Commit Graph

1629 Commits

Author SHA1 Message Date
Alexander Usyskin
f931f4f3f0 mei: print correct device state during unexpected reset
Move the unexpected state print to the beginning of mei_reset,
thus printing right state.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-29 16:20:35 -07:00
Tomas Winkler
4bff7208f3 mei: nfc: fix memory leak in error path
The flow may reach the err label without freeing cl and cl_info

cl and cl_info weren't assigned to ndev->cl and cl_info
so they weren't freed in mei_nfc_free called on error path

Cc: <stable@vger.kernel.org> # 3.10+
Cc: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-29 16:20:28 -07:00
Kees Cook
9ae113ce5f lkdtm: add tests for additional page permissions
Testing execution and access of userspace from the kernel is needed for
validating things like Intel's SMEP and SMAP protections. Additionally,
add an explicit test for validating that RO page permissions have been
set for the RO data area.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-29 16:13:39 -07:00
Kees Cook
7d196ac303 lkdtm: adjust recursion size to avoid warnings
When CONFIG_FRAME_WARN is set low (e.g. some ARM builds), the hard-coded
stack buffer size used for kernel stack over run testing triggers build
warnings. Instead, avoid the warning by recalcuating the buffer size and
recursion count needed to trigger the test. Also uses the recursion counter
indirectly to avoid changing the parameter during the test.

Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-29 16:13:39 -07:00
Kees Cook
629c66a22c lkdtm: isolate stack corruption test
When tests were added to lkdtm that grew the stack frame, the stack
corruption test stopped working. This isolates the test in its own
function, and forces it not to be inlined.

Signed-off-by: Kees Cook <keescook@chromium.org>
Fixes: cc33c537c1 ("lkdtm: add "EXEC_*" triggers")
Cc: stable <stable@vger.kernel.org> # 3.12
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-25 06:21:00 +01:00
Alexander Usyskin
eec86b8e85 mei: move host_clients_map cleanup to device init
Move host_clients_map cleanup from host client init to device init.

This fixes bug where we cleaned up the bitmask that servers as pool for
host client ids while file descriptors are kept open during suspend.
On resume a new connection will be assigned id that is already taken
by opened file descriptor. Consequently read/write will fail due to
mismatched book keeping.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-19 19:53:46 -07:00
Paul Bolle
ed6f7ac1dc mei: me: downgrade two errors to debug level
The mei_me driver prints "suspend" at error level at each suspend. It
also prints "stop" at error level at driver unload. Downgrade these
uninteresting messages to debug level.

Cc: Adam Jackson <ajax@redhat.com>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-19 19:53:46 -07:00
Michael Opdenacker
bb9da88d7a misc: phantom: remove deprecated IRQF_DISABLED
This patch proposes to remove the use of the IRQF_DISABLED flag

It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-16 12:36:10 -07:00
Michael Opdenacker
b09534d3d8 misc: arm-charlcd: remove deprecated IRQF_DISABLED
This patch proposes to remove the use of the IRQF_DISABLED flag

It's a NOOP since 2.6.35 and it will be removed one day.

Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-16 12:36:10 -07:00
Tomas Winkler
838b3a6d62 mei: me: add Lynx Point Wellsburg work station device id
add missing device id for LPT based work station

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-16 12:36:09 -07:00
Jan Luebbe
fbfdb6ed62 misc/at25, dt: support probing at25 SPI EEPROM from DT
The commit d6ae0d578d introduced devicetree
binding documentation for this driver, but the driver itself does not yet
support the documented compatible entry. Fix this by adding the documented
entry to the driver.

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-16 12:36:09 -07:00
Jan Kara
240ddd495a vmw_vmci: Convert driver to use get_user_pages_fast()
Convert vmci_host_setup_notify() and qp_host_get_user_memory() to use
get_user_pages_fast() instead of get_user_pages(). Note that
qp_host_get_user_memory() was using mmap_sem for writing without an
apparent reason.

CC: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-05 18:04:55 -07:00
Dasaratharaman Chandramouli
af190494f9 misc: mic: Enable OSPM suspend and resume support.
This patch enables support for OSPM suspend and resume in the MIC
driver. During a host suspend event, the driver performs an
orderly shutdown of the cards if they are online. Upon resume, any
cards that were previously online before suspend are rebooted.
The driver performs an orderly shutdown of the card primarily to
ensure that applications in the card are terminated and mounted
devices are safely un-mounted before the card is powered down in
the event of an OSPM suspend.

