Commit graph

635247 commits

Author SHA1 Message Date
Babu Moger e245d99e6c lockdep: Limit static allocations if PROVE_LOCKING_SMALL is defined
Reduce the size of data structure for lockdep entries by half if
PROVE_LOCKING_SMALL if defined. This is used only for sparc.

Signed-off-by: Babu Moger <babu.moger@oracle.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 11:33:19 -08:00
Babu Moger e6b5f1be7a config: Adding the new config parameter CONFIG_PROVE_LOCKING_SMALL for sparc
This new config parameter limits the space used for "Lock debugging:
prove locking correctness" by about 4MB. The current sparc systems have
the limitation of 32MB size for kernel size including .text, .data and
.bss sections. With PROVE_LOCKING feature, the kernel size could grow
beyond this limit and causing system boot-up issues. With this option,
kernel limits the size of the entries of lock_chains, stack_trace etc.,
so that kernel fits in required size limit. This is not visible to user
and only used for sparc.

Signed-off-by: Babu Moger <babu.moger@oracle.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 11:33:19 -08:00
Benjamin Coddington d41cbfc9a6 NFSv4.1: Handle NFS4ERR_OLD_STATEID in nfs4_reclaim_open_state
Now that we're doing TEST_STATEID in nfs4_reclaim_open_state(), we can have
a NFS4ERR_OLD_STATEID returned from nfs41_open_expired() .  Instead of
marking state recovery as failed, mark the state for recovery again.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-11-18 14:27:27 -05:00
Tushar Dave 1a9bbccaf8 sunbmac: Fix compiler warning
sunbmac uses '__u32' for dma handle while invoking kernel DMA APIs,
instead of using dma_addr_t. This hasn't caused any 'incompatible
pointer type' warning on SPARC because until now dma_addr_t is of
type u32. However, recent changes in SPARC ATU (iommu) enables 64bit
DMA and therefore dma_addr_t becomes of type u64. This makes
'incompatible pointer type' warnings inevitable.

e.g.
drivers/net/ethernet/sun/sunbmac.c: In function ‘bigmac_ether_init’:
drivers/net/ethernet/sun/sunbmac.c:1166: warning: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type
./include/linux/dma-mapping.h:445: note: expected ‘dma_addr_t *’ but argument is of type ‘__u32 *’

This patch resolves above compiler warning.

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: chris hyser <chris.hyser@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 11:18:27 -08:00
Tushar Dave 266439c94d sunqe: Fix compiler warnings
sunqe uses '__u32' for dma handle while invoking kernel DMA APIs,
instead of using dma_addr_t. This hasn't caused any 'incompatible
pointer type' warning on SPARC because until now dma_addr_t is of
type u32. However, recent changes in SPARC ATU (iommu) enables 64bit
DMA and therefore dma_addr_t becomes of type u64. This makes
'incompatible pointer type' warnings inevitable.

e.g.
drivers/net/ethernet/sun/sunqe.c: In function ‘qec_ether_init’:
drivers/net/ethernet/sun/sunqe.c:883: warning: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type
./include/linux/dma-mapping.h:445: note: expected ‘dma_addr_t *’ but argument is of type ‘__u32 *’
drivers/net/ethernet/sun/sunqe.c:885: warning: passing argument 3 of ‘dma_alloc_coherent’ from incompatible pointer type
./include/linux/dma-mapping.h:445: note: expected ‘dma_addr_t *’ but argument is of type ‘__u32 *’

This patch resolves above compiler warnings.

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: chris hyser <chris.hyser@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 11:18:26 -08:00
Trond Myklebust 5cc7861eb5 NFSv4: Don't call close if the open stateid has already been cleared
Ensure we test to see if the open stateid is actually set, before we
send a CLOSE.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-11-18 14:18:02 -05:00
David S. Miller 49cc0c43d0 Merge branch 'sun4v-64bit-DMA'
Tushar Dave says:

====================
sparc: Enable sun4v hypervisor PCI IOMMU v2 APIs and ATU

ATU (Address Translation Unit) is a new IOMMU in SPARC supported with
sun4v hypervisor PCI IOMMU v2 APIs.

