linux-toradex.git/drivers, branch v3.10.2

drivers/dma/pl330.c: fix locking in pl330_free_chan_resources()

2013-07-22T01:21:35+00:00

commit da331ba8e9c5de72a27e50f71105395bba6eebe0 upstream.

tasklet_kill() may sleep so call it before taking pch->lock.

Fixes following lockup:

  BUG: scheduling while atomic: cat/2383/0x00000002
  Modules linked in:
    unwind_backtrace+0x0/0xfc
    __schedule_bug+0x4c/0x58
    __schedule+0x690/0x6e0
    sys_sched_yield+0x70/0x78
    tasklet_kill+0x34/0x8c
    pl330_free_chan_resources+0x24/0x88
    dma_chan_put+0x4c/0x50
  [...]
  BUG: spinlock lockup suspected on CPU#0, swapper/0/0
   lock: 0xe52aa04c, .magic: dead4ead, .owner: cat/2383, .owner_cpu: 1
    unwind_backtrace+0x0/0xfc
    do_raw_spin_lock+0x194/0x204
    _raw_spin_lock_irqsave+0x20/0x28
    pl330_tasklet+0x2c/0x5a8
    tasklet_action+0xfc/0x114
    __do_softirq+0xe4/0x19c
    irq_exit+0x98/0x9c
    handle_IPI+0x124/0x16c
    gic_handle_irq+0x64/0x68
    __irq_svc+0x40/0x70
    cpuidle_wrap_enter+0x4c/0xa0
    cpuidle_enter_state+0x18/0x68
    cpuidle_idle_call+0xac/0xe0
    cpu_idle+0xac/0xf0

Signed-off-by: Bartlomiej Zolnierkiewicz 
Signed-off-by: Kyungmin Park 
Acked-by: Jassi Brar 
Cc: Vinod Koul 
Cc: Tomasz Figa 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

ahci: remove pmp link online check in FBS EH

2013-07-22T01:21:31+00:00

commit 912b9ac683b112615d5605686f1dc086402ce9f7 upstream.

ata_link_online() check in ahci_error_intr() is unnecessary, it should
be removed otherwise may lead to lockup with FBS enabled PMP.
http://marc.info/?l=linux-ide&m=137050421603272&w=2

Reported-by: Yu Liu 
Signed-off-by: Shane Huang 
Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

ahci: AHCI-mode SATA patch for Intel Coleto Creek DeviceIDs

2013-07-22T01:21:31+00:00

commit 1cfc7df3de10c40ed459e13cce6de616023bf41c upstream.

This patch adds the AHCI-mode SATA DeviceIDs for the Intel Coleto Creek PCH.

Signed-off-by: Seth Heasley 
Signed-off-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

ahci: Add AMD CZ SATA device ID

2013-07-22T01:21:30+00:00

commit fafe5c3d82a470d73de53e6b08eb4e28d974d895 upstream.

To add AMD CZ SATA controller device ID of IDE mode.

[bhelgaas: drop pci_ids.h update]
Signed-off-by: Shane Huang 
Signed-off-by: Bjorn Helgaas 
Reviewed-by: Tejun Heo 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: pcie: wake the queue if stopped when being unmapped

2013-07-22T01:21:30+00:00

commit 8a487b1a7432b20ff3f82387a8ce7555a964b44e upstream.

When the queue is unmapped while it was so loaded that
mac80211's was stopped, we need to wake the queue after
having freed all the packets in the queue.
Not doing so can result in weird stuff like:

* run lots of traffic (mac80211's queue gets stopped)
* RFKILL
* de-assert RFKILL
* no traffic

Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg 
Signed-off-by: Greg Kroah-Hartman

iwlwifi: pcie: fix race in queue unmapping

2013-07-22T01:21:30+00:00

commit b967613d7e7c7bad176f5627c55e2d8c5aa2480e upstream.

When a queue is disabled, it frees all its entries. Later,
the op_mode might still get notifications from the firmware
that triggers to free entries in the tx queue. The transport
should be prepared for these races and know to ignore
reclaim calls on queues that have been disabled and whose
entries have been freed.

Signed-off-by: Emmanuel Grumbach 
Signed-off-by: Johannes Berg 
Signed-off-by: Greg Kroah-Hartman

PCI: Fix refcount issue in pci_create_root_bus() error recovery path

2013-07-22T01:21:30+00:00

commit 343df771e671d821478dd3ef525a0610b808dbf8 upstream.

After calling device_register(&bridge->dev), the bridge is reference-
counted, and it is illegal to call kfree() on it except in the release
function.

[bhelgaas: changelog, use put_device() after device_register() failure]
Signed-off-by: Jiang Liu 
Signed-off-by: Bjorn Helgaas 
Signed-off-by: Greg Kroah-Hartman

PCI: Finish SR-IOV VF setup before adding the device

2013-07-22T01:21:30+00:00

commit fbf33f516bdbcc2ab1ba1e54dfb720b0cfaa6874 upstream.

Commit 4f535093cf "PCI: Put pci_dev in device tree as early as possible"
moves device registering from pci_bus_add_devices() to pci_device_add().
That causes problems for virtual functions because device_add(&virtfn->dev)
is called before setting the virtfn->is_virtfn flag, which then causes Xen
to report PCI virtual functions as PCI physical functions.

Fix it by setting virtfn->is_virtfn before calling pci_device_add().

[Jiang Liu]: Move the setting of virtfn->is_virtfn ahead further for better
readability and modify changelog.

Signed-off-by: Xudong Hao 
Signed-off-by: Jiang Liu 
Signed-off-by: Bjorn Helgaas 
Signed-off-by: Greg Kroah-Hartman

nbd: correct disconnect behavior

2013-07-22T01:21:29+00:00

commit c378f70adbc1bbecd9e6db145019f14b2f688c7c upstream.

Currently, when a disconnect is requested by the user (via NBD_DISCONNECT
ioctl) the return from NBD_DO_IT is undefined (it is usually one of
several error codes).  This means that nbd-client does not know if a
manual disconnect was performed or whether a network error occurred.
Because of this, nbd-client's persist mode (which tries to reconnect after
error, but not after manual disconnect) does not always work correctly.

This change fixes this by causing NBD_DO_IT to always return 0 if a user
requests a disconnect.  This means that nbd-client can correctly either
persist the connection (if an error occurred) or disconnect (if the user
requested it).

Signed-off-by: Paul Clements 
Acked-by: Rob Landley 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

Input: bcm5974 - add support for the 2013 MacBook Air

2013-07-22T01:21:29+00:00

commit 148c1c8ad3c4170186ebe6ea5900adde27d2a0e7 upstream.

The June 2013 Macbook Air (13'') has a new trackpad protocol; four new
values are inserted in the header, and the mode switch is no longer
needed. This patch adds support for the new devices.

Reported-and-tested-by: Brad Ford 
Signed-off-by: Henrik Rydberg 
Signed-off-by: Dmitry Torokhov 
Signed-off-by: Greg Kroah-Hartman