The driver makes use of the MIC daemon to accomplish OSPM suspend
and resume. The driver registers a PM notifier per MIC device.
The devices get notified synchronously during PM_SUSPEND_PREPARE and
PM_POST_SUSPEND phases.

During the PM_SUSPEND_PREPARE phase, the driver performs one of the
following three tasks.
1) If the card is 'offline', the driver sets the card to a
   'suspended' state and returns.
2) If the card is 'online', the driver initiates card shutdown by
   setting the card state to suspending. This notifies the MIC
   daemon which invokes shutdown and sets card state to 'suspended'.
   The driver returns after the shutdown is complete.
3) If the card is already being shutdown, possibly by a host user
   space application, the driver sets the card state to 'suspended'
   and returns after the shutdown is complete.

During the PM_POST_SUSPEND phase, the driver simply notifies the
daemon and returns. The daemon boots those cards that were previously
online during the suspend phase.

Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-05 18:01:42 -07:00
Linus Walleij
bc34268976 misc: bh1780: probe from compatible string
Currently the BH1780GLI I2C driver relies on the device tree node
having the right name, but this is fragile. Use the compatible
string to probe the driver instead.

Acked-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-03 16:02:35 -07:00
Tomas Winkler
af68fb6555 mei: amthif: mei_amthif_host_init: propagate errors from called functions
propagate error codes from called functions, they are correct.

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-03 16:01:16 -07:00
Tomas Winkler
22f96a0eb6 mei: revamp open handler counts
Make open counter to be incremented and decremented
from mei_cl_link and mei_cl_unlik function respectively

Nfc was assuming symmetric linking API and thus open handler
count was never decreased. This patch fixes that.
We need to add separate open hander count for amthif which
is handled out of link/unlink functions and doesn't break
the symmetric API.

Last we do not waste clients slots if amthif or wd are not present
in the device. we don't need to allocates slots ahead
it is all covered by link/unlink before the devices is responding
to user space connection and thus not racing on allocation

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-03 16:01:16 -07:00
Tomas Winkler
e036cc5727 mei: simplify mei_open error handling
1. Perform simple checks first and only then attempt to allocate cl structure.
2. Remove open_handler_count test, this is already checked in mei_cl_link function
3. return -EMFILE instead of -ENOENT as expected by user space

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-10-03 16:00:52 -07:00
Greg Kroah-Hartman
d717349368 Merge 3.12-rc3 into char-misc-next
We need/want the mei fixes in here so we can apply other updates that
are depending on them.

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-29 18:27:03 -07:00
Sudeep Dutt
80d26236c7 misc: mic: depend on X86 for both host and card drivers.
This fixes build failures seen on certain non X86 architectures.
The card driver should correctly always depend on X86. The host
driver can potentially work on non X86 architectures although
it has never been built or validated in such configurations.
The host driver dependency on X86 can be removed at some point
in the future but this workaround is required for now.

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-27 17:20:19 -07:00
Ashutosh Dixit
ced2c60fb5 misc: mic: cleanups for "--strict" checkpatch.
These changes were mostly authored by Joe Perches <joe@perches.com>
@ https://lkml.org/lkml/2013/9/5/602

Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-27 17:20:19 -07:00
Sudeep Dutt
4aa79961a5 misc: mic: header file cleanups.
Dont use same name for header files in different folders.

These changes were suggested by Greg Kroah-Hartman during the
code review @ https://lkml.org/lkml/2013/9/6/18

Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-27 17:20:18 -07:00
Sudeep Dutt
2ce585286d misc: mic: host driver sysfs cleanups.
+ Use DEVICE_ATTR_RO/RW instead of DEVICE_ATTR
+ Use ATTRIBUTE_GROUPS

These changes were suggested by Greg Kroah-Hartman during the
code review @ https://lkml.org/lkml/2013/9/6/13

Reported-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-27 17:20:18 -07:00
Alexander Usyskin
4a704575cc mei: cancel stall timers in mei_reset
Unset init_clients_timer and amthif_stall_timers
in mei_reset in order to cancel timer ticking and hence
avoid recursive reset calls.

Cc:  <stable@vger.kernel.org> # 3.9+
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:56:53 -07:00
Tomas Winkler
e2b31644e9 mei: bus: stop wait for read during cl state transition
Bus layer omitted check for client state transition while waiting
for read completion
The client state transition may occur for example as result
of firmware initiated reset

Add mei_cl_is_transitioning wrapper to reduce the code
repetition.:

Cc:  <stable@vger.kernel.org> # 3.9+
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:56:53 -07:00
Tomas Winkler
1aee351a73 mei: make me client counters less error prone
1. u8 counters are prone to hard to detect overflow:
 make them unsigned long to match bit_ functions argument type

2. don't check me_clients_num for negativity, it is unsigned.

