firefly-linux-kernel-4.4.55.git
11 years agoat_hdmac: move to generic DMA binding
Ludovic Desroches [Fri, 19 Apr 2013 09:11:18 +0000 (09:11 +0000)]
at_hdmac: move to generic DMA binding

Update at_hdmac driver to support generic DMA device tree binding. Devices
can still request channel with dma_request_channel() then it doesn't break
DMA for non DT boards.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: ioat3_alloc_sed can be static
Fengguang Wu [Tue, 16 Apr 2013 05:41:26 +0000 (13:41 +0800)]
ioatdma: ioat3_alloc_sed can be static

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: Adding write back descriptor error status support for ioatdma 3.3
Dave Jiang [Wed, 10 Apr 2013 23:44:39 +0000 (16:44 -0700)]
ioatdma: Adding write back descriptor error status support for ioatdma 3.3

v3.3 provides support for write back descriptor error status. This allows
reporting of errors in a descriptor field. In supporting this, certain
errors such as P/Q validation errors no longer halts the channel. The DMA
engine can continue to execute until the end of the chain and allow software
to report the "errors" up the stack. We are also going to mask those error
interrupts and handle them when the "chain" has completed at the end.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: S1200 platforms ioatdma channel 2 and 3 falsely advertise RAID cap
Dave Jiang [Wed, 10 Apr 2013 23:44:32 +0000 (16:44 -0700)]
ioatdma: S1200 platforms ioatdma channel 2 and 3 falsely advertise RAID cap

This workaround checks for channel 2&3 and remove RAID cap.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: Adding support for 16 src PQ ops and super extended descriptors
Dave Jiang [Mon, 15 Apr 2013 17:25:56 +0000 (10:25 -0700)]
ioatdma: Adding support for 16 src PQ ops and super extended descriptors

v3.3 introduced 16 sources PQ operations. This also introduced super extended
descriptors to support the 16 srcs operations. This patch adds support for
the 16 sources ops and in turn adds the super extended descriptors for those
ops.

5 SED pools are created depending on the descriptor sizes. An SED can be a 64
bytes sized descriptor or larger and must be physically contiguous. A kmem
cache pool is created for allocating the software descriptor that manages the
hardware descriptor. The super extended descriptor will take place of extended
descriptor under certain operations and be "attached" to the op descriptor
during operation. This is a new feature for ioatdma v3.3.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: Removing hw bug workaround for CB3.x .2 and earlier
Dave Jiang [Wed, 10 Apr 2013 23:44:20 +0000 (16:44 -0700)]
ioatdma: Removing hw bug workaround for CB3.x .2 and earlier

CB3.2 and earlier hardware has silicon bugs that are no longer needed with
the new hardware. We don't have to use a NULL op to signal interrupt for
RAID ops any longer. This code make sure the legacy workarounds only happen on
legacy hardware.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodw_dmac: add ACPI support
Andy Shevchenko [Tue, 9 Apr 2013 11:05:46 +0000 (14:05 +0300)]
dw_dmac: add ACPI support

Since we have proper ACPI DMA helpers implemented, the driver may use it. This
patch introduces custom filter function together with acpi_device_id table.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmaengine: call acpi_dma_request_slave_channel as well
Andy Shevchenko [Tue, 9 Apr 2013 11:05:44 +0000 (14:05 +0300)]
dmaengine: call acpi_dma_request_slave_channel as well

The slave device could be enumerated by ACPI. In that case the
dma_request_slave_channel should use the acpi_dma_request_slave_channel()
helper.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodma: acpi-dma: introduce ACPI DMA helpers
Andy Shevchenko [Tue, 9 Apr 2013 11:05:43 +0000 (14:05 +0300)]
dma: acpi-dma: introduce ACPI DMA helpers

There is a new generic API to get a DMA channel for a slave device (commit
9a6cecc8 "dmaengine: add helper function to request a slave DMA channel"). In
similar fashion to the DT case (commit aa3da644 "of: Add generic device tree
DMA helpers") we introduce helpers to the DMAC drivers which are enumerated by
ACPI.

The proposed extension provides the following API calls:
acpi_dma_controller_register(), devm_acpi_dma_controller_register()
acpi_dma_controller_free(), devm_acpi_dma_controller_free()
acpi_dma_simple_xlate()
acpi_dma_request_slave_chan_by_index()
acpi_dma_request_slave_chan_by_name()

The first two should be used, for example, at probe() and remove() of the
corresponding DMAC driver. At the register stage the DMAC driver supplies a
custom xlate() function to translate a struct dma_spec into struct dma_chan.

