Граф коммитов

456380 Коммитов

Автор SHA1 Сообщение Дата
Jason Gerecke 0b335cad73 Input: wacom - support up to 2048 pressure levels with ISDv4
Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:55:52 -07:00
Benjamin Tissoires 471d17148c Input: wacom - move the USB (now hid) Wacom driver in drivers/hid
wacom.ko is now a full HID driver, we have to move it into the proper
subdirectory: drivers/hid.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:55:38 -07:00
Benjamin Tissoires a3e6f6543d Input: wacom - keep wacom_ids ordered
No Functional changes, just some reordering.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:56 -07:00
Benjamin Tissoires 80befa9381 Input: wacom - remove field pktlen declaration in the list of devices
pktlen is now overwritten by the driver directly by reading the hid
report descriptor. There is no need to declare it statically.
We also move down the position of the field in the struct so that
we can keep the current declaration of Wacom devices.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:56 -07:00
Benjamin Tissoires 198fdee282 Input: wacom - use hidinput_calc_abs_res instead of duplicating its code
This may infer a small difference with the previous implementation
due to the DIV_ROUND_CLOSEST() in the hid implementation.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:55 -07:00
Benjamin Tissoires c669fb2b9a Input: wacom - use in-kernel HID parser
HID already parses the report descriptor, so use it instead of implementing
our own.  The special case for Bamboo PT 3rd gen is also removed and
handled in the same way Intuos 5 is treated, by hardcoding it in the
driver.  Last, the unit_exponent stored into the hid field already is
signed, so there is no need to handle a two's complement anymore.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:55 -07:00
Benjamin Tissoires e2114ce1af Input: wacom - use hid_info instead of plain dev_info
Removes one more need of usb and intf.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:54 -07:00
Benjamin Tissoires dd3181a70c Input: wacom - register power device at the HID level
Use the HID device as the parent for the power device when dealing with
a wireless receiver.
Removes one more usb dependency and does not break user space.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:53 -07:00
Benjamin Tissoires 4451e088cf Input: wacom - remove usb dependency for siblings devices
Wacom tablets can share different physical sensors on one physical device.
These are called siblings in the code. The current way of implementation
relies on the USB topology to be able to share data amongs those sensors.

We can replace the code to match a HID subsystem, without involving the USB
topology:
- the first probed sensor does not find any siblings in the list
  wacom_udev_list, so it creates its own wacom_hdev_data with its own
  struct hid_device
- the other sensor checks the current list of siblings in wacom_hdev_data,
  and if there is a match, it associates itself to the matched device.

To be sure that we are not associating different sensors from different
physical devices, we also check for the phys path of the hid device which
contains the USB topology.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:53 -07:00
Benjamin Tissoires b6c79f2ca1 Input: wacom - register the input devices on top of the HID one
Matches the current behavior of the HID subsystem and removes one more
dependency over USB.

The current user space clients which relies on this to fetch the
LEDs path need an update. However, we already break them in the
kernel v3.11 for the Bluetooth Wacom devices. They are going to be fixed
soon.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:52 -07:00
Benjamin Tissoires c31a408f7a Input: wacom - install LED/OLED sysfs files in the HID device instead of USB
Removes one more dependency over USB, but requires some changes in
the user space to find the sysfs files correctly.

This patch breaks the user space. However, the number of program
accessing the LEDs is quite limited and we can easily patch them
to handle the new HID behavior.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:52 -07:00
Benjamin Tissoires 01c846f953 Input: wacom - compute the HID report size to get the actual packet size
This removes an USB dependency and is more accurate: the computed pktlen
is the actual maximum size of the reports forwarded by the device.

Given that the pktlen is correctly computed/validated, we can store it now
in the features struct instead of having a special handling in the rest of
the code.

Likewise, this information is not mandatory anymore in the description
of devices in wacom_wac.c. They will be removed in a separate patch.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:51 -07:00
Benjamin Tissoires ba9a3541fb Input: wacom - use HID core to actually fetch the report descriptor
HID core already retrieves the report descritor. There is no need
to ask ourself for one.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:51 -07:00
Benjamin Tissoires 27b20a9dec Input: wacom - use hid communication instead of plain usb
Wacom.ko was a plain USB driver for a HID device. The communications
from/to the devices can actually be replaced with the HID API.

At the USB level, the reports are exactly the same.

