Commit Graph

634605 Commits

Author SHA1 Message Date
Olof Johansson
52cad4b54d Fixes for omaps for v4.9-rc cycle. Except for the omap3 fix for the SoC
features printed, all these are quite trivial and tiny. The omap5 jack
 detection and gpadc patches are not strictly fixes, but I wanted to get
 binding document typo fixed before it pops up on other boards. The
 gpadc one liner was in the same series and I applied and pushed it out
 already before noticing it could have waited. The list of changes is:
 
 - Fix omap3 SoC features printed
 
 - Make sure OMAP_INTERCONNECT is selected for am43xx only configurations
 
 - Add missing memory node for torpedo
 
 - Initialize uart4_mask properly to avoid writing garbage to PRM registers
 
 - Fix NULL pointer dereference for omap4 volt_data
 
 - Add alias for omap5 gpadc needed by iio drivers
 
 - Enable omap5 jack headset jack detection and fix it's binding typo
 
 - Add missing memory node for logicpd-som-lv
 
 - Fix wrong SMPS6 voltage for VDD-DDR3 for omap5
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Merge tag 'omap-for-v4.9/fixes-for-rc-cycle' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes

Fixes for omaps for v4.9-rc cycle. Except for the omap3 fix for the SoC
features printed, all these are quite trivial and tiny. The omap5 jack
detection and gpadc patches are not strictly fixes, but I wanted to get
binding document typo fixed before it pops up on other boards. The
gpadc one liner was in the same series and I applied and pushed it out
already before noticing it could have waited. The list of changes is:

- Fix omap3 SoC features printed
- Make sure OMAP_INTERCONNECT is selected for am43xx only configurations
- Add missing memory node for torpedo
- Initialize uart4_mask properly to avoid writing garbage to PRM registers
- Fix NULL pointer dereference for omap4 volt_data
- Add alias for omap5 gpadc needed by iio drivers
- Enable omap5 jack headset jack detection and fix it's binding typo
- Add missing memory node for logicpd-som-lv
- Fix wrong SMPS6 voltage for VDD-DDR3 for omap5

* tag 'omap-for-v4.9/fixes-for-rc-cycle' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: omap5: board-common: fix wrong SMPS6 (VDD-DDR3) voltage
  ARM: omap3: Add missing memory node in SOM-LV
  ASoC: omap-abe-twl6040: fix typo in bindings documentation
  dts: omap5: board-common: enable twl6040 headset jack detection
  dts: omap5: board-common: add phandle to reference Palmas gpadc
  ARM: OMAP2+: avoid NULL pointer dereference
  ARM: OMAP2+: PRM: initialize en_uart4_mask and grpsel_uart4_mask
  ARM: dts: omap3: Fix memory node in Torpedo board
  ARM: AM43XX: Select OMAP_INTERCONNECT in Kconfig
  ARM: OMAP3: Fix formatting of features printed

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-11-17 16:37:04 -08:00
Olof Johansson
fbcdf6877e mvebu fixes for 4.9 (part 1)
All of them are fixes for arm64 device tree
 
 - 2 for the SPI node on the Armada 7K/8K
 - 1 for the clock node on the Armada 37xx
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Merge tag 'mvebu-fixes-4.9-1' of git://git.infradead.org/linux-mvebu into fixes

mvebu fixes for 4.9 (part 1)

All of them are fixes for arm64 device tree

- 2 for the SPI node on the Armada 7K/8K
- 1 for the clock node on the Armada 37xx

* tag 'mvebu-fixes-4.9-1' of git://git.infradead.org/linux-mvebu:
  arm64: dts: marvell: add unique identifiers for Armada A8k SPI controllers
  arm64: dts: marvell: fix clocksource for CP110 slave SPI0
  arm64: dts: marvell: Fix typo in label name on Armada 37xx

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-11-17 16:33:39 -08:00
Cédric Le Goater
1c8018f7a7 ipmi/bt-bmc: change compatible node to 'aspeed, ast2400-ibt-bmc'
The Aspeed SoCs have two BT interfaces : one is IPMI compliant and the
other is H8S/2168 compliant.

The current ipmi/bt-bmc driver implements the IPMI version and we
should reflect its nature in the compatible node name using
'aspeed,ast2400-ibt-bmc' instead of 'aspeed,ast2400-bt-bmc'. The
latter should be used for a H8S interface driver if it is implemented
one day.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
2016-11-17 16:31:09 -08:00
H. Nikolaus Schaller
1bc2f5fac3 ARM: dts: omap5: board-common: fix wrong SMPS6 (VDD-DDR3) voltage
DDR3L is usually specified as

	JEDEC standard 1.35V(1.28V~1.45V) & 1.5V(1.425V~1.575V)

Therefore setting smps6 regulator to 1.2V is definitively below
minimum. It appears that real world chips are more forgiving than
data sheets indicate, but let's set the regulator right.

Note: a board that uses other voltages (DDR with 1.5V) can
overwrite by referencing &smps6_reg.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2016-11-14 13:03:21 -08:00
Linus Torvalds
a25f0944ba Linux 4.9-rc5 2016-11-13 10:32:32 -08:00
Linus Torvalds
e234832afb ARM fixes. There are a couple pending x86 patches but they'll have to
wait for next week.
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "ARM fixes.  There are a couple pending x86 patches but they'll have to
  wait for next week"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: arm/arm64: vgic: Kick VCPUs when queueing already pending IRQs
  KVM: arm/arm64: vgic: Prevent access to invalid SPIs
  arm/arm64: KVM: Perform local TLB invalidation when multiplexing vcpus on a single CPU
2016-11-13 10:28:53 -08:00
Linus Torvalds
e861d890c0 Merge branch 'media-fixes' (patches from Mauro)
Merge media fixes from Mauro Carvalho Chehab:
 "This contains two patches fixing problems with my patch series meant
  to make USB drivers to work again after the DMA on stack changes.

  The last patch on this series is actually not related to DMA on stack.
  It solves a longstanding bug affecting module unload, causing
  module_put() to be called twice. It was reported by the user who
  reported and tested the issues with the gp8psk driver with the DMA
  fixup patches. As we're late at -rc cycle, maybe you prefer to not
  apply it right now. If this is the case, I'll add to the pile of
  patches for 4.10.

  Exceptionally this time, I'm sending the patches via e-mail, because
  I'm on another trip, and won't be able to use the usual procedure
  until Monday. Also, it is only three patches, and you followed already
  the discussions about the first one"

* emailed patches from Mauro Carvalho Chehab <mchehab@osg.samsung.com>:
  gp8psk: Fix DVB frontend attach
  gp8psk: fix gp8psk_usb_in_op() logic
  dvb-usb: move data_mutex to struct dvb_usb_device
2016-11-13 10:26:05 -08:00
Linus Torvalds
acb57b7548 char/misc fixes for 4.9-rc5
Here are three small driver fixes for some reported issues for 4.9-rc5.
 One for the hyper-v subsystem, fixing up a naming issue that showed up
 in 4.9-rc1, one mei driver fix, and one fix for parallel ports,
 resolving a reported regression.
 
