Commit graph

519745 commits

Author SHA1 Message Date
Benjamin Poirier
f94813f3c1 mlx4_en: Use correct loop cursor in error path.
Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Fixes: 9e311e7 ("net/mlx4_en: Use affinity hint")
Acked-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-30 16:25:14 -04:00
Jiang Liu
2c62e8492e x86/PCI/ACPI: Make all resources except [io 0xcf8-0xcff] available on PCI bus
An IO port or MMIO resource assigned to a PCI host bridge may be
consumed by the host bridge itself or available to its child
bus/devices. The ACPI specification defines a bit (Producer/Consumer)
to tell whether the resource is consumed by the host bridge itself,
but firmware hasn't used that bit consistently, so we can't rely on it.

Before commit 593669c2ac ("x86/PCI/ACPI: Use common ACPI resource
interfaces to simplify implementation"), arch/x86/pci/acpi.c ignored
all IO port resources defined by acpi_resource_io and
acpi_resource_fixed_io to filter out IO ports consumed by the host
bridge itself.

Commit 593669c2ac ("x86/PCI/ACPI: Use common ACPI resource interfaces
to simplify implementation") started accepting all IO port and MMIO
resources, which caused a regression that IO port resources consumed
by the host bridge itself became available to its child devices.

Then commit 63f1789ec7 ("x86/PCI/ACPI: Ignore resources consumed by
host bridge itself") ignored resources consumed by the host bridge
itself by checking the IORESOURCE_WINDOW flag, which accidently removed
MMIO resources defined by acpi_resource_memory24, acpi_resource_memory32
and acpi_resource_fixed_memory32.

On x86 and IA64 platforms, all IO port and MMIO resources are assumed
to be available to child bus/devices except one special case:
    IO port [0xCF8-0xCFF] is consumed by the host bridge itself
    to access PCI configuration space.

So explicitly filter out PCI CFG IO ports[0xCF8-0xCFF]. This solution
will also ease the way to consolidate ACPI PCI host bridge common code
from x86, ia64 and ARM64.

Related ACPI table are archived at:
https://bugzilla.kernel.org/show_bug.cgi?id=94221

Related discussions at:
http://patchwork.ozlabs.org/patch/461633/
https://lkml.org/lkml/2015/3/29/304

Fixes: 63f1789ec7 (Ignore resources consumed by host bridge itself)
Reported-by: Bernhard Thaler <bernhard.thaler@wvnet.at>
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: 4.0+ <stable@vger.kernel.org> # 4.0+
Reviewed-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-04-30 22:17:34 +02:00
Peter Ujfalusi
27796e755a ASoC: davinci-mcasp: Correct pm status check in suspend callback
pm_runtime_enabled() will only tell if the pm runtime has been enabled for
the device, which is done at probe time but will not tell the actual power
state of the device.
pm_runtime_active() provides this information.
This patch fixes a kernel crash when doing suspend when McASP is not
active.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-04-30 21:08:56 +01:00
Rafael J. Wysocki
50904a7ddd Merge branches 'acpica', 'acpi-battery' and 'pm-cpuidle' 2015-04-30 21:05:57 +02:00
Takashi Iwai
0ae3aba286 ASoC: Fixes for v4.1
A few fixes for v4.1, none earth shattering and mostly driver related
 except for one change to fix !PM builds for Intel platforms which is
 done by adding stubs in the core so other platforms don't run into the
 same issue.
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Merge tag 'asoc-v4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v4.1