This will allow to use uhid virtual devices instead of true USB devices.
This step is necessary to implement regression tests.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:50 -07:00
Benjamin Tissoires 29b4739134 Input: wacom - switch from an USB driver to a HID driver
All USB Wacom tablets are actually HID devices.
For historical reasons, they are handled as plain USB devices.
The current code makes more and more reference to the HID subsystem
like implementing its own HID report descriptor parser to handle new
devices.

From the user point of view, we can transparently switch from this state
to a driver handled in the HID subsystem and clean up a lot of USB specific
code in the wacom.ko driver.

The other benefit once the USB dependecies have been removed is that we can
use a tool like uhid to make regression tests and allow further cleanup or
new implementations without risking breaking current behaviors.

To match the current handling of devices in wacom_wac.c, we rely on the
hid_type set by usbhid. usbhid sets the hid_type to HID_TYPE_USBMOUSE when
it sees a USB boot mouse protocol declared and HID_TYPE_USBNONE when the
device is plain HID. There is thus a one to one matching between the list
of supported devices before and after the switch from USB to HID.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:50 -07:00
Benjamin Tissoires f54bc61cf7 Input: wacom - include and use linux/hid.h
The current wacom code redefines constants that are already in linux/hid.h
This patch includes the official implementation and use it accross the code.

There is a conflict with HID_USAGE and others at the same level:
- in the wacom.ko implementation, those are the #define regarding the
  value of the field in the report descriptor
- in the hid.h, those are bitmask
So add HDESC_ in their current definition.

Also, the struct hid_descriptor slightly differs from the linux/hid.h
point of view, so mark it as custom for this driver.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:49 -07:00
Benjamin Tissoires 008f4d9e3c Input: wacom - split out the pad device for the wireless receiver
The Wireless Receiver should also behave in the same way than regular
USB devices.

To simplify the unregistering of the different devices,
wacom_unregister_inputs() is introduced.
For consistency, the function wacom_register_input() is renamed into
wacom_register_inputs().

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:49 -07:00
Benjamin Tissoires 3813810c71 Input: wacom - split out the pad device for Graphire G4 and MO
MSC_SERIAL can be safely removed from pad devices. If it is not
here, xf86-input-wacom correctly generates ones for its internal
use.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:48 -07:00
Benjamin Tissoires 422b0314b9 Input: wacom - split out the pad device for DTUS
MSC_SERIAL can be safely removed from the pad device.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:48 -07:00
Benjamin Tissoires 3116871f42 Input: wacom - split out the pad device for Bamboos
We rely on the return code of wacom_bpt*() to do the input_sync().
wacom_wac_irq() then properly sync the input devices.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:47 -07:00
Benjamin Tissoires 10059cdc0a Input: wacom - split out the pad device for Intuos/Cintiq
MSC_SERIAL can be safely dropped for pad input devices.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:47 -07:00
Benjamin Tissoires d2d13f18aa Input: wacom - create a separate input device for pads
Currently, the pad events are sent through the stylus input device
for the Intuos/Cintiqs, and through the touch input device for the
Bamboos.

To differentiate the buttons pressed on the pad from the ones pressed
on the stylus, the Intuos/Cintiq uses MISC_SERIAL and ABS_MISC. This
lead to a multiplexing of the events into one device, which are then
splitted out in xf86-input-wacom. Bamboos are not using MISC events
because the pad is attached to the touch interface, and only BTN_TOUCH
is used for the finger (and DOUBLE_TAP, etc...). However, the user space
driver still splits out the pad from the touch interface in the same
way it does for the pro line devices.

The other problem we can see with this fact is that some of the Intuos
and Cintiq have a wheel, and the effective range of the reported values
is [0..71]. Unfortunately, the airbrush stylus also sends wheel events
(there is a small wheel on it), but in the range [0..1023]. From the user
space point of view it is kind of difficult to understand that because
the wheel on the pad are quite common, while the airbrush tool is not.

A solution to fix all of these problems is to split out the pad device
from the stylus/touch. This decision makes more sense because the pad is
not linked to the absolute position of the finger or pen, and usually, the
events from the pad are filtered out by the compositor, which then convert
them into actions or keyboard shortcuts.

For backward compatibility with current xf86-input-wacom, the pad devices
still present the ABS_X, ABS_Y and ABS_MISC events, but they can be
completely ignored in the new implementation.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:46 -07:00
Benjamin Tissoires 7097d4cb59 Input: wacom - assign phys field from struct wacom into input_dev
This field was not used for 9 years, it is time to assign it.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:45 -07:00
Benjamin Tissoires 3cb83157e8 Input: Revert "wacom - testing result shows get_report is unnecessary."
This reverts commit 1b2faaf7e2.