 All have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc fixes from Greg KH:
 "Here are three small driver fixes for some reported issues for
  4.9-rc5.

  One for the hyper-v subsystem, fixing up a naming issue that showed up
  in 4.9-rc1, one mei driver fix, and one fix for parallel ports,
  resolving a reported regression.

  All have been in linux-next with no reported issues"

* tag 'char-misc-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  ppdev: fix double-free of pp->pdev->name
  vmbus: make sysfs names consistent with PCI
  mei: bus: fix received data size check in NFC fixup
2016-11-13 10:24:08 -08:00
Linus Torvalds
cf2b191cba driver core fixes for 4.9-rc5
Here are two driver core fixes for 4.9-rc5.
 
 The first resolves an issue with some drivers not liking to be unbound
 and bound again (if CONFIG_DEBUG_TEST_DRIVER_REMOVE is enabled), which
 solves some reported problems with graphics and storage drivers.  The
 other resolves a smatch error with the 4.9-rc1 driver core changes
 around this feature.
 
 Both have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fixes from Greg KH:
 "Here are two driver core fixes for 4.9-rc5.

  The first resolves an issue with some drivers not liking to be unbound
  and bound again (if CONFIG_DEBUG_TEST_DRIVER_REMOVE is enabled), which
  solves some reported problems with graphics and storage drivers. The
  other resolves a smatch error with the 4.9-rc1 driver core changes
  around this feature.

  Both have been in linux-next with no reported issues"

* tag 'driver-core-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  driver core: fix smatch warning on dev->bus check
  driver core: skip removal test for non-removable drivers
2016-11-13 10:22:07 -08:00
Linus Torvalds
85b9df7aa5 Staging/IIO fixes for 4.9-rc5
Here are a few small staging and iio driver fixes for reported issues.
 The last one was cherry-picked from my -next branch to resolve a build
 warning that Arnd fixed, in his quest to be able to turn
 -Wmaybe-uninitialized back on again.  That patch, and all of the others,
 have been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging/IIO fixes from Grek KH:
 "Here are a few small staging and iio driver fixes for reported issues.

  The last one was cherry-picked from my -next branch to resolve a build
  warning that Arnd fixed, in his quest to be able to turn
  -Wmaybe-uninitialized back on again. That patch, and all of the
  others, have been in linux-next for a while with no reported issues"

* tag 'staging-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  iio: maxim_thermocouple: detect invalid storage size in read()
  staging: nvec: remove managed resource from PS2 driver
  Revert "staging: nvec: ps2: change serio type to passthrough"
  drivers: staging: nvec: remove bogus reset command for PS/2 interface
  staging: greybus: arche-platform: fix device reference leak
  staging: comedi: ni_tio: fix buggy ni_tio_clock_period_ps() return value
  staging: sm750fb: Fix bugs introduced by early commits
  iio: hid-sensors: Increase the precision of scale to fix wrong reading interpretation.
  iio: orientation: hid-sensor-rotation: Add PM function (fix non working driver)
  iio: st_sensors: fix scale configuration for h3lis331dl
  staging: iio: ad5933: avoid uninitialized variable in error case
2016-11-13 10:13:33 -08:00
Linus Torvalds
befdfffdbd USB / PHY fixes for 4.9-rc5
Here are a number of small USB and PHY driver fixes for 4.9-rc5
 
 Nothing major, just small fixes for reported issues, all of these have
 been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB / PHY fixes from Greg KH:
 "Here are a number of small USB and PHY driver fixes for 4.9-rc5

  Nothing major, just small fixes for reported issues, all of these have
  been in linux-next for a while with no reported issues"

* tag 'usb-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  USB: cdc-acm: fix TIOCMIWAIT
  cdc-acm: fix uninitialized variable
  drivers/usb: Skip auto handoff for TI and RENESAS usb controllers
  usb: musb: remove duplicated actions
  usb: musb: da8xx: Don't print phy error on -EPROBE_DEFER
  phy: sun4i: check PMU presence when poking unknown bit of pmu
  phy-rockchip-pcie: remove deassert of phy_rst from exit callback
  phy: da8xx-usb: rename the ohci device to ohci-da8xx
  phy: Add reset callback for not generic phy
  uwb: fix device reference leaks
  usb: gadget: u_ether: remove interrupt throttling
  usb: dwc3: st: add missing <linux/pinctrl/consumer.h> include
  usb: dwc3: Fix error handling for core init
2016-11-13 10:10:46 -08:00
Linus Torvalds
348ce85b0a Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull more block fixes from Jens Axboe:
 "Since I mistakenly left out the lightnvm regression fix yesterday and
  the aoeblk seems adequately tested at this point, might as well send
  out another pull to make -rc5"

* 'for-linus' of git://git.kernel.dk/linux-block:
  aoe: fix crash in page count manipulation
  lightnvm: invalid offset calculation for lba_shift
2016-11-13 10:09:04 -08:00
Linus Torvalds
980221d14c SCSI fixes on 20161111
The megaraid_sas patch in here fixes a major regression in the last
 fix set that made all megaraid_sas cards unusable.  It turns out
 no-one had actually tested such an "obvious" fix, sigh.  The fix for
 the fix has been tested ...
 
 The next most serious is the vmw_pvscsi abort problem which basically
 means that aborts don't work on the vmware paravirt devices and error
 handling always escalates to reset.
 
 The rest are an assortment of missed reference counting in certain
 paths and corner case bugs that show up on some architectures.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "The megaraid_sas patch in here fixes a major regression in the last
  fix set that made all megaraid_sas cards unusable. It turns out no-one
  had actually tested such an "obvious" fix, sigh. The fix for the fix
  has been tested ...

  The next most serious is the vmw_pvscsi abort problem which basically
  means that aborts don't work on the vmware paravirt devices and error
  handling always escalates to reset.