A few fixes for v4.1, none earth shattering and mostly driver related
except for one change to fix !PM builds for Intel platforms which is
done by adding stubs in the core so other platforms don't run into the
same issue.
2015-04-30 19:08:06 +02:00
Alexander Aring
1add156466 ieee802154: trace: fix endian convertion
This patch fix endian convertions for extended address and short address
handling when TP_printk is called.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Cc: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:11 +02:00
Alexander Aring
d2c8bf51d0 at86rf230: add slp_tr support to start tx
This patch adds support for one of the slp_tr gpio use cases which
indicates the TX_START command without doing some spi bus traffic.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:11 +02:00
Alexander Aring
8500920317 at86rf230: change state change if from trx_off
If a transmit ends in a calibration which means the transceiver do a
TRX_OFF state change, we can directly change into TX_ARET state instead
doing a TX_ON to TX_ARET statechange.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:11 +02:00
Alexander Aring
2f8cdd9509 at86rf230: remove unnecessary tx state change
All supported transceivers can do a valid state change from TRX_OFF to
AACK_ON. This patch removes the state change chain from TRX_OFF ->
TX_ON -> AACK_ON instead we doing a directly state change from TRX_OFF
to AACK_ON.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:10 +02:00
Alexander Aring
3b951ca7d2 at86rf230: add TX_ARET_ON for calibration timeout
This patch adds a calibration timeout reset when change from TRX_OFF to
TX_ARET_ON which also occurs a calibration.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:10 +02:00
Alexander Aring
2ad33244db at86rf230: move cal_timeout to state change
This patch moves the calculation timeout of TRX_OFF to RX_AACK_ON
handling to the async state change functionality. With this patch we can
do a reset of calculation timeout when others TRX_OFF to RX_AACK_ON
happens instead of doing this on interface up only.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:10 +02:00
Alexander Aring
5e8e01e262 at86rf230: remove tabs after define
This patch cleanups the at86rf230 driver to use a space instead a tab
after define.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Reviewed-by: Varka Bhadram <varkabhadram@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:10 +02:00
Varka Bhadram
5b4a103904 cfg802154: pass name_assign_type to rdev_add_virtual_intf()
This code is based on commit 6bab2e19c5
("cfg80211: pass name_assign_type to rdev_add_virtual_intf()")

This will expose in sysfs whether the ifname of a IEEE-802.15.4
device is set by userspace or generated by the kernel.
We are using two types of name_assign_types
 o NET_NAME_ENUM: Default interface name provided by kernel
 o NET_NAME_USER: Interface name provided by user.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:10 +02:00
Christoffer Holmstedt
4748e86ecf at86rf230: Add macro for TRX STATE MASK
Instead of using the 'magic' number of 0x1f the TRX_STATE_MASK macro is
introduced.

Signed-off-by: Christoffer Holmstedt <christoffer.holmstedt@gmail.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:09 +02:00
Guido Günther
1cc800e7aa ieee802154: Add trace events for rdev->ops
Enabling tracing via

 echo 1 > /sys/kernel/debug/tracing/events/cfg802154/enable

enables event tracing like

 iwpan dev wpan0 set pan_id 0xbeef
 cat /sys/kernel/debug/tracing/trace
 # tracer: nop
 #
 # entries-in-buffer/entries-written: 2/2   #P:1
 #
 #                              _-----=> irqs-off
 #                             / _----=> need-resched
 #                            | / _---=> hardirq/softirq
 #                            || / _--=> preempt-depth
 #                            ||| /     delay
 #           TASK-PID   CPU#  ||||    TIMESTAMP  FUNCTION
 #              | |       |   ||||       |         |
            iwpan-2663  [000] ....   170.369142: 802154_rdev_set_pan_id: phy0, wpan_dev(1), pan id: 0xbeef
            iwpan-2663  [000] ....   170.369177: 802154_rdev_return_int: phy0, returned: 0

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:09 +02:00
Varka Bhadram
42fb23e2f5 mac802154: add description to mac802154 APIs
This patch adds the proper description to the mac802154 core APIs.

Signed-off-by: Varka Bhadram <varkab@cdac.in>
Acked-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:48:09 +02:00
Wei Yongjun
89eb6d0677 mac802154: llsec: fix return value check in llsec_key_alloc()
In case of error, the functions crypto_alloc_aead() and crypto_alloc_blkcipher()
returns ERR_PTR() and never returns NULL. The NULL test in the return value check
should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:46:28 +02:00
Alexander Aring
2b4d413c38 mac802154: fix ieee802154_register_hw error handling
Currently if ieee802154_if_add failed, we don't unregister the wpan phy
which was registered before. This patch adds a correct error handling
for unregister the wpan phy when ieee802154_if_add failed.

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 18:46:21 +02:00
Gabriele Mazzotta
d24d81444f Bluetooth: Skip the shutdown routine if the interface is not up
Most likely, the shutdown routine requires the interface to be up.
This is the case for BTUSB_INTEL: the routine tries to send a command
to the interface, but since this one is down, it fails and exits once
HCI_INIT_TIMEOUT has expired.

Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Cc: stable@vger.kernel.org # 4.0.x
2015-04-30 18:45:27 +02:00
Linus Torvalds
9dbbe3cfc3 Remove from guest code the handling of task migration during a
pvclock read; instead use the correct protocol in KVM.
 
 This removes the need for task migration notifiers in core
 scheduler code.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm changes from Paolo Bonzini:
 "Remove from guest code the handling of task migration during a pvclock
  read; instead use the correct protocol in KVM.

  This removes the need for task migration notifiers in core scheduler
  code"

[ The scheduler people really hated the migration notifiers, so this was
  kind of required  - Linus ]

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  x86: pvclock: Really remove the sched notifier for cross-cpu migrations
  kvm: x86: fix kvmclock update protocol
2015-04-30 09:44:04 -07:00
Linus Torvalds
fb45f493c1 Fix 2 bugs in the request-based DM blk-mq support that was added during
the 4.1 merge.
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Merge tag 'dm-4.1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper bugfixes from Mike Snitzer:
 "Fix two bugs in the request-based DM blk-mq support that was added
  during the 4.1 merge"

* tag 'dm-4.1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm: fix free_rq_clone() NULL pointer when requeueing unmapped request
  dm: only initialize the request_queue once
2015-04-30 09:39:52 -07:00
David Howells
9c4249c8e0 modsign: change default key details
Change default key details to be more obviously unspecified.

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <james.l.morris@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-30 09:35:41 -07:00
Linus Torvalds
9263a06a58 TTY/Serial fixes for 4.1-rc2
Here are some small tty/serial driver fixes for 4.1-rc2.
 
 They include some minor fixes that resolve reported issues, and a new
 device quirk.
 
 All have been in linux-next succesfully.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg KH:
 "Here are some small tty/serial driver fixes for 4.1-rc2.

  They include some minor fixes that resolve reported issues, and a new
  device quirk.

  All have been in linux-next succesfully"

* tag 'tty-4.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  serial: 8250_pci: Add support for 16 port Exar boards
  serial: samsung: fix serial console break
  tty/serial: at91: maxburst was missing for dma transfers
  serial: of-serial: Remove device_type = "serial" registration
  serial: xilinx: Use platform_get_irq to get irq description structure
  serial: core: Fix kernel-doc build warnings
  tty: Re-add external interface for tty_set_termios()
2015-04-30 09:30:07 -07:00
Linus Torvalds
dcca8de0aa USB fixes for 4.2-rc1
Here are a number of small USB fixes for 4.2-rc2.  They revert one
 problem patch, fix some minor things, and add some new quirks for
 "broken" devices.
 
 All have been in linux-next successfully.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of small USB fixes for 4.2-rc2.  They revert one
  problem patch, fix some minor things, and add some new quirks for
  "broken" devices.

  All have been in linux-next successfully"

* tag 'usb-4.1-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  cdc-acm: prevent infinite loop when parsing CDC headers.
  Revert "usb: host: ehci-msm: Use devm_ioremap_resource instead of devm_ioremap"
  usb: chipidea: otg: remove mutex unlock and lock while stop and start role
  uas: Set max_sectors_240 quirk for ASM1053 devices
  uas: Add US_FL_MAX_SECTORS_240 flag
  uas: Allow uas_use_uas_driver to return usb-storage flags
2015-04-30 09:08:53 -07:00
Linus Torvalds
73be174cf5 SH Drivers Updates for v4.1
* Remove test for now unsupported sh7372 SoC
 * Disable PM runtime for multi-platform r8a73a4 and sh73a0 SoCs with genpd
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Merge tag 'renesas-sh-drivers-for-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas

Pull SH driver updates from Simon Horman:

 - remove test for now unsupported sh7372 SoC

 - disable PM runtime for multi-platform r8a73a4 and sh73a0 SoCs with
   genpd

* tag 'renesas-sh-drivers-for-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
  drivers: sh: Remove test for now unsupported sh7372
  drivers: sh: Disable PM runtime for multi-platform r8a73a4 with genpd
  drivers: sh: Disable PM runtime for multi-platform sh73a0 with genpd
2015-04-30 09:07:26 -07:00
Thomas Gleixner
d8818257d3 power: reset: ltc2952: Remove bogus hrtimer_start() return value checks
The return value of hrtimer_start() tells whether the timer was
inactive or active already when hrtimer_start() was called.