The Intuos4 series presents a bug in which it hangs if it receives
a set feature command while switching to the enhanced mode.
This bug is triggered when plugging an Intuos 4 while having
a gnome user session up and running.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Aristeu Rozanski <aris@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-07-25 18:53:45 -07:00
Linus Torvalds 9a3c4145af Linux 3.16-rc6 2014-07-20 21:04:16 -07:00
Linus Torvalds b7a68369ea Staging fixes for 3.16-rc6
Here are 2 IIO driver fixes for 3.16-rc6 that resolve some reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iEYEABECAAYFAlPMHxEACgkQMUfUDdst+ymCLgCfe5O5VyAnDYpmnykiJYFIoKOG
 f50AoJJEPSMi2chNap5zUlcr+XfcALhG
 =VS0g
 -----END PGP SIGNATURE-----

Merge tag 'staging-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull more IIO driver fixes from Greg KH:
 "Here are two IIO driver fixes for 3.16-rc6 that resolve some reported
  issues"

* tag 'staging-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  iio: mma8452: Use correct acceleration units.
  iio:core: Handle error when mask type is not separate
2014-07-20 20:44:53 -07:00
Linus Torvalds caa7c4e172 USB fixes for 3.16-rc6
Here are 2 USB patches that resolve some reported issues, one with an
 odd HUB, and one in the chipidea driver.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iEYEABECAAYFAlPMHpMACgkQMUfUDdst+ymQIQCeOK2oC0C5h1P7HHAQ4UiGpSgt
 MHwAoJfAeqF77RajND+m4ds6hwc5h8IF
 =ufek
 -----END PGP SIGNATURE-----

Merge tag 'usb-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are two USB patches that resolve some reported issues, one with
  an odd HUB, and one in the chipidea driver"

* tag 'usb-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: Check if port status is equal to RxDetect
  usb: chipidea: udc: Disable auto ZLP generation on ep0
2014-07-20 20:44:18 -07:00
Linus Torvalds f47d5bb02e driver core fix for 3.16-rc6
Here is a single driver core fix that reverts an older patch that has
 been causing a number of reported problems with the platform devices.
 
 This revert has been in linux-next for a while with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iEYEABECAAYFAlPMHSoACgkQMUfUDdst+ymu9QCg0cfc2t+rsUtIO6rPPCRn6ikf
 nT8Anjc5NGwDE4lpKBfyKXX41RsPpUBN
 =+PxC
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core fix from Greg KH:
 "Here is a single driver core fix that reverts an older patch that has
  been causing a number of reported problems with the platform devices.

  This revert has been in linux-next for a while with no reported issues"

* tag 'driver-core-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  platform_get_irq: Revert to platform_get_resource if of_irq_get fails
2014-07-20 20:43:46 -07:00
Linus Torvalds fa24615f4c char/misc fix for 3.16-rc6
Here's a single hyper-v driver fix for a reported issue.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2
 
 iEYEABECAAYFAlPMHJ8ACgkQMUfUDdst+ynYSwCcDDBYUiSyLA5K7yGXnzIk1+9A
 Hx0An0px2gQKVAICjZ0toVWmlrAgVGUG
 =vNMw
 -----END PGP SIGNATURE-----

Merge tag 'char-misc-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc fix from Greg KH:
 "Here's a single hyper-v driver fix for a reported issue"

* tag 'char-misc-3.16-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  Drivers: hv: hv_fcopy: fix a race condition for SMP guest
2014-07-20 20:43:14 -07:00
Linus Torvalds 5556ea4df6 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull intel drm fixes from Dave Airlie:
 "Intel fixes came in late, but since I debugged one of them I'll send
  them on,

  Two reverts, a quirk and one warn regression"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  Revert "drm/i915: reverse dp link param selection, prefer fast over wide again"
  drm/i915: Track the primary plane correctly when reassigning planes
  drm/i915: Ignore VBT backlight presence check on HP Chromebook 14
  Revert "drm/i915: Don't set the 8to6 dither flag when not scaling"
2014-07-20 20:39:28 -07:00
Linus Torvalds cfad81ce28 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML fixes from Richard Weinberger:
 "Four fixes, all discovered by Trinity"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
  um: segv: Save regs only in case of a kernel mode fault
  um: Fix hung task in fix_range_common()
  um: Ensure that a stub page cannot get unmapped
  Revert "um: Fix wait_stub_done() error handling"
2014-07-20 20:28:04 -07:00
Linus Torvalds da83fc6e0f Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
 "We have two more fixes in my for-linus branch.