  The rest are an assortment of missed reference counting in certain
  paths and corner case bugs that show up on some architectures"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: megaraid_sas: fix macro MEGASAS_IS_LOGICAL to avoid regression
  scsi: qla2xxx: fix invalid DMA access after command aborts in PCI device remove
  scsi: qla2xxx: do not queue commands when unloading
  scsi: libcxgbi: fix incorrect DDP resource cleanup
  scsi: qla2xxx: Fix scsi scan hang triggered if adapter fails during init
  scsi: scsi_dh_alua: Fix a reference counting bug
  scsi: vmw_pvscsi: return SUCCESS for successful command aborts
  scsi: mpt3sas: Fix for block device of raid exists even after deleting raid disk
  scsi: scsi_dh_alua: fix missing kref_put() in alua_rtpg_work()
2016-11-13 10:07:08 -08:00
Linus Torvalds
d41bd8f335 The typical collection of minor bug fixes in clk drivers. We don't have
anything in the core framework here, just driver fixes. There's a boot fix for
 Samsung devices and a safety measure for qoriq to prevent CPUs from running too
 fast. There's also a fix for i.MX6Q to properly handle audio clock rates. We
 also have some "that's obviously wrong" fixes like bad NULL pointer checks in
 the MPP driver and a poor usage of __pa in the xgene clk driver that are fixed
 here.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "The typical collection of minor bug fixes in clk drivers. We don't
  have anything in the core framework here, just driver fixes.

  There's a boot fix for Samsung devices and a safety measure for qoriq
  to prevent CPUs from running too fast. There's also a fix for i.MX6Q
  to properly handle audio clock rates. We also have some "that's
  obviously wrong" fixes like bad NULL pointer checks in the MPP driver
  and a poor usage of __pa in the xgene clk driver that are fixed here"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: mmp: pxa910: fix return value check in pxa910_clk_init()
  clk: mmp: pxa168: fix return value check in pxa168_clk_init()
  clk: mmp: mmp2: fix return value check in mmp2_clk_init()
  clk: qoriq: Don't allow CPU clocks higher than starting value
  clk: imx: fix integer overflow in AV PLL round rate
  clk: xgene: Don't call __pa on ioremaped address
  clk/samsung: Use CLK_OF_DECLARE_DRIVER initialization method for CLKOUT
  clk: rockchip: don't return NULL when failing to register ddrclk branch
2016-11-13 10:04:55 -08:00
Mauro Carvalho Chehab
7a0786c19d gp8psk: Fix DVB frontend attach
The DVB binding schema at the DVB core assumes that the frontend is a
separate driver.  Faling to do that causes OOPS when the module is
removed, as it tries to do a symbol_put_addr on an internal symbol,
causing craches like:

    WARNING: CPU: 1 PID: 28102 at kernel/module.c:1108 module_put+0x57/0x70
    Modules linked in: dvb_usb_gp8psk(-) dvb_usb dvb_core nvidia_drm(PO) nvidia_modeset(PO) snd_hda_codec_hdmi snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd soundcore nvidia(PO) [last unloaded: rc_core]
    CPU: 1 PID: 28102 Comm: rmmod Tainted: P        WC O 4.8.4-build.1 #1
    Hardware name: MSI MS-7309/MS-7309, BIOS V1.12 02/23/2009
    Call Trace:
       dump_stack+0x44/0x64
       __warn+0xfa/0x120
       module_put+0x57/0x70
       module_put+0x57/0x70
       warn_slowpath_null+0x23/0x30
       module_put+0x57/0x70
       gp8psk_fe_set_frontend+0x460/0x460 [dvb_usb_gp8psk]
       symbol_put_addr+0x27/0x50
       dvb_usb_adapter_frontend_exit+0x3a/0x70 [dvb_usb]

From Derek's tests:
    "Attach bug is fixed, tuning works, module unloads without
     crashing. Everything seems ok!"

Reported-by: Derek <user.vdr@gmail.com>
Tested-by: Derek <user.vdr@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-13 10:02:22 -08:00
Mauro Carvalho Chehab
1596c387e9 gp8psk: fix gp8psk_usb_in_op() logic
Commit bc29131ecb10 ("[media] gp8psk: don't do DMA on stack") fixed the
usage of DMA on stack, but the memcpy was wrong for gp8psk_usb_in_op().
Fix it.

From Derek's email:
    "Fix confirmed using 2 different Skywalker models with
     HD mpeg4, SD mpeg2."

Suggested-by: Johannes Stezenbach <js@linuxtv.org>
Fixes: bc29131ecb10 ("[media] gp8psk: don't do DMA on stack")
Tested-by: Derek <user.vdr@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-13 10:02:22 -08:00
Mauro Carvalho Chehab
7724325a19 dvb-usb: move data_mutex to struct dvb_usb_device
The data_mutex is initialized too late, as it is needed for
each device driver's power control, causing an OOPS:

    dvb-usb: found a 'TerraTec/qanu USB2.0 Highspeed DVB-T Receiver' in warm state.
    BUG: unable to handle kernel NULL pointer dereference at           (null)
    IP: [<ffffffff846617af>] __mutex_lock_slowpath+0x6f/0x100 PGD 0
    Oops: 0002 [#1] SMP
    Modules linked in: dvb_usb_cinergyT2(+) dvb_usb
    CPU: 0 PID: 2029 Comm: modprobe Not tainted 4.9.0-rc4-dvbmod #24
    Hardware name: FUJITSU LIFEBOOK A544/FJNBB35 , BIOS Version 1.17 05/09/2014
    task: ffff88020e943840 task.stack: ffff8801f36ec000
    RIP: 0010:[<ffffffff846617af>]  [<ffffffff846617af>] __mutex_lock_slowpath+0x6f/0x100
    RSP: 0018:ffff8801f36efb10  EFLAGS: 00010282
    RAX: 0000000000000000 RBX: ffff88021509bdc8 RCX: 00000000c0000100
    RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffff88021509bdcc
    RBP: ffff8801f36efb58 R08: ffff88021f216320 R09: 0000000000100000
    R10: ffff88021f216320 R11: 00000023fee6c5a1 R12: ffff88020e943840
    R13: ffff88021509bdcc R14: 00000000ffffffff R15: ffff88021509bdd0
    FS:  00007f21adb86740(0000) GS:ffff88021f200000(0000) knlGS:0000000000000000
    CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
    CR2: 0000000000000000 CR3: 0000000215bce000 CR4: 00000000001406f0
    Call Trace:
       mutex_lock+0x16/0x25
       cinergyt2_power_ctrl+0x1f/0x60 [dvb_usb_cinergyT2]
       dvb_usb_device_init+0x21e/0x5d0 [dvb_usb]
       cinergyt2_usb_probe+0x21/0x50 [dvb_usb_cinergyT2]
       usb_probe_interface+0xf3/0x2a0
       driver_probe_device+0x208/0x2b0
       __driver_attach+0x87/0x90
       driver_probe_device+0x2b0/0x2b0
       bus_for_each_dev+0x52/0x80
       bus_add_driver+0x1a3/0x220
       driver_register+0x56/0xd0
       usb_register_driver+0x77/0x130
       do_one_initcall+0x46/0x180
       free_vmap_area_noflush+0x38/0x70
       kmem_cache_alloc+0x84/0xc0
       do_init_module+0x50/0x1be
       load_module+0x1d8b/0x2100
       find_symbol_in_section+0xa0/0xa0
       SyS_finit_module+0x89/0x90
       entry_SYSCALL_64_fastpath+0x13/0x94
    Code: e8 a7 1d 00 00 8b 03 83 f8 01 0f 84 97 00 00 00 48 8b 43 10 4c 8d 7b 08 48 89 63 10 4c 89 3c 24 41 be ff ff ff ff 48 89 44 24 08 <48> 89 20 4c 89 64 24 10 eb 1a 49 c7 44 24 08 02 00 00 00 c6 43 RIP  [<ffffffff846617af>] __mutex_lock_slowpath+0x6f/0x100 RSP <ffff8801f36efb10>
    CR2: 0000000000000000

So, move it to the struct dvb_usb_device and initialize it
before calling the driver's callbacks.