The code emits a bogus warning if the timer was active already
claiming that the timer could not be started.

Remove it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Reichel <sre@kernel.org>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Frans Klaver <frans.klaver@xsens.com>
Cc: "René Moll" <linux@r-moll.nl>
Cc: Wolfram Sang <wsa@the-dreams.de>
Cc: linux-pm@vger.kernel.org
Acked-by: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-04-30 17:47:17 +02:00
Dmitry Eremin-Solenikov
ce992369cf power_supply: fix oops in collie_battery driver
Fix an oops happening due to typo in 297d716f62
[power_supply: Change ownership from driver to core].

Unable to handle kernel NULL pointer dereference at virtual address 00000050
pgd = c0004000
[00000050] *pgd=00000000
Internal error: Oops: 17 [#1] ARM
Modules linked in:
CPU: 0 PID: 1 Comm: swapper Not tainted 4.1.0-rc1+ #35
Hardware name: Sharp-Collie
task: c381a720 ti: c381e000 task.ti: c381e000
PC is at collie_bat_get_property+0x10/0x258
LR is at collie_bat_get_property+0x10/0x258
pc : [<c0235d28>]    lr : [<c0235d28>]    psr: 20000013
sp : c381fd60  ip : 00000001  fp : 00000000
r10: c37b84c0  r9 : c068c9b8  r8 : c37b84a0
r7 : c37b84c0  r6 : c381fd84  r5 : 00000000  r4 : 00000000
r3 : c0369380  r2 : c381fd84  r1 : 00000000  r0 : 00000000
Flags: nzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
Control: 0000717f  Table: c3784000  DAC: 00000017
Process swapper (pid: 1, stack limit = 0xc381e190)
Stack: (0xc381fd60 to 0xc3820000)
fd60: c0369380 00000000 c37c0000 c068c9b8 c37b84c0 c0234380 00000000 c0234bc0
fd80: c042fcec c37b84a0 c0357c64 00000000 c37b84c0 c37c0000 c37b84a0 c0234e98
fda0: c37be020 00000000 ff0a0004 c37b84c8 c37be020 c37b84c0 c042fcec c383dbc0
fdc0: c0364060 00000000 00000000 c01be6a8 00000000 c015b220 c37b84c8 c381fdf0
fde0: c37b84c8 c37b84c8 c37b84c8 c37be020 c041e278 c015b478 c04a45b4 c0045290
fe00: c381a720 c0345d50 00000001 c37bf020 c0e511d8 c00453c0 c0688058 c37b84c8
fe20: 00000000 c37b84c0 c37780c0 c0e511d8 c38e2f60 c0e52d24 c04a45b4 c01be134
fe40: c37b8550 c37b8550 00000000 c0347a8c c37b84a0 00000000 c37b84c0 c0369380
fe60: c37780c0 00000001 00000061 c02347a0 00000001 c0e52e6c c068d144 c37b77a0
fe80: 00000000 c068d164 00000000 c0235b3c 00000000 c067fbb4 00000000 c068d1e4
fea0: 00000000 00000000 00000000 00000000 00000000 00000000 c37b77a0 c068d144
fec0: c3778020 c06953c0 c049de68 c01d5f54 c0688800 c3778020 c068d144 c0688700
fee0: c06953c0 c01d6000 c0675b80 c0675b80 c37b77a0 c0009624 c381a720 c000d8dc
ff00: 00000001 c381ff54 c048a500 c00453c0 c00095a0 20000153 ffffffff c000d8dc
ff20: c049cbd0 00000001 c04aa064 00000007 c04a9fb0 00000006 c06953c0 c06953c0
ff40: c048a590 c04a45c0 c04a9ffc 00000006 c06953c0 c06953c0 c048a590 c04a45c0
ff60: 00000061 c048adf8 00000006 00000006 c048a590 c0036450 00000001 00000000
ff80: c00363ec 00000000 c033ee7c 00000000 00000000 00000000 00000000 00000000
ffa0: 00000000 c033ee84 00000000 c000a3c8 00000000 00000000 00000000 00000000
ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[<c0235d28>] (collie_bat_get_property) from [<c0234380>] (power_supply_get_property+0x1c/0x28)
[<c0234380>] (power_supply_get_property) from [<c0234bc0>] (power_supply_show_property+0x50/0x1dc)
[<c0234bc0>] (power_supply_show_property) from [<c0234e98>] (power_supply_uevent+0x9c/0x1cc)
[<c0234e98>] (power_supply_uevent) from [<c01be6a8>] (dev_uevent+0xb4/0x1d0)
[<c01be6a8>] (dev_uevent) from [<c015b478>] (kobject_uevent_env+0x1cc/0x4f8)
[<c015b478>] (kobject_uevent_env) from [<c01be134>] (device_add+0x374/0x524)
[<c01be134>] (device_add) from [<c02347a0>] (__power_supply_register+0x120/0x180)
[<c02347a0>] (__power_supply_register) from [<c0235b3c>] (collie_bat_probe+0xe8/0x1b4)
[<c0235b3c>] (collie_bat_probe) from [<c01d5f54>] (ucb1x00_add_dev+0x30/0x88)
[<c01d5f54>] (ucb1x00_add_dev) from [<c01d6000>] (ucb1x00_register_driver+0x54/0x78)
[<c01d6000>] (ucb1x00_register_driver) from [<c0009624>] (do_one_initcall+0x84/0x1f4)
[<c0009624>] (do_one_initcall) from [<c048adf8>] (kernel_init_freeable+0xf8/0x1b4)
[<c048adf8>] (kernel_init_freeable) from [<c033ee84>] (kernel_init+0x8/0xec)
[<c033ee84>] (kernel_init) from [<c000a3c8>] (ret_from_fork+0x14/0x2c)
Code: e92d40f8 e1a05001 e1a06002 ebfff9bc (e5903050)
---[ end trace 447ee06b251d66b2 ]---