3. init all the me client counters from one place

Cc:  <stable@vger.kernel.org> # 3.9+
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:56:53 -07:00
Wei Yongjun
0a335b6d47 mmc: cb710: drop free_irq for devm_request_irq allocated irq
irq allocated with devm_request_irq should not be freed using
free_irq, because doing so causes a dangling pointer, and a
subsequent double free.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:55:30 -07:00
Ashutosh Dixit
2141c7c5ee Intel MIC Card Driver Changes for Virtio Devices.
This patch introduces the card "Virtio over PCIe" interface for
Intel MIC. It allows virtio drivers on the card to communicate with their
user space backends on the host via a device page. Ring 3 apps on the host
can add, remove and configure virtio devices. A thin MIC specific
virtio_config_ops is implemented which is borrowed heavily from previous
similar implementations in lguest and s390 @
drivers/lguest/lguest_device.c
drivers/s390/kvm/kvm_virtio.c

Co-author: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:52:24 -07:00
Ashutosh Dixit
f69bcbf3b4 Intel MIC Host Driver Changes for Virtio Devices.
This patch introduces the host "Virtio over PCIe" interface for
Intel MIC. It allows creating user space backends on the host and instantiating
virtio devices for them on the Intel MIC card. It uses the existing VRINGH
infrastructure in the kernel to access virtio rings from the host. A character
device per MIC is exposed with IOCTL, mmap and poll callbacks. This allows the
user space backend to:
(a) add/remove a virtio device via a device page.
(b) map (R/O) virtio rings and device page to user space.
(c) poll for availability of data.
(d) copy a descriptor or entire descriptor chain to/from the card.
(e) modify virtio configuration.
(f) handle virtio device reset.
The buffers are copied over using CPU copies for this initial patch
and host initiated MIC DMA support is planned for future patches.
The avail and desc virtio rings are in host memory and the used ring
is in card memory to maximize writes across PCIe for performance.

Co-author: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:50:56 -07:00
Sudeep Dutt
aa27badd89 Intel MIC Card Driver for X100 family.
This patch does the following:
a) Initializes the Intel MIC X100 platform device and driver.
b) Sets up support to handle shutdown requests from the host.
c) Maps the device page after obtaining the device page address
from the scratchpad registers updated by the host.
d) Informs the host upon a card crash by registering a panic notifier.
e) Informs the host upon a poweroff/halt event.

Co-author: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:50:56 -07:00
Sudeep Dutt
3a6a920189 Intel MIC Host Driver, card OS state management.
This patch enables the following features:
a) Boots and shuts down the card via sysfs entries.
b) Allocates and maps a device page for communication with the
   card driver and updates the device page address via scratchpad
   registers.
c) Provides sysfs entries for shutdown status, kernel command line,
   ramdisk and log buffer information.

Co-author: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:50:56 -07:00
Dasaratharaman Chandramouli
a01e28f692 Intel MIC Host Driver Interrupt/SMPT support.
This patch enables the following features:
a) MSIx, MSI and legacy interrupt support.
b) System Memory Page Table(SMPT) support. SMPT enables system memory
   access from the card. On X100 devices the host can program 32 SMPT
   registers each capable of accessing 16GB of system memory
   address space from X100 devices. The registers can thereby be used
   to access a cumulative 512GB of system memory address space from
   X100 devices at any point in time.

Co-author: Sudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:50:56 -07:00
Sudeep Dutt
b170d8ce3f Intel MIC Host Driver for X100 family.
This patch enables the following:
a) Initializes the Intel MIC X100 PCIe devices.
b) Provides sysfs entries for family and stepping information.

Co-author: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: Caz Yokoyama <Caz.Yokoyama@intel.com>
Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com>
Signed-off-by: Harshavardhan R Kharche <harshavardhan.r.kharche@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Sudeep Dutt <sudeep.dutt@intel.com>
Acked-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Reviewed-by: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:49:23 -07:00
Wei Yongjun
9089e3be60 VMCI: fix to pass correct device identity to free_irq()
free_irq() expects the same device identity that was passed to
corresponding request_irq(), otherwise the IRQ is not freed.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Dmitry Torokhov <dtor@vmware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:47:36 -07:00
Oliver Schinagl
9fd379e929 ARM: sunxi: Initial support for Allwinner's Security ID fuses
Allwinner has electric fuses (efuse) on their line of chips. This driver
reads those fuses, seeds the kernel entropy and exports them as a sysfs
node.

