The gpiochip_lock_as_irq call can fail and return an error,
while the irq_startup is not expected to fail (returns an
unsigned int which is not checked by irq core code).
irq_request/release_resources functions have been created
to address this problem.
Move gpiochip_lock/unlock_as_irq calls into
irq_request/release_resources functions to prevent using a
gpio as an irq if the gpiochip_lock_as_irq call failed.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Pull x86 fixes from Ingo Molnar:
"Misc fixes from all around the place:
- a KASLR related revert where we ran out of time to get a fix - this
represents a substantial portion of the diffstat,
- two FPU fixes,
- two x86 platform fixes: an ACPI reduced-hw fix and a NumaChip fix,
- an entry code fix,
- and a VDSO build fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
Revert "x86/mm/ASLR: Propagate base load address calculation"
x86/fpu: Drop_fpu() should not assume that tsk equals current
x86/fpu: Avoid math_state_restore() without used_math() in __restore_xstate_sig()
x86/apic/numachip: Fix sibling map with NumaChip
x86/platform, acpi: Bypass legacy PIC and PIT in ACPI hardware reduced mode
x86/asm/entry/32: Fix user_mode() misuses
x86/vdso: Fix the build on GCC5
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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
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
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
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
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
Boris Brezillon