Fixes: 297d716f62 ("power_supply: Change ownership from driver to core")
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-04-30 17:39:40 +02:00
Wei Yongjun
932df43005 power/reset: at91: fix return value check in at91_reset_platform_probe()
In case of error, the function devm_ioremap() returns NULL
not ERR_PTR(). The IS_ERR() test in the return value check
should be replaced with NULL test.

Fixes: ecfe64d8c5 ("power: reset: Add AT91 reset driver")
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-04-30 17:33:52 +02:00
Pali Rohár
2a6afddb66 MAINTAINERS: Add me as maintainer of Nokia N900 power supply drivers
I'm author of two of those drivers (bq2415x and rx51) and I added
more patches for other twos. Also I fished (proper) open source
power management software for Nokia N900 and those kernel drivers
are part of it.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-04-30 17:26:15 +02:00
Ramakrishna Pallala
409e718e09 axp288_fuel_gauge: Add original author details
Add the original author details of the axp288_fuel_gauge driver.

Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
Acked-by: Todd Brandt <todd.e.brandt@linux.intel.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
2015-04-30 17:19:55 +02:00
Mike Snitzer
aa6df8dd28 dm: fix free_rq_clone() NULL pointer when requeueing unmapped request
Commit 022333427a ("dm: optimize dm_mq_queue_rq to _not_ use kthread if
using pure blk-mq") mistakenly removed free_rq_clone()'s clone->q check
before testing clone->q->mq_ops.  It was an oversight to discontinue
that check for 1 of the 2 use-cases for free_rq_clone():
1) free_rq_clone() called when an unmapped original request is requeued
2) free_rq_clone() called in the request-based IO completion path

The clone->q check made sense for case #1 but not for #2.  However, we
cannot just reinstate the check as it'd mask a serious bug in the IO
completion case #2 -- no in-flight request should have an uninitialized
request_queue (basic block layer refcounting _should_ ensure this).

The NULL pointer seen for case #1 is detailed here:
https://www.redhat.com/archives/dm-devel/2015-April/msg00160.html

Fix this free_rq_clone() NULL pointer by simply checking if the
mapped_device's type is DM_TYPE_MQ_REQUEST_BASED (clone's queue is
blk-mq) rather than checking clone->q->mq_ops.  This avoids the need to
dereference clone->q, but a WARN_ON_ONCE is added to let us know if an
uninitialized clone request is being completed.