Current SPARC IOMMU supports only 32bit address ranges and one TSB
per PCIe root complex that has a 2GB per root complex DVMA space
limit. The limit has become a scalability bottleneck nowadays that
a typical 10G/40G NIC can consume 500MB DVMA space per instance.
When DVMA resource is exhausted, devices will not be usable
since the driver can't allocate DVMA.

For example, we recently experienced legacy IOMMU limitation while
using i40e driver in system with large number of CPUs (e.g. 128).
Four ports of i40e, each request 128 QP (Queue Pairs). Each queue has
512 (default) descriptors. So considering only RX queues (because RX
premap DMA buffers), i40e takes 4*128*512 number of DMA entries in
IOMMU table. Legacy IOMMU can have at max (2G/8K)- 1 entries available
in table. So bringing up four instance of i40e alone saturate existing
IOMMU resource.

ATU removes bottleneck by allowing guest os to create IOTSB of size
32G (or more) with 64bit address ranges available in ATU HW. 32G is
more than enough DVMA space to be shared by all PCIe devices under
root complex contrast to 2G space provided by legacy IOMMU.

ATU allows PCIe devices to use 64bit DMA addressing. Devices
which choose to use 32bit DMA mask will continue to work with the
existing legacy IOMMU.

The patch set is tested on sun4v (T1000, T2000, T3, T4, T5, T7, S7)
and sun4u SPARC.

Thanks.
-Tushar

v2->v3:
- Patch #5 addresses comment by Joe Perches.
 -- use %s, __func__ instead of embedding the function name.

v1->v2:
- Patch #2 addresses comments by Dave M.
 -- use page allocator to allocate IOTSB.
 -- use true/false with boolean variables.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 11:17:10 -08:00
Tushar Dave d30a6b84df sparc64: Enable 64-bit DMA
ATU 64bit addressing allows PCIe devices with 64bit DMA capabilities
to use ATU for 64bit DMA.

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: chris hyser <chris.hyser@oracle.com>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 11:17:00 -08:00
Tushar Dave f08978b0fd sparc64: Enable sun4v dma ops to use IOMMU v2 APIs
Add Hypervisor IOMMU v2 APIs pci_iotsb_map(), pci_iotsb_demap() and
enable sun4v dma ops to use IOMMU v2 API for all PCIe devices with
64bit DMA mask.

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: chris hyser <chris.hyser@oracle.com>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 11:17:00 -08:00
Tushar Dave 5116ab4eab sparc64: Bind PCIe devices to use IOMMU v2 service
In order to use Hypervisor (HV) IOMMU v2 API for map/demap, each PCIe
device has to be bound to IOTSB using HV API pci_iotsb_bind().

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: chris hyser <chris.hyser@oracle.com>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 11:16:59 -08:00
Tushar Dave 31f077dc7d sparc64: Initialize iommu_map_table and iommu_pool
Like legacy IOMMU, use common iommu_map_table and iommu_pool for ATU.
This change initializes iommu_map_table and iommu_pool for ATU.

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: chris hyser <chris.hyser@oracle.com>
Reviewed-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 11:16:59 -08:00
Tushar Dave f0248c1524 sparc64: Add ATU (new IOMMU) support
ATU (Address Translation Unit) is a new IOMMU in SPARC supported with
Hypervisor IOMMU v2 APIs.

Current SPARC IOMMU supports only 32bit address ranges and one TSB
per PCIe root complex that has a 2GB per root complex DVMA space
limit. The limit has become a scalability bottleneck nowadays that
a typical 10G/40G NIC can consume 300MB-500MB DVMA space per
instance. When DVMA resource is exhausted, devices will not be usable
since the driver can't allocate DVMA.

ATU removes bottleneck by allowing guest os to create IOTSB of size
32G (or more) with 64bit address ranges available in ATU HW. 32G is
more than enough DVMA space to be shared by all PCIe devices under
root complex contrast to 2G space provided by legacy IOMMU.