Accordingly to the ACPI Fixed DMA resource specification the only two pieces of
information the slave device has are the channel id and the request line (slave
id). Those two are represented by struct dma_spec. The
acpi_dma_request_slave_chan_by_index() provides access to the specifix FixedDMA
resource by its index. Whereas dma_request_slave_channel() takes a string
parameter to identify the DMA resources required by the slave device. To make a
slave device driver work with both DeviceTree and ACPI enumeration a simple
convention is established: "tx" corresponds to the index 0 and "rx" to the
index 1. In case of robust configuration the slave device driver unfortunately
needs to call acpi_dma_request_slave_chan_by_index() directly.

Additionally the patch provides "managed" version of the register/free pair
i.e. devm_acpi_dma_controller_register() and devm_acpi_dma_controller_free().
Usually, the driver uses only devm_acpi_dma_controller_register().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: skip silicon bug workaround for pq_align for cb3.3
Dave Jiang [Tue, 26 Mar 2013 22:43:15 +0000 (15:43 -0700)]
ioatdma: skip silicon bug workaround for pq_align for cb3.3

The alignment workaround is only necessary for cb3.2 or earlier platforms.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: Removing PQ val disable for cb3.3
Dave Jiang [Tue, 26 Mar 2013 22:43:09 +0000 (15:43 -0700)]
ioatdma: Removing PQ val disable for cb3.3

The PQ Val ops work on the newer hardware so we should actually provide support
for it and remove the disabling bits.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: skip legacy reset bits since v3.3 plattform doesn't need it
Dave Jiang [Tue, 26 Mar 2013 22:42:59 +0000 (15:42 -0700)]
ioatdma: skip legacy reset bits since v3.3 plattform doesn't need it

Make it so only 3.2 and earlier platform need the PCI config register
clearings since this implementation does not have the registers.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: channel reset scheme fixup on Intel Atom S1200 platforms
Dave Jiang [Tue, 26 Mar 2013 22:42:47 +0000 (15:42 -0700)]
ioatdma: channel reset scheme fixup on Intel Atom S1200 platforms

The Intel Atom S1200 family ioatdma changed the channel reset behavior.
It does a reset similar to PCI FLR by resetting all the MSIX
registers. We have to re-init msix interrupts because of this. This
workaround is only specific to this platform and is not expected to carry
over to the later generations.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: Add 64bit chansts register read for ioat v3.3.
Dave Jiang [Tue, 26 Mar 2013 22:42:41 +0000 (15:42 -0700)]
ioatdma: Add 64bit chansts register read for ioat v3.3.

The channel status register for v3.3 is now 64bit. Use readq if available
on v3.3 platforms.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: Adding PCI IDs for Intel Atom S1200 product family ioatdma devices
Dave Jiang [Tue, 26 Mar 2013 22:42:35 +0000 (15:42 -0700)]
ioatdma: Adding PCI IDs for Intel Atom S1200 product family ioatdma devices

These should be good for the IOAT DMA devices on the Intel Atom S1269,
S1279, and S1289 platforms. We are also adding IOAT v3.3 definition for
the new DMA engine.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: Adding Haswell devid for ioatdma
Dave Jiang [Mon, 25 Mar 2013 21:37:31 +0000 (14:37 -0700)]
ioatdma: Adding Haswell devid for ioatdma

Adding Haswell PCI device IDs for ioatdma and simplify the detection of
certain Xeon CPUs that has alignment bugs so that modifications can be
changed at a single place going forward.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmaengine: OMAP: Register SDMA controller with Device Tree DMA driver
Jon Hunter [Tue, 26 Feb 2013 18:27:24 +0000 (12:27 -0600)]
dmaengine: OMAP: Register SDMA controller with Device Tree DMA driver

If the device-tree blob is present during boot, then register the SDMA
controller with the device-tree DMA driver so that we can use device-tree
to look-up DMA client information.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodw_dmac: remove unnecessary ENODEV check
Andy Shevchenko [Tue, 26 Mar 2013 17:29:13 +0000 (19:29 +0200)]
dw_dmac: remove unnecessary ENODEV check

If CONFIG_OF is not set the of_node of the device will always be NULL.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmaengine: dw_dmac: simplify master selection
Arnd Bergmann [Tue, 26 Mar 2013 14:53:57 +0000 (16:53 +0200)]
dmaengine: dw_dmac: simplify master selection

The patch to add the common DMA binding added a dummy dw_dma_slave
structure into the dw_dma_chan structure in order to configure the
masters correctly. It turns out that this can be simplified if we
pick the DMA masters in the dwc_alloc_chan_resources function instead
and save them in the dw_dma_chan structure directly.