Reported-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2015-04-30 10:25:21 -04:00
Christoph Hellwig
3e6180f0c8 dm: only initialize the request_queue once
Commit bfebd1cdb4 ("dm: add full blk-mq support to request-based DM")
didn't properly account for the need to short-circuit re-initializing
DM's blk-mq request_queue if it was already initialized.

Otherwise, reloading a blk-mq request-based DM table (either manually
or via multipathd) resulted in errors, see:
 https://www.redhat.com/archives/dm-devel/2015-April/msg00132.html

Fix is to only initialize the request_queue on the initial table load
(when the mapped_device type is assigned).

This is better than having dm_init_request_based_blk_mq_queue() return
early if the queue was already initialized because it elevates the
constraint to a more meaningful location in DM core.  As such the
pre-existing early return in dm_init_request_based_queue() can now be
removed.

Fixes: bfebd1cdb4 ("dm: add full blk-mq support to request-based DM")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2015-04-30 10:25:21 -04:00
Michael Holzheu
b9b4b1cef1 s390/bpf: Fix gcov stack space problem
When compiling the kernel for GCOV (CONFIG_GCOV_KERNEL,-fprofile-arcs),
gcc allocates a lot of stack space because of the large switch statement
in bpf_jit_insn().

This leads to the following compile warning:

 arch/s390/net/bpf_jit_comp.c: In function 'bpf_jit_prog':
 arch/s390/net/bpf_jit_comp.c:1144:1: warning: frame size of
  function 'bpf_jit_prog' is 12592 bytes which is more than
  half the stack size. The dynamic check would not be reliable.
  No check emitted for this function.

 arch/s390/net/bpf_jit_comp.c:1144:1: warning: the frame size of 12504
  bytes is larger than 1024 bytes [-Wframe-larger-than=]

And indead gcc allocates 12592 bytes of stack space:

 # objdump -d arch/s390/net/bpf_jit_comp.o
 ...
 0000000000000c60 <bpf_jit_prog>:
     c60:       eb 6f f0 48 00 24       stmg    %r6,%r15,72(%r15)
     c66:       b9 04 00 ef             lgr     %r14,%r15
     c6a:       e3 f0 fe d0 fc 71       lay     %r15,-12592(%r15)

As a workaround of that problem we now define bpf_jit_insn() as
noinline which then reduces the stack space.

 # objdump -d arch/s390/net/bpf_jit_comp.o
 ...
 0000000000000070 <bpf_jit_insn>:
      70:       eb 6f f0 48 00 24       stmg    %r6,%r15,72(%r15)
      76:       c0 d0 00 00 00 00       larl    %r13,76 <bpf_jit_insn+0x6>
      7c:       a7 f1 3f 80             tmll    %r15,16256
      80:       b9 04 00 ef             lgr     %r14,%r15
      84:       e3 f0 ff a0 ff 71       lay     %r15,-96(%r15)

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-30 13:50:36 +02:00
Ingo Tuchscherer
8cc2af7c53 s390/zcrypt: fixed ap poll timer behavior
The ap poll timer restart condition was wrong. Hence the poll timer
was not restarted reliable when setting a new time interval via the
poll_timeout sysfs attribute.
Added missing timer locking.

Reported-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Tuchscherer <ingo.tuchscherer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-30 13:50:35 +02:00
Michael Holzheu
771aada9ac s390/bpf: Adjust ALU64_DIV/MOD to match interpreter change
The s390x ALU64_DIV/MOD has been implemented according to the eBPF
interpreter specification that used do_div(). This function does a 64-bit
by 32-bit divide. It turned out that this was wrong and now the interpreter
uses div64_u64_rem() for full 64-bit division.

So fix this and use full 64-bit division in the s390x eBPF backend code.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-30 13:50:34 +02:00
Suzuki K. Poulose
8291fd04d8 arm64: perf: Fix the pmu node name in warning message
With commit d5efd9cc9c ("arm64: pmu: add support for interrupt-affinity
property"), we print a warning when we find a PMU SPI with a missing
missing interrupt-affinity property in a pmu node. Unfortunately, we
pass the wrong (NULL) device node to of_node_full_name, resulting in
unhelpful messages such as:

 hw perfevents: Failed to parse <no-node>/interrupt-affinity[0]

This patch fixes the name to that of the pmu node.