ATU allows PCIe devices to use 64bit DMA addressing. Devices
which choose to use 32bit DMA mask will continue to work with the
existing legacy IOMMU.

Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Reviewed-by: chris hyser <chris.hyser@oracle.com>
Acked-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 11:16:59 -08:00
Dave Kleikamp c88c545bf3 sparc64: Add FORCE_MAX_ZONEORDER and default to 13
This change allows ATU (new IOMMU) in SPARC systems to request
large (32M) contiguous memory during boot for creating IOTSB backing
store.

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 11:16:58 -08:00
Sabrina Dubroca f82ef3e10a rtnetlink: fix FDB size computation
Add missing NDA_VLAN attribute's size.

Fixes: 1e53d5bb88 ("net: Pass VLAN ID to rtnl_fdb_notify.")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 14:09:42 -05:00
Stefan Hajnoczi 0f5258cd91 netns: fix get_net_ns_by_fd(int pid) typo
The argument to get_net_ns_by_fd() is a /proc/$PID/ns/net file
descriptor not a pid.  Fix the typo.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Rami Rosen <roszenrami@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 14:01:58 -05:00
David S. Miller 87305c4cd2 A few more bugfixes:
* limit # of scan results stored in memory - this is a long-standing bug
    Jouni and I only noticed while discussing other things in Santa Fe
  * revert AP_LINK_PS patch that was causing issues (Felix)
  * various A-MSDU/A-MPDU fixes for TXQ code (Felix)
  * interoperability workaround for peers with broken VHT capabilities
    (Filip Matusiak)
  * add bitrate definition for a VHT MCS that's supposed to be invalid
    but gets used by some hardware anyway (Thomas Pedersen)
  * beacon timer fix in hwsim (Benjamin Beichler)
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Merge tag 'mac80211-for-davem-2016-11-18' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
A few more bugfixes:
 * limit # of scan results stored in memory - this is a long-standing bug
   Jouni and I only noticed while discussing other things in Santa Fe
 * revert AP_LINK_PS patch that was causing issues (Felix)
 * various A-MSDU/A-MPDU fixes for TXQ code (Felix)
 * interoperability workaround for peers with broken VHT capabilities
   (Filip Matusiak)
 * add bitrate definition for a VHT MCS that's supposed to be invalid
   but gets used by some hardware anyway (Thomas Pedersen)
 * beacon timer fix in hwsim (Benjamin Beichler)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 14:00:27 -05:00
WANG Cong 06a77b07e3 af_unix: conditionally use freezable blocking calls in read
Commit 2b15af6f95 ("af_unix: use freezable blocking calls in read")
converts schedule_timeout() to its freezable version, it was probably
correct at that time, but later, commit 2b514574f7
("net: af_unix: implement splice for stream af_unix sockets") breaks
the strong requirement for a freezable sleep, according to
commit 0f9548ca10:

    We shouldn't try_to_freeze if locks are held.  Holding a lock can cause a
    deadlock if the lock is later acquired in the suspend or hibernate path
    (e.g.  by dpm).  Holding a lock can also cause a deadlock in the case of
    cgroup_freezer if a lock is held inside a frozen cgroup that is later
    acquired by a process outside that group.

The pipe_lock is still held at that point.

So use freezable version only for the recvmsg call path, avoid impact for
Android.

Fixes: 2b514574f7 ("net: af_unix: implement splice for stream af_unix sockets")
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Colin Cross <ccross@android.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 13:58:39 -05:00
David S. Miller 0e2d1af399 Merge branch 'cpsw-fixes'
Johan Hovold says:

====================
net: cpsw: fix leaks and probe deferral

This series fixes as number of leaks and issues in the cpsw probe-error
and driver-unbind paths, some which specifically prevented deferred
probing.

v2
 - Keep platform device runtime-resumed throughout probe instead of
   resuming in the probe error path as suggested by Grygorii (patch
   1/7).

