the resume code but it's a very simple change and
  adds extra robustness against problems in other drivers"

* tag 'regulator-fix-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: tps65910: Add missing #include <linux/of.h>
  regulator: core: Fix enable GPIO reference counting
  regulator: Only enable disabled regulators on resume
2015-03-17 10:47:06 -07:00
Linus Torvalds
529d2eb679 regmap: Fixes for v4.0
A few things here:
 
  - A change from Lars to fix insertion of cache values at the start of
    rather than end of a rbtree block.  This hadn't been noticed before
    since almost everything lists registers in ascending order.
  - A fix from Takashi for spurious warnings during cache sync with read
    once registers, a problem which can be very noticeable on devices
    that it affects.
  - A fix from Valentin for a tighening of the oneshot IRQ request
    interface which would have broken affected devices.
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Merge tag 'regmap-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

Pull regmap fixes from Mark Brown:
 "A few things here:

   - a change from Lars to fix insertion of cache values at the start of
     rather than end of a rbtree block.  This hadn't been noticed before
     since almost everything lists registers in ascending order.

   - a fix from Takashi for spurious warnings during cache sync with
     read once registers, a problem which can be very noticeable on
     devices that it affects.

   - a fix from Valentin for a tighening of the oneshot IRQ request
     interface which would have broken affected devices"

* tag 'regmap-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: regcache-rbtree: Fix present bitmap resize
  regmap: Skip read-only registers in regcache_sync()
  regmap-irq: set IRQF_ONESHOT flag to ensure IRQ request
2015-03-17 10:41:26 -07:00
Linus Torvalds
4d272f90a7 Not entirely surprising: the ongoing QEMU work on virtio 1.0 has revealed
more minor issues with our virtio 1.0 drivers just introduced in the
 kernel.
 
 (I would normally use my fixes branch for this, but there were a batch of them...)
 
 Thanks,
 Rusty.
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Merge tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull virtio fixes from Rusty Russell:
 "Not entirely surprising: the ongoing QEMU work on virtio 1.0 has
  revealed more minor issues with our virtio 1.0 drivers just introduced
  in the kernel.

  (I would normally use my fixes branch for this, but there were a batch
  of them...)"

* tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  virtio_mmio: fix access width for mmio
  uapi/virtio_scsi: allow overriding CDB/SENSE size
  virtio_mmio: generation support
  virtio_rpmsg: set DRIVER_OK before using device
  9p/trans_virtio: fix hot-unplug
  virtio-balloon: do not call blocking ops when !TASK_RUNNING
  virtio_blk: fix comment for virtio 1.0
  virtio_blk: typo fix
  virtio_balloon: set DRIVER_OK before using device
  virtio_console: avoid config access from irq
  virtio_console: init work unconditionally
2015-03-17 10:36:01 -07:00
Linus Torvalds
2fc67756e3 Merge git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull kvm fixes from Marcelo Tosatti:
 "KVM bug fixes (ARM and x86)"

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  arm/arm64: KVM: Keep elrsr/aisr in sync with software model
  KVM: VMX: Set msr bitmap correctly if vcpu is in guest mode
  arm/arm64: KVM: fix missing unlock on error in kvm_vgic_create()
  kvm: x86: i8259: return initialized data on invalid-size read
  arm64: KVM: Fix outdated comment about VTCR_EL2.PS
  arm64: KVM: Do not use pgd_index to index stage-2 pgd
  arm64: KVM: Fix stage-2 PGD allocation to have per-page refcounting
  kvm: move advertising of KVM_CAP_IRQFD to common code
2015-03-17 10:31:36 -07:00
Johan Hedberg
fa4335d71a Bluetooth: Move generic mgmt command dispatcher to hci_sock.c
The mgmt.c file should be reserved purely for HCI_CHANNEL_CONTROL. The
mgmt_control() function in it is already completely generic and has a
single user in hci_sock.c. This patch moves the function there and
renames it a bit more appropriately to hci_mgmt_cmd() (as it's a command
dispatcher).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-03-17 18:03:08 +01:00
Johan Hedberg
88b94ce925 Bluetooth: Add hdev_init callback for HCI channels
In order to make the mgmt command handling more generic we can't have a
direct call to mgmt_init_hdev() from mgmt_control(). This patch adds a
new callback to struct hci_mgmt_chan. And sets it to point to the
mgmt_init_hdev() function for the HCI_CHANNEL_CONTROL instance.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-03-17 18:03:08 +01:00
Johan Hedberg
a380b6cff1 Bluetooth: Add generic mgmt helper API
There are several mgmt protocol features that will be needed by more
than just the current HCI_CHANNEL_CONTROL. These include sending generic
events as well as handling pending commands. This patch moves these
functions out from mgmt.c to a new mgmt_util.c file.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-03-17 18:03:08 +01:00
Johan Hedberg
333ae95d05 Bluetooth: Add channel parameter to mgmt_pending_find() API
To be able to have pending commands for different HCI channels we need
to be able to distinguish for which channel a command was sent to. The
channel information is already part of the socket data and can be
fetched using the recently added hci_sock_get_channel() function. To not
require all mgmt.c code to pass an extra channel parameter this patch
also adds a helper pending_find() & pending_find_data() functions which
act as a wrapper to the new mgmt_pending_find() & mgmt_pending_find_data()
APIs.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-03-17 18:03:08 +01:00
Johan Hedberg
d0f172b14a Bluetooth: Add helper to get HCI channel of a socket
We'll need to have access to which HCI channel a socket is bound to, in
order to manage pending mgmt commands in clean way. This patch adds a
helper for the purpose.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-03-17 18:03:07 +01:00
Kirill A. Shutemov
ab676b7d6f pagemap: do not leak physical addresses to non-privileged userspace
As pointed by recent post[1] on exploiting DRAM physical imperfection,
/proc/PID/pagemap exposes sensitive information which can be used to do
attacks.