Fixes: d5efd9cc9c (arm64: pmu: add support for interrupt-affinity property)
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K. Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-04-30 12:11:30 +01:00
Will Deacon
d795ef9aa8 arm64: perf: don't warn about missing interrupt-affinity property for PPIs
PPIs are affine by nature, so the interrupt-affinity property is not
used and therefore we shouldn't print a warning in its absence.

Reported-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
2015-04-30 12:11:23 +01:00
Michael Ellerman
68fc378ce3 Revert "powerpc/tm: Abort syscalls in active transactions"
This reverts commit feba40362b.

Although the principle of this change is good, the implementation has a
few issues.

Firstly we can sometimes fail to abort a syscall because r12 may have
been clobbered by C code if we went down the virtual CPU accounting
path, or if syscall tracing was enabled.

Secondly we have decided that it is safer to abort the syscall even
earlier in the syscall entry path, so that we avoid the syscall tracing
path when we are transactional.

So that we have time to thoroughly test those changes we have decided to
revert this for this merge window and will merge the fixed version in
the next window.

NB. Rather than reverting the selftest we just drop tm-syscall from
TEST_PROGS so that it's not run by default.

Fixes: feba40362b ("powerpc/tm: Abort syscalls in active transactions")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-04-30 15:24:58 +10:00
Dave Airlie
feb589e986 Merge branch 'drm-fixes-4.1' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Fixes for 4.1 for radeon all destined for stable:
- fix fallout from the audio rework
- VM fixes
- other assorted bug fixes

* 'drm-fixes-4.1' of git://people.freedesktop.org/~agd5f/linux:
  drm/radeon: fix userptr return value checking (v2)
  drm/radeon: check new address before removing old one
  drm/radeon: reset BOs address after clearing it.
  drm/radeon: fix lockup when BOs aren't part of the VM on release
  drm/radeon: add SI DPM quirk for Sapphire R9 270 Dual-X 2G GDDR5
  drm/radeon: adjust pll when audio is not enabled
  drm/radeon: only enable audio streams if the monitor supports it
  drm/radeon: only mark audio as connected if the monitor supports it (v3)
  drm/radeon/audio: don't enable packets until the end
  drm/radeon: drop dce6_dp_enable
  drm/radeon: fix ordering of AVI packet setup
  drm/radeon: Use drm_calloc_ab for CS relocs
2015-04-30 12:15:34 +10:00
Dan Carpenter
c57ddfaea6 Bluetooth: btusb: off by one in rtl8723b_parse_firmware()
The ">" should be ">=" so that we don't read past the end of the array.

Fixes: 9d9a113e3695 ('Bluetooth: btusb: Add Realtek 8723A/8723B/8761A/8821A support')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 01:05:30 +02:00
Marcel Holtmann
eb50042fd2 Bluetooth: btusb: Fix two coding style issues
ERROR: spaces required around that '<' (ctx:WxV)
+		if (err <0)
 		        ^

ERROR: code indent should use tabs where possible
+^I^I^I^I        sizeof(ver));$

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-04-30 01:05:30 +02:00
Daniel Drake
a2698a9bf9 Bluetooth: btusb: Add Realtek 8723A/8723B/8761A/8821A support
Realtek ship a variety of bluetooth USB devices that identify
themselves with standard USB Bluetooth device class values, but
require a special driver to actually work. Without that driver,
you never get any scan results.

More recently however, Realtek appear to have wisened up and simply
posted a firmware update that makes these devices comply with
normal btusb protocols. The firmware needs to be uploaded on each boot.

Based on Realtek code from https://github.com/lwfinger/rtl8723au_bt
('new' branch).

This enables bluetooth support in the Gigabyte Brix GB-BXBT-2807 which
has this RTL8723BE USB device:

T:  Bus=01 Lev=01 Prnt=01 Port=01 Cnt=02 Dev#=  3 Spd=12   MxCh= 0
D:  Ver= 2.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=13d3 ProdID=3410 Rev= 2.00
S:  Manufacturer=Realtek
S:  Product=Bluetooth Radio
S:  SerialNumber=00e04c000001
C:* #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=81(I) Atr=03(Int.) MxPS=  16 Ivl=1ms
E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
E:  Ad=82(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=   0 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=   0 Ivl=1ms
I:  If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=   9 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=   9 Ivl=1ms
I:  If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  17 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  17 Ivl=1ms
I:  If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  25 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  25 Ivl=1ms
I:  If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  33 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  33 Ivl=1ms
I:  If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E:  Ad=03(O) Atr=01(Isoc) MxPS=  49 Ivl=1ms
E:  Ad=83(I) Atr=01(Isoc) MxPS=  49 Ivl=1ms

There is no change to the USB descriptor after firmware update,
however the version read by HCI_OP_READ_LOCAL_VERSION changes from
0x8723 to 0x3083.