 - Runtime-resume platform device before registering any children in
   order to make sure it is synchronously suspended after deregistering
   children in the error path (patch 3/7).
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 13:48:54 -05:00
Johan Hovold 23a0987322 net: ethernet: ti: cpsw: fix fixed-link phy probe deferral
Make sure to propagate errors from of_phy_register_fixed_link() which
can fail with -EPROBE_DEFER.

Fixes: 1f71e8c96f ("drivers: net: cpsw: Add support for fixed-link
PHY")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 13:48:54 -05:00
Johan Hovold 3420ea8850 net: ethernet: ti: cpsw: add missing sanity check
Make sure to check for allocation failures before dereferencing a
NULL-pointer during probe.

Fixes: 649a1688c9 ("net: ethernet: ti: cpsw: create common struct to
hold shared driver data")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 13:48:53 -05:00
Johan Hovold a7fe9d466f net: ethernet: ti: cpsw: fix secondary-emac probe error path
Make sure to deregister the primary device in case the secondary emac
fails to probe.

kernel BUG at /home/johan/work/omicron/src/linux/net/core/dev.c:7743!
...
[<c05b3dec>] (free_netdev) from [<c04fe6c0>] (cpsw_probe+0x9cc/0xe50)
[<c04fe6c0>] (cpsw_probe) from [<c047b28c>] (platform_drv_probe+0x5c/0xc0)

Fixes: d9ba8f9e62 ("driver: net: ethernet: cpsw: dual emac interface
implementation")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 13:48:53 -05:00
Johan Hovold 8cbcc466fd net: ethernet: ti: cpsw: fix of_node and phydev leaks
Make sure to drop references taken and deregister devices registered
during probe on probe errors (including deferred probe) and driver
unbind.

Specifically, PHY of-node references were never released and fixed-link
PHY devices were never deregistered.

Fixes: 9e42f71526 ("drivers: net: cpsw: add phy-handle parsing")
Fixes: 1f71e8c96f ("drivers: net: cpsw: Add support for fixed-link
PHY")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 13:48:53 -05:00
Johan Hovold a4e32b0d0a net: ethernet: ti: cpsw: fix deferred probe
Make sure to deregister all child devices also on probe errors to avoid
leaks and to fix probe deferral:

cpsw 4a100000.ethernet: omap_device: omap_device_enable() called from invalid state 1
cpsw 4a100000.ethernet: use pm_runtime_put_sync_suspend() in driver?
cpsw: probe of 4a100000.ethernet failed with error -22

Add generic helper to undo the effects of cpsw_probe_dt(), which will
also be used in a follow-on patch to fix further leaks that have been
introduced more recently.

Note that the platform device is now runtime-resumed before registering
any child devices in order to make sure that it is synchronously
suspended after having deregistered the children in the error path.

Fixes: 1fb19aa730 ("net: cpsw: Add parent<->child relation support
between cpsw and mdio")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 13:48:53 -05:00
Johan Hovold 86e1d5adce net: ethernet: ti: cpsw: fix mdio device reference leak
Make sure to drop the reference taken by of_find_device_by_node() when
looking up an mdio device from a phy_id property during probe.

Fixes: 549985ee9c ("cpsw: simplify the setup of the register
pointers")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 13:48:52 -05:00
Johan Hovold c46ab7e08c net: ethernet: ti: cpsw: fix bad register access in probe error path
Make sure to keep the platform device runtime-resumed throughout probe
to avoid accessing the CPSW registers in the error path (e.g. for
deferred probe) with clocks disabled:

Unhandled fault: external abort on non-linefetch (0x1008) at 0xd0872d08
...
[<c04fabcc>] (cpsw_ale_control_set) from [<c04fb8b4>] (cpsw_ale_destroy+0x2c/0x44)
[<c04fb8b4>] (cpsw_ale_destroy) from [<c04fea58>] (cpsw_probe+0xbd0/0x10c4)
[<c04fea58>] (cpsw_probe) from [<c047b2a0>] (platform_drv_probe+0x5c/0xc0)