These fuses are most likely to be programmed at the factory, encoding
things like Chip ID, some sort of serial number, etc. and appear to be
reasonably unique.
While in theory, these should be writeable by the user, it will probably
be inconvenient to do so. Allwinner recommends that a certain input pin,
labeled 'efuse_vddq', be connected to GND. To write these fuses however,
a 2.5 V programming voltage needs to be applied to this pin.

Even so, they can still be used to generate a board-unique mac from,
board unique RSA key and seed the kernel RNG.

On sun7i additional storage is available, this is initially used for an
UEFI BOOT key, Secure JTAG key, HDMI-HDCP key and vendor specific keys.

Currently supported are the following known chips:
Allwinner sun4i (A10)
Allwinner sun5i (A10s, A13)
Allwinner sun7i (A20)

Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 13:47:36 -07:00
Jingoo Han
30399bbfa6 misc: pti: remove unnecessary pci_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 09:13:54 -07:00
Jingoo Han
b9be2c60fc misc: mei: remove unnecessary pci_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 09:13:54 -07:00
Jingoo Han
8221b3a848 misc: ibmasm: remove unnecessary pci_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 09:13:54 -07:00
Jingoo Han
a840a72d72 misc: tifm: remove unnecessary pci_set_drvdata()
The driver core clears the driver data to NULL after device_release
or on probe failure. Thus, it is not needed to manually clear the
device driver data to NULL.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 09:13:53 -07:00
Daniel Mack
f91f9258f6 drivers: misc: ti_dac7512: add support for DT matching
Only matching is done via DT, no other details can be passed.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 09:04:06 -07:00
Daniel Mack
beb900fc24 drivers: misc: ti_dac7512: provide a SPI ID table
This way, the module can be autoloaded by the SPI core.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 09:04:06 -07:00
Daniel Mack
e06465050e drivers: misc: ti_dac7512: drop DAC7512_DRV_NAME
The driver's name can be provided directly, so drop the #define.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 09:04:05 -07:00
Daniel Mack
f464a1d00e drivers: misc: ti_dac7512: drop module version
Providing a module version doesn't add any value, so drop it.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 09:04:05 -07:00
Jingoo Han
bbf831dfe8 misc: ibmasm: Remove casting the return value which is a void pointer
Casting the return value which is a void pointer is redundant.
The conversion from void pointer to any other pointer type is
guaranteed by the C programming language.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:53:23 -07:00
Chen Gang
d396034aa8 drivers: misc: bmp085: remove '__init' from mp085_get_of_properties()
bmp085_get_of_properties() is called by bmp085_init_client() which is
called by bmp085_probe() which is an EXPORT_SYMBOL_GPL function.

bmp085_probe() is really used as a probe function by another modules
(e.g. bmp085-i2c.c, bmp085-spi.c).

Except bmp085_get_of_properties(), all functions have no '__init', so
need remove '__init' from bmp085_get_of_properties() too, or at least,
it will report related warning:

  WARNING: vmlinux.o(.text+0x4c8a07): Section mismatch in reference from the variable .LM171 to the variable .init.text:_bmp085_get_of_properties
  The function .LM171() references
  the variable __init _bmp085_get_of_properties.
  This is often because .LM171 lacks a __init
  annotation or the annotation of _bmp085_get_of_properties is wrong.

Signed-off-by: Chen Gang <gang.chen@asianux.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:44:40 -07:00
Tomas Winkler
a14c44d82f mei: mei_cl_unlink: no need to loop over dev list
we can call list_del_init regardless the client is
linked or not it is always properly initialized

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:42:44 -07:00
Tomas Winkler
136698e535 mei: push credentials inside the irq write handler
this eventually allows as use a single write queue
both for control and data messages and removing possible
race

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:42:02 -07:00
Tomas Winkler
2ebf8c94d4 mei: propagate error from write routines instead of ENODEV
ENODEV will cause application to try to reconnect since
it assumes that device went through the reset
write errors are not always fatal it can happen due to
resource contention

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:42:02 -07:00
Alexander Usyskin
0da9074735 mei: fix function names in debug prints
Fix calling function names in debug prints.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:42:02 -07:00
Alexander Usyskin
c0abffbd98 mei: prefix client log messages with client me and host ids
define cl_dbg and cl_err macros that add me and host id
prefix for debug and error log messages so we can track
for the client context of the flow.

Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:39:27 -07:00
Tomas Winkler
a9c8a17aea mei: mei_release: drop redundant check if cb is NULL
mei_io_cb_free follows kfree design and check for NULL internally

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-09-26 08:39:27 -07:00