This disallows anybody without CAP_SYS_ADMIN to read the pagemap.

[1] http://googleprojectzero.blogspot.com/2015/03/exploiting-dram-rowhammer-bug-to-gain.html

[ Eventually we might want to do anything more finegrained, but for now
  this is the simple model.   - Linus ]

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Acked-by: Andy Lutomirski <luto@amacapital.net>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mark Seaborn <mseaborn@chromium.org>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-03-17 09:31:30 -07:00
Jakub Pawlowski
49c989a0d6 Bluetooth: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for BTUSB_CSR
CSR controllers can do both LE scan and BR/EDR inquiry at once.

Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-17 18:31:05 +02:00
Jakub Pawlowski
c11548427d Bluetooth: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for BTUSB_INTEL
Intel controllers can do both LE scan and BR/EDR inquiry at once.

Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-17 18:31:03 +02:00
Jakub Pawlowski
3d50d51a53 Bluetooth: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for BTUSB_ATH3012
Atheros controllers can do both LE scan and BR/EDR inquiry at once.

Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-17 18:31:02 +02:00
Jakub Pawlowski
07d2334ae7 Bluetooth: Add simultaneous dual mode scan
When doing scan through mgmt api, some controllers can do both le and
classic scan at same time. They can be distinguished by
HCI_QUIRK_SIMULTANEOUS_DISCOVERY set.

This patch enables them to use this feature when doing dual mode scan.
Instead of doing le, then classic scan, both scans are run at once.

Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-17 18:31:00 +02:00
Jakub Pawlowski
812abb13a9 Bluetooth: Refactor BR/EDR inquiry and LE scan triggering.
This patch refactor BR/EDR inquiry and LE scan triggering logic into
separate methods.

Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-17 18:30:59 +02:00
Jakub Pawlowski
695c4cb619 Bluetooth: Introduce HCI_QUIRK_SIMULTANEOUS_DISCOVERY
Some controllers allow both LE scan and BR/EDR inquiry to run at
the same time, while others allow only one, LE SCAN or BR/EDR
inquiry at given time.

Since this is specific to each controller, add a new quirk setting
that allows drivers to tell the core wether given controller can
do both LE scan and BR/EDR inquiry at same time.

Signed-off-by: Jakub Pawlowski <jpawlowski@google.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-03-17 18:30:58 +02:00
Alexander Aring
d907c4f05c at86rf230: fix at86rf230_read_subreg succeed handling
This patch fix an issue when at86rf230_read_subreg was successful. The
function at86rf230_read_subreg will directly call regmap_read which
returns zero on successful. Nobody figured out issues yet because it was
only necessary to evaluate dvdd state while probing. This could make
trouble because the stack variable could have an random value.

The function is also used by reset the irq line before requesting irq, but
the value isn't evaluated afterwards.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-03-17 16:30:57 +01:00
Takashi Iwai
3fc6c5a1cf ASoC: Fixes for v4.0
As well as the usual collection of driver specific fixes there's a few
 more generic things:
 
  - Lots of fixes from Takashi for drivers using the wrong field in the
    control union to communicate with userspace, leading to potential
    errors on 64 bit systems.
  - A fix from Lars for locking of the lists of devices we maintain,
    mostly only likely to trigger during device probe and removal.
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Merge tag 'asoc-fix-v4.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v4.0

As well as the usual collection of driver specific fixes there's a few
more generic things:

 - Lots of fixes from Takashi for drivers using the wrong field in the
   control union to communicate with userspace, leading to potential
   errors on 64 bit systems.
 - A fix from Lars for locking of the lists of devices we maintain,
   mostly only likely to trigger during device probe and removal.
2015-03-17 16:30:26 +01:00