Reported-by: Jörg Otte <jrg.otte@gmail.com>
Tested-by: Jörg Otte <jrg.otte@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-13 10:02:22 -08:00
Arnd Bergmann
d70674eeaa iio: maxim_thermocouple: detect invalid storage size in read()
As found by gcc -Wmaybe-uninitialized, having a storage_bytes value other
than 2 or 4 will result in undefined behavior:

drivers/iio/temperature/maxim_thermocouple.c: In function 'maxim_thermocouple_read':
drivers/iio/temperature/maxim_thermocouple.c:141:5: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]

This probably cannot happen, but returning -EINVAL here is appropriate
and makes gcc happy and the code more robust.

Fixes: 231147ee77 ("iio: maxim_thermocouple: Align 16 bit big endian value of raw reads")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
(cherry picked from commit 32cb7d27e6)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-11-13 10:08:32 +01:00
Jens Axboe
0cbc72a178 aoe: fix crash in page count manipulation
aoeblk contains some mysterious code, that wants to elevate the bio
vec page counts while it's under IO. That is not needed, it's
fragile, and it's causing kernel oopses for some.

Reported-by: Tested-by: Don Koch <kochd@us.ibm.com>
Tested-by: Tested-by: Don Koch <kochd@us.ibm.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-12 08:27:07 -07:00
Matias Bjørling
409ae5a76e lightnvm: invalid offset calculation for lba_shift
The ns->lba_shift assumes its value to be the logarithmic of the
LA size. A previous patch duplicated the lba_shift calculation into
lightnvm. It prematurely also subtracted a 512byte shift, which commonly
is applied per-command. The 512byte shift being subtracted twice led to
data loss when restoring the logical to physical mapping table from
device and when issuing I/O commands using rrpc.

Fix offset by removing the 512byte shift subtraction when calculating
lba_shift.

Fixes: b0b4e09c1a "lightnvm: control life of nvm_dev in driver"
Reported-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
2016-11-11 18:27:32 -07:00
Linus Torvalds
86e4ee760e ACPI fix for v4.9-rc5
Fix a recent regression in the 8250_dw serial driver introduced by
 adding a quirk for the APM X-Gene SoC to it which uncovered an issue
 related to the handling of built-in device properties in the core
 ACPI device enumeration code (Heikki Krogerus).
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Merge tag 'acpi-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Fix a recent regression in the 8250_dw serial driver introduced by
  adding a quirk for the APM X-Gene SoC to it which uncovered an issue
  related to the handling of built-in device properties in the core ACPI
  device enumeration code (Heikki Krogerus)"

* tag 'acpi-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / platform: Add support for build-in properties
2016-11-11 17:02:01 -08:00
Linus Torvalds
b9f659b810 Power management fixes for v4.9-rc5
- Prevent the PM core from attempting to suspend parent devices
    if any of their children, whose suspend callbacks were invoked
    asynchronously, have failed to suspend during the "late" and
    "noirq" phases of system-wide suspend of devices (Brian Norris).
 
  - Prevent the boot-time system suspend test code from leaking a
    reference to the RTC device used by it (Johan Hovold).
 
  - Fix cpupower to use the return value of one of its library
    functions correctly and restore the correct behavior of it
    when used for setting cpufreq tunables broken during the 4.7
    development cycle (Laura Abbott).
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Merge tag 'pm-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix two bugs in error code paths in the PM core (system-wide
  suspend of devices), a device reference leak in the boot-time suspend
  test code and a cpupower utility regression from the 4.7 cycle.

  Specifics:

   - Prevent the PM core from attempting to suspend parent devices if
     any of their children, whose suspend callbacks were invoked
     asynchronously, have failed to suspend during the "late" and
     "noirq" phases of system-wide suspend of devices (Brian Norris).

   - Prevent the boot-time system suspend test code from leaking a
     reference to the RTC device used by it (Johan Hovold).

   - Fix cpupower to use the return value of one of its library
     functions correctly and restore the correct behavior of it when
     used for setting cpufreq tunables broken during the 4.7 development
     cycle (Laura Abbott)"

* tag 'pm-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / sleep: don't suspend parent when async child suspend_{noirq, late} fails
  PM / sleep: fix device reference leak in test_suspend
  cpupower: Correct return type of cpu_power_is_cpu_online() in cpufreq-set
2016-11-11 16:54:23 -08:00
Linus Torvalds
e6251f009b ARC fixes for 4.9-rc5
- mmap handler for dma ops as generic handler no longer works for us [Alexey]
 
  - Fixes for EZChip platform [Noam]
 
  - Fix RTC clocksource driver build issue
 
  - ARC IRQ handling fixes [Yuriy]
 
  - Revert a recent makefile change which doesn't go well with oldish tools out in   the wild
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Merge tag 'arc-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC fixes from Vineet Gupta:

 - mmap handler for dma ops as generic handler no longer works for us
   [Alexey]

 - Fixes for EZChip platform [Noam]

 - Fix RTC clocksource driver build issue

 - ARC IRQ handling fixes [Yuriy]

 - Revert a recent makefile change which doesn't go well with oldish
   tools out in the wild

* tag 'arc-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARCv2: MCIP: Use IDU_M_DISTRI_DEST mode if there is only 1 destination core
  ARC: IRQ: Do not use hwirq as virq and vice versa
  ARC: [plat-eznps] set default baud for early console
  ARC: [plat-eznps] remove IPI clear from SMP operations
  Revert "ARC: build: retire old toggles"
  ARC: timer: rtc: implement read loop in "C" vs. inline asm
  ARC: change return value of userspace cmpxchg assist syscall
  arc: Implement arch-specific dma_map_ops.mmap
  ARC: [SMP] avoid overriding present cpumask
  ARC: Enable PERF_EVENTS in nSIM driven platforms
2016-11-11 16:51:50 -08:00
Linus Torvalds
e3d183c035 platform-drivers-x86 for 4.9-3
Minor doc fix, a DMI match for ideapad and a fix to toshiba-wmi to avoid loading
 on non-toshiba systems.
 