This has also been tested on RTL8723AE and RTL8821AE. Support for
RTL8761A has also been added, but that is untested.

Signed-off-by: Daniel Drake <drake@endlessm.com>
Tested-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 01:05:30 +02:00
Marcel Holtmann
4c876c0edb Bluetooth: hci_uart: Add Atheros support for address configuration
The Atheros support for missing the support for configuration of the
Bluetooth public address. Add support for the vendor specific command.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-04-30 01:05:29 +02:00
Marcel Holtmann
c0ba7acd48 Bluetooth: hci_uart: Reorder Atheros specific driver callbacks
The driver callbacks in the Atheros support were all in a random order
and did not help readability of this driver. So reorder them to make
them aligned with what other Bluetooth UART drivers do. This patch is
not changing any actual code.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-04-30 01:05:29 +02:00
Marcel Holtmann
50862ee557 Bluetooth: btbcm: Export patchram download as separate function
This isolates the Broadcom patchram download procedure as separate
function so that it can be easily used from USB and UART based drivers.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
2015-04-30 01:05:29 +02:00
DingXiang
16e5c47a0f Bluetooth: bt3c: Delete some unuseful comments
I think the comments are used to debug, and we don't need them in
mainline code

Signed-off-by: DingXiang <dingxiang@huawei.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2015-04-30 01:05:29 +02:00
Johan Hovold
483d821108 gpio: sysfs: fix memory leaks and device hotplug
Unregister GPIOs requested through sysfs at chip remove to avoid leaking
the associated memory and sysfs entries.

The stale sysfs entries prevented the gpio numbers from being exported
when the gpio range was later reused (e.g. at device reconnect).

This also fixes the related module-reference leak.

Note that kernfs makes sure that any on-going sysfs operations finish
before the class devices are unregistered and that further accesses
fail.

The chip exported flag is used to prevent gpiod exports during removal.
This also makes it harder to trigger, but does not fix, the related race
between gpiochip_remove and export_store, which is really a race with
gpiod_request that needs to be addressed separately.

Also note that this would prevent the crashes (e.g. NULL-dereferences)
at reconnect that affects pre-3.18 kernels, as well as use-after-free on
operations on open attribute files on pre-3.14 kernels (prior to
kernfs).

Fixes: d8f388d8dc ("gpio: sysfs interface")
Cc: stable <stable@vger.kernel.org>	# v2.6.27: 01cca93a94
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2015-04-29 23:42:47 +02:00
Yuchung Cheng
9dac883544 tcp: update reordering first before detecting loss
tcp_mark_lost_retrans is not used when FACK is disabled. Since
tcp_update_reordering may disable FACK, it should be called first
before tcp_mark_lost_retrans.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: Nandita Dukkipati <nanditad@google.com>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-29 17:10:38 -04:00
Eric Dumazet
6e9250f59e tcp: add TCP_CC_INFO socket option
Some Congestion Control modules can provide per flow information,
but current way to get this information is to use netlink.

Like TCP_INFO, let's add TCP_CC_INFO so that applications can
issue a getsockopt() if they have a socket file descriptor,
instead of playing complex netlink games.

Sample usage would be :

  union tcp_cc_info info;
  socklen_t len = sizeof(info);

  if (getsockopt(fd, SOL_TCP, TCP_CC_INFO, &info, &len) == -1)

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-29 17:10:38 -04:00
Eric Dumazet
64f40ff5bb tcp: prepare CC get_info() access from getsockopt()
We would like that optional info provided by Congestion Control
modules using netlink can also be read using getsockopt()

This patch changes get_info() to put this information in a buffer,
instead of skb, like tcp_get_info(), so that following patch
can reuse this common infrastructure.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Yuchung Cheng <ycheng@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-29 17:10:38 -04:00