  I was hoping to also include a fix for a btrfs deadlock with
  compression enabled, but we're still nailing that one down"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: test for valid bdev before kobj removal in btrfs_rm_device
  Btrfs: fix abnormal long waiting in fsync
2014-07-20 20:21:05 -07:00
Linus Torvalds 90d51d5606 NFS client fixes for Linux 3.16
Highlights include;
 - Stable fix for an NFSv3 posix ACL regression
 - Multiple fixes for regressions to the NFS generic read/write code
   - Fix page splitting bugs that come into play when a small rsize/wsize
     read/write needs to be sent again (due to error conditions or page
     redirty).
   - Fix nfs_wb_page_cancel, which is called by the "invalidatepage" method
 - Fix 2 compile warnings about unused variables.
 - Fix a performance issue affecting unstable writes.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJTys5JAAoJEGcL54qWCgDygakP/1JOfQZzyHNRml5aDVRLtfp/
 QQpn8ne3jjEov+0BhzSxqkpHP+8fCcF0UgD5asEnbM83ruoB8EUHErXdq7kRkAYf
 COpDZAww4sPXUszG/xGqIED503DKbf69Ds5pQMh8g71hfQpw04UmMQYbnRNBP2bI
 Z5eu0Xiwaf3MVRaxHMXVy9sl7in/cQBvrXnKLTIYOLA0U5bdCI9JWT5+qbOUCC/3
 YuYm5EjM+OMyhvEWyVDXFp9kmw0vtBS8FwAXYKBjwfJLNl8dGuERWKlFDPNOxdpZ
 QrOBhUH73d2tgvTHzUg/RRtpA6mKOfznU3SQK3muP188/2/sbb4y/RChwv+Ignat
 YqWFgbDTz1idKvjj+Vzcd7eL3HO9Kono/YkAG8i5xmOlSeenzDra1lDAbuB+zNzd
 oLVY1AJp8+13c74gaCDurxJ7fq6Fth97eqxdo8fdQH8Mn6m6qRm2V57rOo59eFQS
 bX6EN4ja8ashrKprCvlhXDGJmQKZWJMEGoTXJCj5w+HBklONV6jdbyzGFKT+Zmhg
 IP+USsaLJDswZNpdWq8Zb9RthfFAURKEQEemwV5eLQNtTa+xQ22ZOF2ycrbBqsED
 etCCm8gyNukl2RCAxGfLrtpBytlcNMmcRKGktKqO1SAAua3IP33wGD7zql8rwGCZ
 m9XMXUkVKiHoErl3jZ4T
 =qklz
 -----END PGP SIGNATURE-----

Merge tag 'nfs-for-3.16-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client fixes from Trond Myklebust:
 "Apologies for the relative lateness of this pull request, however the
  commits fix some issues with the NFS read/write code updates in
  3.16-rc1 that can cause serious Oopsing when using small r/wsize.  The
  delay was mainly due to extra testing to make sure that the fixes
  behave correctly.

  Highlights include;
   - Stable fix for an NFSv3 posix ACL regression
   - Multiple fixes for regressions to the NFS generic read/write code:
     - Fix page splitting bugs that come into play when a small
       rsize/wsize read/write needs to be sent again (due to error
       conditions or page redirty)
     - Fix nfs_wb_page_cancel, which is called by the "invalidatepage"
       method
   - Fix 2 compile warnings about unused variables
   - Fix a performance issue affecting unstable writes"

* tag 'nfs-for-3.16-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS: Don't reset pg_moreio in __nfs_pageio_add_request
  NFS: Remove 2 unused variables
  nfs: handle multiple reqs in nfs_wb_page_cancel
  nfs: handle multiple reqs in nfs_page_async_flush
  nfs: change find_request to find_head_request
  nfs: nfs_page should take a ref on the head req
  nfs: mark nfs_page reqs with flag for extra ref
  nfs: only show Posix ACLs in listxattr if actually present
2014-07-20 19:55:44 -07:00
Richard Weinberger bb6a1b2e18 um: segv: Save regs only in case of a kernel mode fault
...otherwise me lose user mode regs and the resulting
stack trace is useless.

Signed-off-by: Richard Weinberger <richard@nod.at>
2014-07-20 13:39:27 +02:00
Richard Weinberger 468f65976a um: Fix hung task in fix_range_common()
If do_ops() fails we have to release current->mm->mmap_sem
otherwise the failing task will never terminate.