 Documentation/ABI:
  - ibm_rtl: The "What:" fields are incomplete
 
 toshiba-wmi:
  - Fix loading the driver on non Toshiba laptops
 
 ideapad-laptop:
  - Add another DMI entry for Yoga 900
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Merge tag 'platform-drivers-x86-v4.9-3' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86

Pull x86 platform driver fixes from Darren Hart:
 "Minor doc fix, a DMI match for ideapad and a fix to toshiba-wmi to
  avoid loading on non-toshiba systems.

  Documentation/ABI:
   - ibm_rtl: The "What:" fields are incomplete

  toshiba-wmi:
   - Fix loading the driver on non Toshiba laptops

  ideapad-laptop:
   - Add another DMI entry for Yoga 900"

* tag 'platform-drivers-x86-v4.9-3' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
  Documentation/ABI: ibm_rtl: The "What:" fields are incomplete
  toshiba-wmi: Fix loading the driver on non Toshiba laptops
  ideapad-laptop: Add another DMI entry for Yoga 900
2016-11-11 16:48:49 -08:00
Linus Torvalds
5f3a5cb8e7 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
 "Two small (really, one liners both of them!) fixes that should go into
  this series:

   - Request allocation error handling fix for nbd, from Christophe,
     fixing a regression in this series.

   - An oops fix for drbd. Not a regression in this series, but stable
     material. From Richard"

* 'for-linus' of git://git.kernel.dk/linux-block:
  drbd: Fix kernel_sendmsg() usage - potential NULL deref
  nbd: Fix error handling
2016-11-11 16:42:03 -08:00
Linus Torvalds
8233008f5d pci-v4.9-fixes-3
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Merge tag 'pci-v4.9-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Update MAINTAINERS for Intel VMD driver filename

 - Update Rockchip rk3399 host bridge driver DTS and resets

 - Fix ROM shadow problem that made some video device initialization
   fail

* tag 'pci-v4.9-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: VMD: Update filename to reflect move
  arm64: dts: rockchip: add three new resets for rk3399 PCIe controller
  PCI: rockchip: Add three new resets as required properties
  PCI: Don't attempt to claim shadow copies of ROM
2016-11-11 16:38:26 -08:00
Linus Torvalds
4fb68f9789 amd, radeon, i915, imx, msm and udl fixes
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Merge tag 'drm-fixes-for-v4.9-rc5' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "AMD, radeon, i915, imx, msm and udl fixes:

   - amdgpu/radeon have a number of power management regressions and
     fixes along with some better error checking

   - imx has a single regression fix

   - udl has a single kmalloc instead of stack for usb control msg fix

   - msm has some fixes for modesetting bugs and regressions

   - i915 has a one fix for a Sandybridge regression along with some
     others for DP audio.

  They all seem pretty okay at this stage, we've got one MST fix I know
  going through process for i915, but I expect it'll be next week"

* tag 'drm-fixes-for-v4.9-rc5' of git://people.freedesktop.org/~airlied/linux: (30 commits)
  drm/udl: make control msg static const. (v2)
  drm/amd/powerplay: implement get_clock_by_type for iceland.
  drm/amd/powerplay/smu7: fix checks in smu7_get_evv_voltages (v2)
  drm/amd/powerplay: update phm_get_voltage_evv_on_sclk for iceland
  drm/amd/powerplay: propagate errors in phm_get_voltage_evv_on_sclk
  drm/imx: disable planes before DC
  drm/amd/powerplay: return false instead of -EINVAL
  drm/amdgpu/powerplay/smu7: fix unintialized data usage
  drm/amdgpu: fix crash in acp_hw_fini
  drm/i915: Limit Valleyview and earlier to only using mappable scanout
  drm/i915: Round tile chunks up for constructing partial VMAs
  drm/i915/dp: Extend BDW DP audio workaround to GEN9 platforms
  drm/i915/dp: BDW cdclk fix for DP audio
  drm/i915/vlv: Prevent enabling hpd polling in late suspend
  drm/i915: Respect alternate_ddc_pin for all DDI ports
  drm/msm: Fix error handling crashes seen when VRAM allocation fails
  drm/msm/mdp5: 8x16 actually has 8 mixer stages
  drm/msm/mdp5: no scaling support on RGBn pipes for 8x16
  drm/msm/mdp5: handle non-fullscreen base plane case
  drm/msm: Set CLK_IGNORE_UNUSED flag for PLL clocks
  ...
2016-11-11 16:25:28 -08:00
Linus Torvalds
b8b73df345 MMC core:
- Fix mmc card initialization for hosts not supporting HW busy detection
  - Fix mmc_test for sending commands during non-blocking write
 
 MMC host:
  - mxs: Avoid using an uninitialized
  - sdhci: Restore enhanced strobe setting during runtime resume
  - sdhci: Fix a couple of reset related issues
  - dw_mmc: Fix a reset controller issue
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Merge tag 'mmc-v4.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Fix mmc card initialization for hosts not supporting HW busy
     detection
   - Fix mmc_test for sending commands during non-blocking write

  MMC host:
   - mxs: Avoid using an uninitialized
   - sdhci: Restore enhanced strobe setting during runtime resume
   - sdhci: Fix a couple of reset related issues
   - dw_mmc: Fix a reset controller issue"

* tag 'mmc-v4.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: mxs: Initialize the spinlock prior to using it
  mmc: mmc: Use 500ms as the default generic CMD6 timeout
  mmc: mmc_test: Fix "Commands during non-blocking write" tests
  mmc: sdhci: Fix missing enhanced strobe setting during runtime resume
  mmc: sdhci: Reset cmd and data circuits after tuning failure
  mmc: sdhci: Fix unexpected data interrupt handling
  mmc: sdhci: Fix CMD line reset interfering with ongoing data transfer
  mmc: dw_mmc: add the "reset" as name of reset controller
  Documentation: synopsys-dw-mshc: add binding for reset-names
2016-11-11 16:23:14 -08:00
Linus Torvalds
5c03b53cb7 Pin control fixes for the v4.9 cycle:
- Fix a host of runtime problems with the Intel
   Cherryview driver: suspend/resume needs to be
   marshalled properly, and strange effects from BIOS
   interaction during suspend/resume need to be
   dealt with.
 
 - A single bit was being set wrong in the Aspeed
   driver.
 
 - Fix an iProc probe ordering fallout resulting from
   v4.9 refactorings for bus population.
 
 - Do not specify a default trigger in the ST Micro
   cascaded GPIO IRQ controller: the kernel will moan.
 