This could be simplified further once all users that today use
dw_dma_slave for configuration get converted to device tree based
setup instead.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodw_dmac: rename DT related methods to reflect their belonging
Andy Shevchenko [Tue, 26 Mar 2013 14:53:55 +0000 (16:53 +0200)]
dw_dmac: rename DT related methods to reflect their belonging

Since we will have not only DT cases in future let's rename DT related methods
to reflect their belonging.

The rename was done as follows:
struct dw_dma_filter_args -> struct dw_dma_of_filter_args
dw_dma_generic_filter() -> dw_dma_of_filter()
dw_dma_xlate() -> dw_dma_of_xlate()
dw_dma_id_table -> dw_dma_of_id_table

There is no functional change.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodw_dmac: fix style of the comments
Andy Shevchenko [Tue, 26 Mar 2013 14:53:54 +0000 (16:53 +0200)]
dw_dmac: fix style of the comments

Let's use capital letter as a first one in the comments.
There is no functional changes.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodma: Make the 'mask' parameter of __dma_request_channel const
Lars-Peter Clausen [Mon, 25 Mar 2013 12:23:52 +0000 (13:23 +0100)]
dma: Make the 'mask' parameter of __dma_request_channel const

The 'mask' parameter is not modified in __dma_request_channel and really
shouldn't be. Make this explicit by making the parameter const.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmaengine:sirf:take clock and enable it while probing
Barry Song [Mon, 18 Mar 2013 08:33:43 +0000 (16:33 +0800)]
dmaengine:sirf:take clock and enable it while probing

there is hardcode which enabled the clock of dmaengine before,
this patch takes the clock by standard clock API and enable it
in probe.

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodw_dmac: don't wait for FIFO_EMPTY endlessly in dwc_chan_pause
Andy Shevchenko [Thu, 21 Mar 2013 09:49:17 +0000 (11:49 +0200)]
dw_dmac: don't wait for FIFO_EMPTY endlessly in dwc_chan_pause

When we pause the channel after transfer is completed we might stuck in the
dwc_chan_pause() because the FIFO_EMPTY flag will never be asserted. To avoid
the endless loop we introduce a timeout here (*). The proper solution is to
somehow get the residue in FIFO and avoid busyloop when transfer is done, but
this task is not simple and fast.

Unfortunately we can't use cpu_relax() in conjunction with jiffies checker, due
to we have interrupts disabled by spin_lock_irqsave() and there is a big chance
that no interrupts will come to update the jiffies..

(*) The worst case is
AHB write * FIFO size / hclk = 5.12 us,
    where
AHB write = 2 cycles,
hclk = 100 MHz,
burst size = 1 byte,
FIFO size = 256 bytes.
    The proposed 40us timeout might be considered as a big one, though we enter
    to that state only when we have the transfer already completed.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodma: imx-dma: Remove redundant NULL check before kfree
Syam Sidhardhan [Sun, 24 Feb 2013 23:16:26 +0000 (04:46 +0530)]
dma: imx-dma: Remove redundant NULL check before kfree

kfree on NULL pointer is a no-op.

Signed-off-by: Syam Sidhardhan <s.syam@samsung.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodma: ipu: ipu_idmac: Fix section mismatch
Fabio Estevam [Tue, 12 Mar 2013 23:53:37 +0000 (20:53 -0300)]
dma: ipu: ipu_idmac: Fix section mismatch

Since commit 84c1e63c12 (dma: Remove erroneous __exit and __exit_p() references)
the following section mismatch happens:

WARNING: drivers/built-in.o(.text+0x20f94): Section mismatch in reference from the function ipu_remove() to the function .exit.text:ipu_idmac_exit()
The function ipu_remove() references a function in an exit section.
Often the function ipu_idmac_exit() has valid usage outside the exit section
and the fix is to remove the __exit annotation of ipu_idmac_exit.