Fixes: df828598a7 ("netdev: driver: ethernet: Add TI CPSW driver")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 13:48:52 -05:00
Jeremy Linton 06ba3b2133 net: sky2: Fix shutdown crash
The sky2 frequently crashes during machine shutdown with:

sky2_get_stats+0x60/0x3d8 [sky2]
dev_get_stats+0x68/0xd8
rtnl_fill_stats+0x54/0x140
rtnl_fill_ifinfo+0x46c/0xc68
rtmsg_ifinfo_build_skb+0x7c/0xf0
rtmsg_ifinfo.part.22+0x3c/0x70
rtmsg_ifinfo+0x50/0x5c
netdev_state_change+0x4c/0x58
linkwatch_do_dev+0x50/0x88
__linkwatch_run_queue+0x104/0x1a4
linkwatch_event+0x30/0x3c
process_one_work+0x140/0x3e0
worker_thread+0x60/0x44c
kthread+0xdc/0xf0
ret_from_fork+0x10/0x50

This is caused by the sky2 being called after it has been shutdown.
A previous thread about this can be found here:

https://lkml.org/lkml/2016/4/12/410

An alternative fix is to assure that IFF_UP gets cleared by
calling dev_close() during shutdown. This is similar to what the
bnx2/tg3/xgene and maybe others are doing to assure that the driver
isn't being called following _shutdown().

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-11-18 13:40:36 -05:00
Trond Myklebust 3e7dfb1659 NFSv4: Fix CLOSE races with OPEN
If the reply to a successful CLOSE call races with an OPEN to the same
file, we can end up scribbling over the stateid that represents the
new open state.
The race looks like:

  Client				Server
  ======				======

  CLOSE stateid A on file "foo"
					CLOSE stateid A, return stateid C
  OPEN file "foo"
					OPEN "foo", return stateid B
  Receive reply to OPEN
  Reset open state for "foo"
  Associate stateid B to "foo"

  Receive CLOSE for A
  Reset open state for "foo"
  Replace stateid B with C

The fix is to examine the argument of the CLOSE, and check for a match
with the current stateid "other" field. If the two do not match, then
the above race occurred, and we should just ignore the CLOSE.

Reported-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-11-18 13:35:58 -05:00
Trond Myklebust 23ea44c215 NFSv4.1: Fix a regression in DELEGRETURN
We don't want to call nfs4_free_revoked_stateid() in the case where
the delegreturn was successful.

Reported-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-11-18 13:35:54 -05:00
Linus Torvalds c1717701be sound fixes for 4.9-rc6
Three trivial fixes: a regression fix for ASRock mobo, a
 use-after-free fix at hot-unplug of USB-audio, and a quirk for new
 Thinkpad models.
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Merge tag 'sound-4.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Three trivial fixes:

  A regression fix for ASRock mobo, a use-after-free fix at hot-unplug
  of USB-audio, and a quirk for new Thinkpad models"

* tag 'sound-4.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: usb-audio: Fix use-after-free of usb_device at disconnect
  ALSA: hda - Fix mic regression by ASRock mobo fixup
  ALSA: hda - add a new condition to check if it is thinkpad
2016-11-18 08:56:47 -08:00
Linus Torvalds bd2bc2b8e6 GPIO fixes for the v4.9 series:
- Finally, after being puzzled by a bunch of recurrent UML
   build failures on randconfigs from the build robot, Keno
   Fischer nailed it: GPIO_DEVRES is optional and depends on
   HAS_IOMEM even though many users just unconditionally rely
   on it to be available. And it *should* be available:
   garbage collection is nice for this and it *certainly* has
   nothing to do with having IOMEM. So we got rid of it, and
   now the UML builds should JustWork(TM).
 
 - Do not call .get_direction() on sleeping GPIO chips on the
   fastpath when locking GPIOs for interrupts: it is done
   from atomic context, no way.
 
 - Some driver fixes.
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Merge tag 'gpio-v4.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull GPIO fixes from Linus Walleij:
 "These are hopefully the last GPIO fixes for v4.9. The most important
  is that it fixes the UML randconfig builds that have been nagging me
  for some time and me being confused about where the problem was really
  sitting, now this fix give this nice feeling that everything is solid
  and builds fine.