Reported-by: Toralf Förster <toralf.foerster@gmx.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
2014-07-20 13:16:20 +02:00
Richard Weinberger 284e6d3951 um: Ensure that a stub page cannot get unmapped
Trinity discovered an execution path such that a task
can unmap his stub page.

Reported-by: Toralf Förster <toralf.foerster@gmx.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
2014-07-20 13:09:15 +02:00
Richard Weinberger ae5db6d123 Revert "um: Fix wait_stub_done() error handling"
This reverts commit 0974a9cadc.
The real for for that issue is to release current->mm->mmap_sem in
fix_range_common().

Signed-off-by: Richard Weinberger <richard@nod.at>
2014-07-20 12:56:34 +02:00
Eric Sandeen 0bfaa9c5cb btrfs: test for valid bdev before kobj removal in btrfs_rm_device
commit 99994cd btrfs: dev delete should remove sysfs entry
added a btrfs_kobj_rm_device, which dereferences device->bdev...
right after we check whether device->bdev might be NULL.

I don't honestly know if it's possible to have a NULL device->bdev
here, but assuming that it is (given the test), we need to move
the kobject removal to be under that test.

(Coverity spotted this)

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Chris Mason <clm@fb.com>
2014-07-19 11:49:44 -07:00
Liu Bo 98ce2deda2 Btrfs: fix abnormal long waiting in fsync
xfstests generic/127 detected this problem.

With commit 7fc34a62ca, now fsync will only flush
data within the passed range.  This is the cause of the above problem,
-- btrfs's fsync has a stage called 'sync log' which will wait for all the
ordered extents it've recorded to finish.

In xfstests/generic/127, with mixed operations such as truncate, fallocate,
punch hole, and mapwrite, we get some pre-allocated extents, and mapwrite will
mmap, and then msync.  And I find that msync will wait for quite a long time
(about 20s in my case), thanks to ftrace, it turns out that the previous
fallocate calls 'btrfs_wait_ordered_range()' to flush dirty pages, but as the
range of dirty pages may be larger than 'btrfs_wait_ordered_range()' wants,
there can be some ordered extents created but not getting corresponding pages
flushed, then they're left in memory until we fsync which runs into the
stage 'sync log', and fsync will just wait for the system writeback thread
to flush those pages and get ordered extents finished, so the latency is
inevitable.

This adds a flush similar to btrfs_start_ordered_extent() in
btrfs_wait_logged_extents() to fix that.

Reviewed-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
2014-07-19 11:49:44 -07:00
Linus Torvalds d057190925 Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner:
 "The locking department delivers:

   - A rather large and intrusive bundle of fixes to address serious
     performance regressions introduced by the new rwsem / mcs
     technology.  Simpler solutions have been discussed, but they would
     have been ugly bandaids with more risk than doing the right thing.

   - Make the rwsem spin on owner technology opt-in for architectures
     and enable it only on the known to work ones.

   - A few fixes to the lockdep userspace library"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/rwsem: Add CONFIG_RWSEM_SPIN_ON_OWNER
  locking/mutex: Disable optimistic spinning on some architectures
  locking/rwsem: Reduce the size of struct rw_semaphore
  locking/rwsem: Rename 'activity' to 'count'
  locking/spinlocks/mcs: Micro-optimize osq_unlock()
  locking/spinlocks/mcs: Introduce and use init macro and function for osq locks
  locking/spinlocks/mcs: Convert osq lock to atomic_t to reduce overhead
  locking/spinlocks/mcs: Rename optimistic_spin_queue() to optimistic_spin_node()
  locking/rwsem: Allow conservative optimistic spinning when readers have lock
  tools/liblockdep: Account for bitfield changes in lockdeps lock_acquire
  tools/liblockdep: Remove debug print left over from development
  tools/liblockdep: Fix comparison of a boolean value with a value of 2
2014-07-19 06:27:55 -10:00
Linus Torvalds d1743b810d Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
 "Prevent a possible divide by zero in the debugging code"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched: Fix possible divide by zero in avg_atom() calculation
2014-07-19 06:26:43 -10:00
Linus Torvalds cb20fd0779 Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
 "Three patches addressing shortcomings in the ARM gic interrupt chip
  driver"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip: gic: Fix core ID calculation when topology is read from DT
  irqchip: gic: Add binding probe for ARM GIC400
  irqchip: gic: Add support for cortex a7 compatible string
2014-07-19 06:26:01 -10:00
Linus Torvalds b495c23cd4 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
 "A single fix for a long standing issue in the alarm timer subsystem,
  which was noticed recently when people finally started to use alarm
  timers for serious work"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  alarmtimer: Fix bug where relative alarm timers were treated as absolute
2014-07-19 06:25:03 -10:00
Linus Torvalds da5b99b454 Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull RCU fixes from Thomas Gleixner:
 "Two RCU patches:
   - Address a serious performance regression on open/close caused by
     commit ac1bea8578 ("Make cond_resched() report RCU quiescent
     states")
   - Export RCU debug functions.  Not a regression, but enablement to
     address a serious recursion bug in the sl*b allocators in 3.17"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  rcu: Reduce overhead of cond_resched() checks for RCU
  rcu: Export debug_init_rcu_head() and and debug_init_rcu_head()
2014-07-19 06:23:27 -10:00
Linus Torvalds d614cb0bc3 ARM: SoC fixes for 3.16-rc
A smaller set of fixes this week, and all regression fixes:
  - a handful of issues fixed on at91 with common clock conversion
  - a set of fixes for Marvell mvebu (SMP, coherency, PM)
  - a clock fix for i.MX6Q.
  - ... and a SMP/hotplug fix for Exynos
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1.4.14 (GNU/Linux)
 