 - Make IRQs optional altogether on the STM32 driver,
   it turns out not all systems have them or want them.
 
 - Fix a re-probe bug in the i.MX driver, it will
   eventually crash if probed repeatedly, not good.
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Merge tag 'pinctrl-v4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "All is about drivers, no core business going on.

   - Fix a host of runtime problems with the Intel Cherryview driver:
     suspend/resume needs to be marshalled properly, and strange effects
     from BIOS interaction during suspend/resume need to be dealt with.

   - A single bit was being set wrong in the Aspeed driver.

   - Fix an iProc probe ordering fallout resulting from v4.9
     refactorings for bus population.

   - Do not specify a default trigger in the ST Micro cascaded GPIO IRQ
     controller: the kernel will moan.

   - Make IRQs optional altogether on the STM32 driver, it turns out not
     all systems have them or want them.

   - Fix a re-probe bug in the i.MX driver, it will eventually crash if
     probed repeatedly, not good"

* tag 'pinctrl-v4.9-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl-aspeed-g5: Never set SCU90[6]
  pinctrl: cherryview: Prevent possible interrupt storm on resume
  pinctrl: cherryview: Serialize register access in suspend/resume
  pinctrl: imx: reset group index on probe
  pinctrl: stm32: move gpio irqs binding to optional
  pinctrl: stm32: remove dependency with interrupt controller
  pinctrl: st: don't specify default interrupt trigger
  pinctrl: iproc: Fix iProc and NSP GPIO support
2016-11-11 16:21:20 -08:00
Rafael J. Wysocki
cd16f3dcdb Merge branches 'pm-tools-fixes' and 'pm-sleep-fixes'
* pm-tools-fixes:
  cpupower: Correct return type of cpu_power_is_cpu_online() in cpufreq-set

* pm-sleep-fixes:
  PM / sleep: don't suspend parent when async child suspend_{noirq, late} fails
  PM / sleep: fix device reference leak in test_suspend
2016-11-11 23:24:58 +01:00
Rafael J. Wysocki
66f5854c68 Merge branch 'device-properties'
* device-properties:
  ACPI / platform: Add support for build-in properties
2016-11-11 23:23:02 +01:00
Linus Torvalds
015ed9433b Merge branch 'maybe-uninitialized' (patches from Arnd)
Merge fixes for -Wmaybe-uninitialized from Arnd Bergmann:
 "It took a while for some patches to make it into mainline through
  maintainer trees, but the 28-patch series is now reduced to 10, with
  one tiny patch added at the end.

  Aside from patches that are no longer required, I did these changes
  compared to version 1:

   - Dropped "iio: maxim_thermocouple: detect invalid storage size in
     read()", which is currently in linux-next as commit 32cb7d27e6.
     This is the only remaining warning I see for a couple of corner
     cases (kbuild bot reports it on blackfin, kernelci bot and arm-soc
     bot both report it on arm64)

   - Dropped "brcmfmac: avoid maybe-uninitialized warning in
     brcmf_cfg80211_start_ap", which is currently in net/master merge
     pending.

   - Dropped two x86 patches, "x86: math-emu: possible uninitialized
     variable use" and "x86: mark target address as output in 'insb'
     asm" as they do not seem to trigger for a default build, and I got
     no feedback on them. Both of these are ancient issues and seem
     harmless, I will send them again to the x86 maintainers once the
     rest is merged.

   - Dropped "rbd: false-postive gcc-4.9 -Wmaybe-uninitialized" based on
     feedback from Ilya Dryomov, who already has a different fix queued
     up for v4.10. The kbuild bot reports this as a warning for xtensa.

   - Replaced "crypto: aesni: avoid -Wmaybe-uninitialized warning" with
     a simpler patch, this one always triggers but my first solution
     would not be safe for linux-4.9 any more at this point. I'll follow
     up with the larger patch as a cleanup for 4.10.

   - Replaced "dib0700: fix nec repeat handling" with a better one,
     contributed by Sean Young"

* -Wmaybe-uninitialized fixes:
  Kbuild: enable -Wmaybe-uninitialized warnings by default
  pcmcia: fix return value of soc_pcmcia_regulator_set
  infiniband: shut up a maybe-uninitialized warning
  crypto: aesni: shut up -Wmaybe-uninitialized warning
  rc: print correct variable for z8f0811
  dib0700: fix nec repeat handling
  s390: pci: don't print uninitialized data for debugging
  nios2: fix timer initcall return value
  x86: apm: avoid uninitialized data
  NFSv4.1: work around -Wmaybe-uninitialized warning
  Kbuild: enable -Wmaybe-uninitialized warning for "make W=1"
2016-11-11 10:03:01 -08:00
Linus Torvalds
968ef8de55 Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
 "15 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  lib/stackdepot: export save/fetch stack for drivers
  mm: kmemleak: scan .data.ro_after_init
  memcg: prevent memcg caches to be both OFF_SLAB & OBJFREELIST_SLAB
  coredump: fix unfreezable coredumping task
  mm/filemap: don't allow partially uptodate page for pipes
  mm/hugetlb: fix huge page reservation leak in private mapping error paths
  ocfs2: fix not enough credit panic
  Revert "console: don't prefer first registered if DT specifies stdout-path"
  mm: hwpoison: fix thp split handling in memory_failure()
  swapfile: fix memory corruption via malformed swapfile
  mm/cma.c: check the max limit for cma allocation
  scripts/bloat-o-meter: fix SIGPIPE
  shmem: fix pageflags after swapping DMA32 object
  mm, frontswap: make sure allocated frontswap map is assigned
  mm: remove extra newline from allocation stall warning
2016-11-11 09:44:23 -08:00
Linus Torvalds
c5e4ca6da9 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull VFS fixes from Al Viro:
 "Christoph's and Jan's aio fixes, fixup for generic_file_splice_read
  (removal of pointless detritus that actually breaks it when used for
  gfs2 ->splice_read()) and fixup for generic_file_read_iter()
  interaction with ITER_PIPE destinations."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  splice: remove detritus from generic_file_splice_read()
  mm/filemap: don't allow partially uptodate page for pipes
  aio: fix freeze protection of aio writes
  fs: remove aio_run_iocb
  fs: remove the never implemented aio_fsync file operation
  aio: hold an extra file reference over AIO read/write operations
2016-11-11 09:19:01 -08:00
Linus Torvalds
ef091b3cef Ceph's ->read_iter() implementation is incompatible with the new
generic_file_splice_read() code that went into -rc1.  Switch to the
 less efficient default_file_splice_read() for now; the proper fix is
 being held for 4.10.
 