  Summary:

   - Finally, after being puzzled by a bunch of recurrent UML build
     failures on randconfigs from the build robot, Keno Fischer nailed
     it: GPIO_DEVRES is optional and depends on HAS_IOMEM even though
     many users just unconditionally rely on it to be available. And it
     *should* be available: garbage collection is nice for this and it
     *certainly* has nothing to do with having IOMEM. So we got rid of
     it, and now the UML builds should JustWork(TM).

   - Do not call .get_direction() on sleeping GPIO chips on the fastpath
     when locking GPIOs for interrupts: it is done from atomic context,
     no way.

   - Some driver fixes"

* tag 'gpio-v4.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: Remove GPIO_DEVRES option
  gpio: tc3589x: fix up .get_direction()
  gpio: do not double-check direction on sleeping chips
  gpio: pca953x: Move memcpy into mutex lock for set multiple
  gpio: pca953x: Fix corruption of other gpios in set_multiple.
2016-11-18 08:47:47 -08:00
Linus Torvalds 12b70ec0d3 i915 fixes + 2 mediatek regressions
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Merge tag 'drm-fixes-for-v4.9-rc6-brown-paper-bag' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "i915 fixes + 2 mediatek regressions.

  So some i915 fixes came in which I thought they might so I'm sending
  those along with two reverts for two patches to the mediatek driver
  that didn't seem to build so well, I've fixed up my -fixes ARM build
  and .config so I could see it, but yes brown paper bag time"

* tag 'drm-fixes-for-v4.9-rc6-brown-paper-bag' of git://people.freedesktop.org/~airlied/linux:
  Revert "drm/mediatek: set vblank_disable_allowed to true"
  Revert "drm/mediatek: fix a typo of OD_CFG to OD_RELAYMODE"
  drm/i915: Assume non-DP++ port if dvo_port is HDMI and there's no AUX ch specified in the VBT
  drm/i915: Refresh that status of MST capable connectors in ->detect()
  drm/i915: Grab the rotation from the passed plane state for VLV sprites
  drm/i915: Mark CPU cache as dirty when used for rendering
2016-11-18 08:22:48 -08:00
Greg Kroah-Hartman c0da038d7a USB-serial fixes for v4.9-rc6
Here are a couple of new device ids.
 
 Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for v4.9-rc6

Here are a couple of new device ids.

Signed-off-by: Johan Hovold <johan@kernel.org>
2016-11-18 15:49:31 +01:00
Herbert Xu a8348bca29 crypto: algif_hash - Fix NULL hash crash with shash
Recently algif_hash has been changed to allow null hashes.  This
triggers a bug when used with an shash algorithm whereby it will
cause a crash during the digest operation.

This patch fixes it by avoiding the digest operation and instead
doing an init followed by a final which avoids the buggy code in
shash.

This patch also ensures that the result buffer is freed after an
error so that it is not returned as a genuine hash result on the
next recv call.

The shash/ahash wrapper code will be fixed later to handle this
case correctly.

Fixes: 493b2ed3f7 ("crypto: algif_hash - Handle NULL hashes correctly")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Tested-by: Laura Abbott <labbott@redhat.com>
2016-11-18 22:34:10 +08:00
Michael Walle b0921d5c9e mmc: sdhci-of-esdhc: fixup PRESENT_STATE read
Since commit 87a18a6a56 ("mmc: mmc: Use ->card_busy() to detect busy
cards in __mmc_switch()") the ESDHC driver is broken:
  mmc0: Card stuck in programming state! __mmc_switch
  mmc0: error -110 whilst initialising MMC card

Since this commit __mmc_switch() uses ->card_busy(), which is
sdhci_card_busy() for the esdhc driver. sdhci_card_busy() uses the
PRESENT_STATE register, specifically the DAT0 signal level bit. But the
ESDHC uses a non-conformant PRESENT_STATE register, thus a read fixup is
required to make the driver work again.