 iQIcBAABAgAGBQJTygXeAAoJEIwa5zzehBx3bt0P/2ofpoOuYRV88sHjI9w+0R+F
 6t8WIFtTSFypI3zD6cSFBR38wTHI4mJ/jBb0ZnIhGXZE3Bzl/n9Moz7UElxsDD9v
 AjMWzyx6XrSJSCATczN/CDMX38QN+0NZW+hdXODGz9g7DrVGT/Z2jqugkaPAkAwy
 gVBmCqa+nkksfQCcQF3LDVmCyDUMHKILfUvyQJ217QbIavxO3kU/2wLdgEQpUCrI
 YUWAnAj+S/xoxd6OYJr9nMd+M6P9nkRdy+dD56nJtSiZdFwFoI+EgfhUkT3iezPN
 q3aYg3GbgiM/Fp8IO58tE2CbbG/xWJH+kwkJ03yl3z1Gx2KqAYeBpy2QMLBR9rUf
 F0axul3EeW9Gf7OEEFKQbCW8ETaP2AMEbm11FZkjJxMlNjbG9zkYFnl0oedLXxTA
 AcOPB7ABIWU1PsXXTqD9ZxjZmAsKL4CCck0BnWdOyQT5c9gA4ePEGEDMjeT/OiZE
 QwlujHFl4M4E1XFJRL6RiBYppNLBKTsrgl+HaoDSW/MbD350WqbOFTzngw9Xy/rO
 n7YNxUR2QFfWCNY1Zk8J8oJI/ISxla2bthhIe0+l/kk/zVUM3OMEClp0Fdw/L55X
 Md/fc7FzQKV9GPhtSz1RGDN4bjdJuGmitjMrYf+YhbWHa6iKS3XkkHBNpkKhY8Kf
 h9MsTmjd0En4BJLUqf0h
 =LOtI
 -----END PGP SIGNATURE-----

Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A smaller set of fixes this week, and all regression fixes:
   - a handful of issues fixed on at91 with common clock conversion
   - a set of fixes for Marvell mvebu (SMP, coherency, PM)
   - a clock fix for i.MX6Q.
   - ... and a SMP/hotplug fix for Exynos"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: EXYNOS: Fix core ID used by platsmp and hotplug code
  ARM: at91/dt: add missing clocks property to pwm node in sam9x5.dtsi
  ARM: at91/dt: fix usb0 clocks definition in sam9n12 dtsi
  ARM: at91: at91sam9x5: correct typo error for ohci clock
  ARM: clk-imx6q: parent lvds_sel input from upstream clock gates
  ARM: mvebu: Fix coherency bus notifiers by using separate notifiers
  ARM: mvebu: Fix the operand list in the inline asm of armada_370_xp_pmsu_idle_enter
  ARM: mvebu: fix SMP boot for Armada 38x and Armada 375 Z1 in big endian
2014-07-18 20:49:47 -10:00
Dave Airlie e898c791e1 Merge tag 'drm-intel-fixes-2014-07-18' of git://anongit.freedesktop.org/drm-intel
But in any case nothing really shocking in
here, 2 reverts, 1 quirk and a regression fix a WARN.