Remove the '__exit' annotation from ipu_idmac_exit in order to fix it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Maxin B. John <maxin.john@enea.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodma: tegra: assume CONFIG_OF
Stephen Warren [Mon, 11 Mar 2013 22:30:26 +0000 (16:30 -0600)]
dma: tegra: assume CONFIG_OF

Tegra only supports, and always enables, device tree. Remove all ifdefs
and runtime checks for DT support from the driver.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodma: pl330: Convert to devm_ioremap_resource()
Sachin Kamat [Mon, 4 Mar 2013 09:06:27 +0000 (14:36 +0530)]
dma: pl330: Convert to devm_ioremap_resource()

Use the newly introduced devm_ioremap_resource() instead of
devm_request_and_ioremap() which provides more consistent error handling.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmatest: append verify result to results
Andy Shevchenko [Mon, 4 Mar 2013 09:09:34 +0000 (11:09 +0200)]
dmatest: append verify result to results

Comparison between buffers is stored to the dedicated structure.

Note that the verify result is now accessible only via file 'results' in the
debugfs.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmatest: gather test results in the linked list
Andy Shevchenko [Mon, 4 Mar 2013 09:09:33 +0000 (11:09 +0200)]
dmatest: gather test results in the linked list

The patch provides a storage for the test results in the linked list. The
gathered data could be used after test is done.

The new file 'results' represents gathered data of the in progress test. The
messages collected are printed to the kernel log as well.

Example of output:
% cat /sys/kernel/debug/dmatest/results
dma0chan0-copy0: #1: No errors with src_off=0x7bf dst_off=0x8ad len=0x3fea (0)

The message format is unified across the different types of errors. A number in
the parens represents additional information, e.g. error code, error counter,
or status.

Note that the buffer comparison is done in the old way, i.e. data is not
collected and just printed out.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmatest: define MAX_ERROR_COUNT constant
Andy Shevchenko [Mon, 4 Mar 2013 09:09:32 +0000 (11:09 +0200)]
dmatest: define MAX_ERROR_COUNT constant

Its meaning is to limit amount of error messages to be printed out when buffer
mismatch is occured.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmatest: return actual state in 'run' file
Andy Shevchenko [Mon, 4 Mar 2013 09:09:31 +0000 (11:09 +0200)]
dmatest: return actual state in 'run' file

The following command should return actual state of the test.
% cat /sys/kernel/debug/dmatest/run

To wait for test done the user may perform a busy loop that checks the state.
% while [ $(cat /sys/kernel/debug/dmatest/run) = "Y" ]
> do
>  echo -n "."
>  sleep 1
> done
> echo

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmatest: run test via debugfs
Andy Shevchenko [Mon, 4 Mar 2013 09:09:30 +0000 (11:09 +0200)]
dmatest: run test via debugfs

Instead of doing
modprobe dmatest ...
modprobe -r dmatest
we allow user to run tests interactively.

The dmatest could be built as module or inside kernel. Let's consider those
cases.

1. When dmatest is built as a module...

After mounting debugfs and loading the module, the /sys/kernel/debug/dmatest
folder with nodes will be created. They are the same as module parameters with
addition of the 'run' node that controls run and stop phases of the test.

Note that in this case test will not run on load automatically.

Example of usage:
% echo dma0chan0 > /sys/kernel/debug/dmatest/channel
% echo 2000 > /sys/kernel/debug/dmatest/timeout
% echo 1 > /sys/kernel/debug/dmatest/iterations
% echo 1 > /sys/kernel/debug/dmatest/run

After a while you will start to get messages about current status or error like
in the original code.

Note that running a new test will stop any in progress test.

2. When built-in in the kernel...

The module parameters that is supplied to the kernel command line will be used
for the first performed test. After user gets a control, the test could be
interrupted or re-run with same or different parameters. For the details see
the above section "1. When dmatest is built as a module..."

In both cases the module parameters are used as initial values for the test case.
You always could check them at run-time by running
% grep -H . /sys/module/dmatest/parameters/*

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmatest: split test parameters to separate structure
Andy Shevchenko [Mon, 4 Mar 2013 09:09:29 +0000 (11:09 +0200)]
dmatest: split test parameters to separate structure

Better to keep test parameters separate from internal variables.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmatest: move dmatest_channels and nr_channels to dmatest_info
Andy Shevchenko [Mon, 4 Mar 2013 09:09:28 +0000 (11:09 +0200)]
dmatest: move dmatest_channels and nr_channels to dmatest_info

We don't need to have them global and later we would like to protect access to
them as well.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmatest: create dmatest_info to keep test parameters
Andy Shevchenko [Mon, 4 Mar 2013 09:09:27 +0000 (11:09 +0200)]
dmatest: create dmatest_info to keep test parameters

The proposed change will remove usage of the module parameters as global
variables. In future it helps to run different test cases sequentially.