 We also have a fix for a 4.8 regression and a trival libceph fixup.
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Merge tag 'ceph-for-4.9-rc5' of git://github.com/ceph/ceph-client

Pull Ceph fixes from Ilya Dryomov:
 "Ceph's ->read_iter() implementation is incompatible with the new
  generic_file_splice_read() code that went into -rc1.  Switch to the
  less efficient default_file_splice_read() for now; the proper fix is
  being held for 4.10.

  We also have a fix for a 4.8 regression and a trival libceph fixup"

* tag 'ceph-for-4.9-rc5' of git://github.com/ceph/ceph-client:
  libceph: initialize last_linger_id with a large integer
  libceph: fix legacy layout decode with pool 0
  ceph: use default file splice read callback
2016-11-11 09:17:10 -08:00
Linus Torvalds
ef5beed998 NFS client bugfixes for Linux 4.9
Bugfixes:
 - Trim extra slashes in v4 nfs_paths to fix tools that use this
 - Fix a -Wmaybe-uninitialized warnings
 - Fix suspicious RCU usages
 - Fix Oops when mounting multiple servers at once
 - Suppress a false-positive pNFS error
 - Fix a DMAR failure in NFS over RDMA
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Merge tag 'nfs-for-4.9-3' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client bugfixes from Anna Schumaker:
 "Most of these fix regressions in 4.9, and none are going to stable
  this time around.

  Bugfixes:
   - Trim extra slashes in v4 nfs_paths to fix tools that use this
   - Fix a -Wmaybe-uninitialized warnings
   - Fix suspicious RCU usages
   - Fix Oops when mounting multiple servers at once
   - Suppress a false-positive pNFS error
   - Fix a DMAR failure in NFS over RDMA"

* tag 'nfs-for-4.9-3' of git://git.linux-nfs.org/projects/anna/linux-nfs:
  xprtrdma: Fix DMAR failure in frwr_op_map() after reconnect
  fs/nfs: Fix used uninitialized warn in nfs4_slot_seqid_in_use()
  NFS: Don't print a pNFS error if we aren't using pNFS
  NFS: Ignore connections that have cl_rpcclient uninitialized
  SUNRPC: Fix suspicious RCU usage
  NFSv4.1: work around -Wmaybe-uninitialized warning
  NFS: Trim extra slash in v4 nfs_path
2016-11-11 09:15:30 -08:00
Linus Torvalds
a4fac3b5d1 xfs: update for 4.9-rc5
In this update:
 o fix for aborting deferred transactions on filesystem shutdown.
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Merge tag 'xfs-fixes-for-linus-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs

Pull xfs fix from Dave Chinner:
 "This is a fix for an unmount hang (regression) when the filesystem is
  shutdown.  It was supposed to go to you for -rc3, but I accidentally
  tagged the commit prior to it in that pullreq.

  Summary:

   - fix for aborting deferred transactions on filesystem shutdown"

* tag 'xfs-fixes-for-linus-4.9-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs:
  xfs: defer should abort intent items if the trans roll fails
2016-11-11 09:13:48 -08:00
Arnd Bergmann
4324cb23f4 Kbuild: enable -Wmaybe-uninitialized warnings by default
Previously the warnings were added back at the W=1 level and above, this
now turns them on again by default, assuming that we have addressed all
warnings and again have a clean build for v4.10.

I found a number of new warnings in linux-next already and submitted
bugfixes for those.  Hopefully they are caught by the 0day builder in
the future as soon as this patch is merged.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Arnd Bergmann
75ed26878b pcmcia: fix return value of soc_pcmcia_regulator_set
The newly introduced soc_pcmcia_regulator_set() function sometimes
returns without setting its return code, as shown by this warning:

  drivers/pcmcia/soc_common.c: In function 'soc_pcmcia_regulator_set':
  drivers/pcmcia/soc_common.c:112:5: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]

This changes it to propagate the regulator_disable() result instead.

Fixes: ac61b6001a ("pcmcia: soc_common: add support for Vcc and Vpp regulators")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Arnd Bergmann
c50e90d0d2 infiniband: shut up a maybe-uninitialized warning
Some configurations produce this harmless warning when built with gcc
-Wmaybe-uninitialized:

  infiniband/core/cma.c: In function 'cma_get_net_dev':
  infiniband/core/cma.c:1242:12: warning: 'src_addr_storage.sin_addr.s_addr' may be used uninitialized in this function [-Wmaybe-uninitialized]

I previously reported this for the powerpc64 defconfig, but have now
reproduced the same thing for x86 as well, using gcc-5 or higher.

The code looks correct to me, and this change just rearranges it by
making sure we alway initialize the entire address structure to make the
warning disappear.  My first approach added an initialization at the
time of the declaration, which Doug commented may be too costly, so I
hope this version doesn't add overhead.

Link: http://arm-soc.lixom.net/buildlogs/mainline/v4.7-rc6/buildall.powerpc.ppc64_defconfig.log.passed
Link: https://patchwork.kernel.org/patch/9212825/
Acked-by: Haggai Eran <haggaie@mellanox.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Arnd Bergmann
beae2c9eb5 crypto: aesni: shut up -Wmaybe-uninitialized warning
The rfc4106 encrypy/decrypt helper functions cause an annoying
false-positive warning in allmodconfig if we turn on
-Wmaybe-uninitialized warnings again:

  arch/x86/crypto/aesni-intel_glue.c: In function ‘helper_rfc4106_decrypt’:
  include/linux/scatterlist.h:67:31: warning: ‘dst_sg_walk.sg’ may be used uninitialized in this function [-Wmaybe-uninitialized]

The problem seems to be that the compiler doesn't track the state of the
'one_entry_in_sg' variable across the kernel_fpu_begin/kernel_fpu_end
section.

This takes the easy way out by adding a bogus initialization, which
should be harmless enough to get the patch into v4.9 so we can turn on
this warning again by default without producing useless output.  A
follow-up patch for v4.10 rearranges the code to make the warning go
away.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Arnd Bergmann
9cdbe14fb4 rc: print correct variable for z8f0811
A recent rework accidentally left a debugging printk untouched while
changing the meaning of the variables, leading to an uninitialized
variable being printed:

  drivers/media/i2c/ir-kbd-i2c.c: In function 'get_key_haup_common':
  drivers/media/i2c/ir-kbd-i2c.c:62:2: error: 'toggle' may be used uninitialized in this function [-Werror=maybe-uninitialized]

This prints the correct one instead, as we did before the patch.

Fixes: 00bb820755 ("[media] rc: Hauppauge z8f0811 can decode RC6")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Sean Young
ba13e98f2c dib0700: fix nec repeat handling
When receiving a nec repeat, ensure the correct scancode is repeated
rather than a random value from the stack.  This removes the need for
the bogus uninitialized_var() and also fixes the warnings:

    drivers/media/usb/dvb-usb/dib0700_core.c: In function ‘dib0700_rc_urb_completion’:
    drivers/media/usb/dvb-usb/dib0700_core.c:679: warning: ‘protocol’ may be used uninitialized in this function

[sean addon: So after writing the patch and submitting it, I've bought the
             hardware on ebay. Without this patch you get random scancodes
             on nec repeats, which the patch indeed fixes.]