Signed-off-by: Michael Walle <michael@walle.cc>
Fixes: 87a18a6a56 ("mmc: mmc: Use ->card_busy() to detect busy cards in __mmc_switch()")
Acked-by: Yangbo Lu <yangbo.lu@nxp.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: <stable@vger.kernel.org> # v4.8+
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2016-11-18 14:41:47 +01:00
Greg Kroah-Hartman 268200bcaf usb: fixes for v4.9-rc5
One single fix for FunctionFS to make sure we're checking
 ffs_func_req_match()'s return code correctly.
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Merge tag 'fixes-for-v4.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus

Felipe writes:

usb: fixes for v4.9-rc5

One single fix for FunctionFS to make sure we're checking
ffs_func_req_match()'s return code correctly.
2016-11-18 13:43:49 +01:00
Aneesh Kumar K.V cac4a18540 powerpc/mm: Fix missing update of HID register on secondary CPUs
We need to update on secondaries for the selected MMU mode.

Fixes: ad410674f5 ("powerpc/mm: Update the HID bit when switching from radix to hash")
Reported-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-18 23:16:58 +11:00
Felix Hädicke 05e78c6933 usb: gadget: f_fs: fix wrong parenthesis in ffs_func_req_match()
Properly check the return code of ffs_func_revmap_intf() and
ffs_func_revmap_ep() for a non-negative value.

Instead of checking the return code, the comparison was performed for the last
parameter of the function calls, because of wrong parenthesis.

This also fixes the following static checker warning:
drivers/usb/gadget/function/f_fs.c:3152 ffs_func_req_match()
warn: always true condition '(((creq->wIndex)) >= 0) => (0-u16max >= 0)'

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felix Hädicke <felixhaedicke@web.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
2016-11-18 13:50:37 +02:00
Wei Huang b112c84a6f KVM: arm64: Fix the issues when guest PMCCFILTR is configured
KVM calls kvm_pmu_set_counter_event_type() when PMCCFILTR is configured.
But this function can't deals with PMCCFILTR correctly because the evtCount
bits of PMCCFILTR, which is reserved 0, conflits with the SW_INCR event
type of other PMXEVTYPER<n> registers. To fix it, when eventsel == 0, this
function shouldn't return immediately; instead it needs to check further
if select_idx is ARMV8_PMU_CYCLE_IDX.

Another issue is that KVM shouldn't copy the eventsel bits of PMCCFILTER
blindly to attr.config. Instead it ought to convert the request to the
"cpu cycle" event type (i.e. 0x11).

To support this patch and to prevent duplicated definitions, a limited
set of ARMv8 perf event types were relocated from perf_event.c to
asm/perf_event.h.

Cc: stable@vger.kernel.org # 4.6+
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Wei Huang <wei@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-11-18 09:06:58 +00:00
Wei Huang 9e3f7a2969 arm64: KVM: pmu: Fix AArch32 cycle counter access
We're missing the handling code for the cycle counter accessed
from a 32bit guest, leading to unexpected results.

Cc: stable@vger.kernel.org # 4.6+
Signed-off-by: Wei Huang <wei@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2016-11-18 09:02:04 +00:00
Janakarajan Natarajan e40ed1542d perf/x86: Add perf support for AMD family-17h processors
This patch enables perf core PMU support for the new AMD family-17h processors.

In family-17h, there is no PMC-event constraint. All events, irrespective of
the type, can be measured using any of the six generic performance counters.

Signed-off-by: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Acked-by: Borislav Petkov <bp@suse.de>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1479399306-13375-1-git-send-email-Janakarajan.Natarajan@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-18 09:45:57 +01:00
Josh Poimboeuf 91e08ab0c8 x86/dumpstack: Prevent KASAN false positive warnings
The oops stack dump code scans the entire stack, which can cause KASAN
"stack-out-of-bounds" false positive warnings.  Tell KASAN to ignore it.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: davej@codemonkey.org.uk
Cc: dvyukov@google.com
Link: http://lkml.kernel.org/r/5f6e80c4b0c7f7f0b6211900847a247cdaad753c.1479398226.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-18 09:38:00 +01:00
Josh Poimboeuf c2d75e03d6 x86/unwind: Prevent KASAN false positive warnings in guess unwinder
The guess unwinder scans the entire stack, which can cause KASAN
"stack-out-of-bounds" false positive warnings.  Tell KASAN to ignore it.

Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Stephane Eranian <eranian@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: davej@codemonkey.org.uk
Cc: dvyukov@google.com
Link: http://lkml.kernel.org/r/61939c0b2b2d63ce97ba59cba3b00fd47c2962cf.1479398226.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-11-18 09:38:00 +01:00
Johannes Berg 9853a55ef1 cfg80211: limit scan results cache size
It's possible to make scanning consume almost arbitrary amounts
of memory, e.g. by sending beacon frames with random BSSIDs at
high rates while somebody is scanning.

Limit the number of BSS table entries we're willing to cache to
1000, limiting maximum memory usage to maybe 4-5MB, but lower
in practice - that would be the case for having both full-sized
beacon and probe response frames for each entry; this seems not
possible in practice, so a limit of 1000 entries will likely be
closer to 0.5 MB.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2016-11-18 08:44:44 +01:00
Michael Neuling 96ed1fe511 powerpc/mm/radix: Invalidate ERAT on tlbiel for POWER9 DD1
On POWER9 DD1, when we do a local TLB invalidate we also need to explicitly
invalidate the ERAT.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-11-18 15:12:24 +11:00
Johannes Thumshirn 208da78e8e scsi: libfc: fix seconds_since_last_reset miscalculation
Commit 540eb1eef0 ("scsi: libfc: fix seconds_since_last_reset calculation")
removed the use of 'struct timespec' from fc_get_host_stats(). This broke the
output of 'fcoeadm -s' after kernel 4.8-rc1.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Cc: <stable@vger.kernel.org> # v4.8+
Fixes: 540eb1eef0 ("scsi: libfc: fix seconds_since_last_reset calculation")
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-11-17 20:44:51 -05:00
Wei Yongjun 68d85d0e03 i2c: digicolor: use clk_disable_unprepare instead of clk_unprepare
since clk_prepare_enable() is used to get i2c->clk, we should
use clk_disable_unprepare() to release it for the error path.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Acked-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2016-11-18 01:48:01 +01:00
Olof Johansson 9883ed4433 Allwinner fixes for 4.9
A fix to reintroduce missing pinmux options that turned out not to be
 optional.
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Merge tag 'sunxi-fixes-for-4.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into fixes

Allwinner fixes for 4.9

A fix to reintroduce missing pinmux options that turned out not to be
optional.

* tag 'sunxi-fixes-for-4.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  ARM: dts: sun8i: fix the pinmux for UART1

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-11-17 16:43:38 -08:00
Olof Johansson c28aedec50 STi DT fix:
Fix typo cs-gpio to cs-gpios
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Merge tag 'sti-dt-for-v4.9-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti into fixes

STi DT fix:

Fix typo cs-gpio to cs-gpios

* tag 'sti-dt-for-v4.9-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti:
  ARM: dts: STiH410-b2260: Fix typo in spi0 chipselect definition

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-11-17 16:38:38 -08:00
Olof Johansson d2e3cb9840 i.MX fixes for 4.9, 2nd round:
It fixes a boot failure on imx53-qsb board with a DA9053 PMIC, which is
 caused by the regulator core change, commit fa93fd4ecc ("regulator:
 core: Ensure we are at least in bounds for our constraints").
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Merge tag 'imx-fixes-4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into fixes

i.MX fixes for 4.9, 2nd round:

It fixes a boot failure on imx53-qsb board with a DA9053 PMIC, which is
caused by the regulator core change, commit fa93fd4ecc ("regulator:
core: Ensure we are at least in bounds for our constraints").

* tag 'imx-fixes-4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: dts: imx53-qsb: Fix regulator constraints

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-11-17 16:38:01 -08:00
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