* tag 'drm-intel-fixes-2014-07-18' of git://anongit.freedesktop.org/drm-intel:
  Revert "drm/i915: reverse dp link param selection, prefer fast over wide again"
  drm/i915: Track the primary plane correctly when reassigning planes
  drm/i915: Ignore VBT backlight presence check on HP Chromebook 14
  Revert "drm/i915: Don't set the 8to6 dither flag when not scaling"
2014-07-19 16:48:38 +10:00
Linus Torvalds 1b9f0efd61 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Peter Anvin:
 "A couple of key fixes and a few less critical ones.  The main ones
  are:

   - add a .bss section to the PE/COFF headers when building with EFI
     stub

   - invoke the correct paravirt magic when building the espfix page
     tables

  Unfortunately both of these areas also have at least one additional
  fix each still in thie pipeline, but which are not yet ready to push"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86: Remove unused variable "polling"
  x86/espfix/xen: Fix allocation of pages for paravirt page tables
  x86/efi: Include a .bss section within the PE/COFF headers
  efi: fdt: Do not report an error during boot if UEFI is not available
  efi/arm64: efistub: remove local copy of linux_banner
2014-07-18 20:46:55 -10:00
Linus Torvalds b579fcca32 InfiniBand/RDMA fixes for 3.16
- cxgb4 hardware driver regression fixes
  - mlx5 hardware driver regression fixes
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABCAAGBQJTyYWiAAoJEENa44ZhAt0hKkMP/ROnFwRtk0DKNGbyZLx/gLpK
 hEvzNeqZKn8OS2eHMvkP+pbKWrm1GoPcPEMZVfZv8dqwS7PzcmHVsA7WjzJF0mXh
 PLuPZfLHu4UZAZttP7Hm8XV+p7uthD/Fvk60x/uzboMZhSjFt4Khb0tEvezZ8Jyh
 5bbkiCp2PokD4z32fFoErTxa5XE8bYuqL70G9YyMuwdZWS2W4WbjihYHbi8vBzFd
 IsAvl4Ms/Fs8B5aeK0beeuals0yLYishPQY/F+r10GUQ3Q3JlD1/5j/MML3SZOlX
 FfYC3BDm3zgVHdaDTohlXbGVvJbziI5xkj0cUxVIk5f3SVZC36/BR+AxtjlhLjvR
 GEh9wwCP1cfXt7tRFBOS11M869oUOjG/5SQozsnJTAztpll85wxIWOyCCupRSokX
 90YNFtdGTBMkkm5vbddpekw+ku/qhrG8oNhKLMXoP1v4nV/8HiVG+oZdzQYrPPOp
 KMkNtC6ItLCXBRF0hUGGAszUaFap0ZFCfWk9d8W+xpOnFzVgE8pkG2kRH1fty5ja
 HbI/0OhiX5x+lYhyzGUb+AnjNTT5yYba1M+t1Sr3JC5AxBzwiS4FYq7TRTnNGt+p
 H6/+WMw+PcCpCaOcVCivbFCl1gceA7bKCMuwjjFoO0CjDT8Tr6pX3gRcDvrxHVGr
 rLi5EcHdgJEsPfaUACbv
 =JbA3
 -----END PGP SIGNATURE-----

Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Pull infiniband/rdma fixes from Roland Dreier:
 - cxgb4 hardware driver regression fixes
 - mlx5 hardware driver regression fixes