Signed-off-by: Sean Young <sean@mess.org>
Tested-by: Sean Young <sean@mess.org>
Cc: stable@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Arnd Bergmann
92dfffee97 s390: pci: don't print uninitialized data for debugging
gcc correctly warns about an incorrect use of the 'pa' variable in case
we pass an empty scatterlist to __s390_dma_map_sg:

  arch/s390/pci/pci_dma.c: In function '__s390_dma_map_sg':
  arch/s390/pci/pci_dma.c:309:13: warning: 'pa' may be used uninitialized in this function [-Wmaybe-uninitialized]

This adds a bogus initialization to the function to sanitize the debug
output.  I would have preferred a solution without the initialization,
but I only got the report from the kbuild bot after turning on the
warning again, and didn't manage to reproduce it myself.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Arnd Bergmann
069013a9e2 nios2: fix timer initcall return value
When called more than twice, the nios2_time_init() function return an
uninitialized value, as detected by gcc -Wmaybe-uninitialized

  arch/nios2/kernel/time.c: warning: 'ret' may be used uninitialized in this function

This makes it return '0' here, matching the comment above the function.

Acked-by: Ley Foon Tan <lftan@altera.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Arnd Bergmann
3a6d867612 x86: apm: avoid uninitialized data
apm_bios_call() can fail, and return a status in its argument structure.
If that status however is zero during a call from
apm_get_power_status(), we end up using data that may have never been
set, as reported by "gcc -Wmaybe-uninitialized":

  arch/x86/kernel/apm_32.c: In function ‘apm’:
  arch/x86/kernel/apm_32.c:1729:17: error: ‘bx’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  arch/x86/kernel/apm_32.c:1835:5: error: ‘cx’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  arch/x86/kernel/apm_32.c:1730:17: note: ‘cx’ was declared here
  arch/x86/kernel/apm_32.c:1842:27: error: ‘dx’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
  arch/x86/kernel/apm_32.c:1731:17: note: ‘dx’ was declared here

This changes the function to return "APM_NO_ERROR" here, which makes the
code more robust to broken BIOS versions, and avoids the warning.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Jiri Kosina <jkosina@suse.cz>
Reviewed-by: Luis R. Rodriguez <mcgrof@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Arnd Bergmann
e84efa32b9 NFSv4.1: work around -Wmaybe-uninitialized warning
A bugfix introduced a harmless gcc warning in nfs4_slot_seqid_in_use if
we enable -Wmaybe-uninitialized again:

  fs/nfs/nfs4session.c:203:54: error: 'cur_seq' may be used uninitialized in this function [-Werror=maybe-uninitialized]

gcc is not smart enough to conclude that the IS_ERR/PTR_ERR pair results
in a nonzero return value here.  Using PTR_ERR_OR_ZERO() instead makes
this clear to the compiler.

Fixes: e09c978aae ("NFSv4.1: Fix Oopsable condition in server callback races")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Arnd Bergmann
a76bcf557e Kbuild: enable -Wmaybe-uninitialized warning for "make W=1"
Traditionally, we have always had warnings about uninitialized variables
enabled, as this is part of -Wall, and generally a good idea [1], but it
also always produced false positives, mainly because this is a variation
of the halting problem and provably impossible to get right in all cases
[2].

Various people have identified cases that are particularly bad for false
positives, and in commit e74fc973b6 ("Turn off -Wmaybe-uninitialized
when building with -Os"), I turned off the warning for any build that
was done with CC_OPTIMIZE_FOR_SIZE.  This drastically reduced the number
of false positive warnings in the default build but unfortunately had
the side effect of turning the warning off completely in 'allmodconfig'
builds, which in turn led to a lot of warnings (both actual bugs, and
remaining false positives) to go in unnoticed.

With commit 877417e6ff ("Kbuild: change CC_OPTIMIZE_FOR_SIZE
definition") enabled the warning again for allmodconfig builds in v4.7
and in v4.8-rc1, I had finally managed to address all warnings I get in
an ARM allmodconfig build and most other maybe-uninitialized warnings
for ARM randconfig builds.

However, commit 6e8d666e92 ("Disable "maybe-uninitialized" warning
globally") was merged at the same time and disabled it completely for
all configurations, because of false-positive warnings on x86 that I had
not addressed until then.  This caused a lot of actual bugs to get
merged into mainline, and I sent several dozen patches for these during
the v4.9 development cycle.  Most of these are actual bugs, some are for
correct code that is safe because it is only called under external
constraints that make it impossible to run into the case that gcc sees,
and in a few cases gcc is just stupid and finds something that can
obviously never happen.

I have now done a few thousand randconfig builds on x86 and collected
all patches that I needed to address every single warning I got (I can
provide the combined patch for the other warnings if anyone is
interested), so I hope we can get the warning back and let people catch
the actual bugs earlier.

This reverts the change to disable the warning completely and for now
brings it back at the "make W=1" level, so we can get it merged into
mainline without introducing false positives.  A follow-up patch enables
it on all levels unless some configuration option turns it off because
of false-positives.

Link: https://rusty.ozlabs.org/?p=232 [1]
Link: https://gcc.gnu.org/wiki/Better_Uninitialized_Warnings [2]
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:45:08 -08:00
Chris Wilson
ae65a21fb8 lib/stackdepot: export save/fetch stack for drivers
Some drivers would like to record stacktraces in order to aide leak
tracing.  As stackdepot already provides a facility for only storing the
unique traces, thereby reducing the memory required, export that
functionality for use by drivers.

The code was originally created for KASAN and moved under lib in commit
cd11016e5f ("mm, kasan: stackdepot implementation.  Enable stackdepot
for SLAB") so that it could be shared with mm/.  In turn, we want to
share it now with drivers.

Link: http://lkml.kernel.org/r/20161108133209.22704-1-chris@chris-wilson.co.uk
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: "Kirill A. Shutemov" <kirill@shutemov.name>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:12:37 -08:00
Jakub Kicinski
d7c19b066d mm: kmemleak: scan .data.ro_after_init
Limit the number of kmemleak false positives by including
.data.ro_after_init in memory scanning.  To achieve this we need to add
symbols for start and end of the section to the linker scripts.

The problem was been uncovered by commit 56989f6d85 ("genetlink: mark
families as __ro_after_init").

Link: http://lkml.kernel.org/r/1478274173-15218-1-git-send-email-jakub.kicinski@netronome.com
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-11-11 08:12:37 -08:00