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/mlx5: Enable "block multicast loopback" for kernel consumers
  RDMA/cxgb4: Call iwpm_init() only once
  mlx5_core: Fix possible race between mr tree insert/delete
  RDMA/cxgb4: Initialize the device status page
  RDMA/cxgb4: Clean up connection on ARP error
  RDMA/cxgb4: Fix skb_leak in reject_cr()
2014-07-18 20:39:34 -10:00
Linus Torvalds cfd1b99b4a More fallout from module tests and code inspection.
Fixes to temperature limit write operations in adt7470 driver.
 Also, dashes are not allowed in hwmon 'name' attributes.
 Fix drivers where necessary.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJTx08gAAoJEMsfJm/On5mBDCkQAIsUQlxbUr6C0B9Sbi+LlMe9
 APEJnxDyUjsPfuykxcD6myPkOKIIVnE3H0zV5c/poiSjCLrgIdFmFcc477OYcdXH
 7zcO7VvlHgh5orLN9OVO3cTKVICPoubdLbSxgnP5Q/4M6N+LAbodIaxJ2+Sw8xco
 j9uw6gKxA8S12ak83u+i2df14P2VQFpXTGfEyTvl8B/1stGq22X8mCEayrQOviep
 Y/h1ZnHAY9PCMIRjW8+jnGR0r8JwKlvOZFdTyd2MlHU0hDtGtjhZxeD6ig4VbWvp
 UWBB5fvWdpGbVd6/c8VpMtOKVPaxcEvRDzekhXXjmdDObJYXz9gWxP9uX00+FpF1
 AmJ9pYw8aOmt7RUY/+WviKG3Z915NtWVAQ7C3HJneDjcE5fLnlidmsQyl9rapYOC
 KW3xBJK667fQNVx/9Mff8guffVt1lmuvw6fhAKL1z3i9M/0Qqk/rHxz3Mx7gsUcf
 4Ul909mqLzZvIZTvwq47ivWg3KX4uV//YtlFDd07+L4j9ZkszI2mxLHj36uXl4m/
 emFm6Xd4UPMm+zyHOkakZcn/z/ae36QRGJ5F7D16qF07rYm4ZjgrhFFSApoGrgSq
 nNrT+iJ/resIm3uukt9OnkszUMFp1Y4NUsYu9MAXEw9Yr6uMWRQZQ3g7e2E1JEte
 AyYhlpcb6lCjP7WO1aWm
 =LmdI
 -----END PGP SIGNATURE-----

Merge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fixes from Guenter Roeck:
 "More fallout from module tests and code inspection.

  Fixes to temperature limit write operations in adt7470 driver.  Also,
  dashes are not allowed in hwmon 'name' attributes.  Fix drivers where
  necessary"

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (adt7470) Fix writes to temperature limit registers
  hwmon: (da9055) Don't use dash in the name attribute
  hwmon: (da9052) Don't use dash in the name attribute
2014-07-18 20:37:24 -10:00
Linus Torvalds 0bae49b24c IOMMU Fixes for Linux v3.16-rc5
A couple of fixes for the Freescale PAMU driver queued up:
 
       * Fix PAMU window size check.
       * Fix the device domain attach condition.
       * Fix the error condition during iommu group
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
 iQIcBAABAgAGBQJTySEjAAoJECvwRC2XARrjgqYP/0sndB7nTd3qXQX64eY8aGZJ
 3NpZPeiBXIqI04HHkkqA+cGMIHVXluI18tqGC8XpW0oV4pVYfgPv645VuNRu7DtJ
 SEO0LECLkPJFqsRdWqasJezGGl7xEYVLtJasbF2SSXzrbaaEuqQGCpwh6hJ8dehX
 EU3qEMIt1wslVszFwHRAiPefONl4+Oa7DLWZOZ9+0cnylLFVtljGKfk599yO/jXL
 2Gq1ehJCOzDfBnpzD95P6wnMdRk5aBid9AbPKl9jzzTmBm5puEYkDY+hpFNGXmz0
 VUnSe3Jnh7B9TcKG6xv4GjAoraGeofQxNNl8HOjxGzAUERaadKXXA0kF4tPURTwm
 OWFpuz/fpLvruDRg0eBZ/FVnup2USNSy4Dr4VG0Zf/FZfRzaWOur1LnAOgFxga9h
 zcWJG2bfN/UiIRkh1ntTyjI2pAlEFc3Hm0bCG81+S/Fza6AM70iX/KSmjcb3RxWm
 Tv//ie5tABxgBoVJz7itYmC2JHsNp2bbKfuijbpOs8tEe6bLZjTMOM6qtbxOJ9JG
 J9gomxE612lt+Zm78rWt2PEuSqohX7zVJntSTrqk6wTmgO20trb+H7ASl6G11lCj
 LgJmyHRgrjVa8+EviWz9IkWh4pgvsr/HHngvNGXNl1cg+6DDypLO6QnrWEqcAqNK
 pNAvi5w/ZGuhPrPXxpWY
 =Xvdu
 -----END PGP SIGNATURE-----

Merge tag 'iommu-fixes-v3.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu

Pull iommu fixes from Joerg Roedel:
 "A couple of fixes for the Freescale PAMU driver queued up:

   - fix PAMU window size check.
   - fix the device domain attach condition.
   - fix the error condition during iommu group"

* tag 'iommu-fixes-v3.16-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/fsl: Fix the error condition during iommu group
  iommu/fsl: Fix the device domain attach condition.
  iommu/fsl: Fix PAMU window size check.
2014-07-18 20:36:13 -10:00