The patch introduces the run_threaded_test() and stop_threaded_test() functions
that could be used later outside of dmatest_init, dmatest_exit scope.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmatest: allocate memory for pq_coefs from heap
Andy Shevchenko [Mon, 4 Mar 2013 09:09:26 +0000 (11:09 +0200)]
dmatest: allocate memory for pq_coefs from heap

This will help in future to hide a global variable usage.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodmatest: cancel thread immediately when asked for
Andy Shevchenko [Mon, 4 Mar 2013 09:09:25 +0000 (11:09 +0200)]
dmatest: cancel thread immediately when asked for

If user have the timeout alike issues and wants to cancel the thread
immediately, the current call of wait_event_freezable_timeout is preventing to
this until timeout is expired. Thus, user will experience the unnecessary
delays.

Adding kthread_should_stop() check inside wait_event_freezable_timeout() solves
that.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: allow all channels to have irq coalescing support
Dave Jiang [Tue, 26 Feb 2013 16:20:36 +0000 (09:20 -0700)]
ioatdma: allow all channels to have irq coalescing support

Looks like only the RAID channels are allowed to have irq coalescing support
in the existing code. Fixing that. The ioat3 cleanup code can handle memcpy
ops anyways

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoioatdma: make debug output more readable
Dave Jiang [Mon, 4 Mar 2013 17:59:54 +0000 (10:59 -0700)]
ioatdma: make debug output more readable

Making OP field a hex instead of integer to make it more readable. Also add
the dump out of the NEXT field.

Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Dan Williams <djbw@fb.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodma: Remove erroneous __exit and __exit_p() references
Maxin B. John [Wed, 20 Feb 2013 00:07:04 +0000 (02:07 +0200)]
dma: Remove erroneous __exit and __exit_p() references

Removing the annotation with __exit and referencing with __exit_p()
present in dma driver module remove hooks.

Part of the __devexit and __devexit_p() purge.

Signed-off-by: Maxin B. John <maxin.john@enea.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agodma: timb_dma: Fix compiler warning
Maxin B. John [Tue, 19 Feb 2013 20:33:53 +0000 (22:33 +0200)]
dma: timb_dma: Fix compiler warning

Fix this compiler warning:
warning: 'td_remove' defined but not used [-Wunused-function]

Signed-off-by: Maxin B. John <maxin.john@enea.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agopch_dma: Use GFP_ATOMIC because called from interrupt context
Tomoya MORINAGA [Tue, 12 Feb 2013 02:25:33 +0000 (11:25 +0900)]
pch_dma: Use GFP_ATOMIC because called from interrupt context

pdc_desc_get() is called from pd_prep_slave_sg, and the function is
called from interrupt context(e.g. Uart driver "pch_uart.c").
In fact, I saw kernel error message.
So, GFP_ATOMIC must be used not GFP_NOIO.

Signed-off-by: Tomoya MORINAGA <tomoya.rohm@gmail.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoDMA: PL330: allow submitting 2 requests at a time
Jassi Brar [Wed, 13 Feb 2013 10:43:14 +0000 (16:13 +0530)]
DMA: PL330: allow submitting 2 requests at a time

Fix the logic to allow mc programming of second transfer after first
has been done, by removing immediate return upon success and iterating
until we detect QFull or DMAC dying.

Reported-by: Alvaro Moran <dirac3000@gmail.com>
Tested-by: Alvaro Moran <dirac3000@gmail.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
11 years agoLinux 3.9-rc7
Linus Torvalds [Mon, 15 Apr 2013 00:45:16 +0000 (17:45 -0700)]
Linux 3.9-rc7

11 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:13:24 +0000 (11:13 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Misc fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set
  x86/mm/cpa/selftest: Fix false positive in CPA self test
  x86/mm/cpa: Convert noop to functional fix
  x86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metal
  x86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updates

11 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:12:17 +0000 (11:12 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc fixlets"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/cputime: Fix accounting on multi-threaded processes
  sched/debug: Fix sd->*_idx limit range avoiding overflow
  sched_clock: Prevent 64bit inatomicity on 32bit systems
  sched: Convert BUG_ON()s in try_to_wake_up_local() to WARN_ON_ONCE()s

11 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 14 Apr 2013 18:10:44 +0000 (11:10 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc fixlets"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Fix error return code
  ftrace: Fix strncpy() use, use strlcpy() instead of strncpy()
  perf: Fix strncpy() use, use strlcpy() instead of strncpy()
  perf: Fix strncpy() use, always make sure it's NUL terminated
  perf: Fix ring_buffer perf_output_space() boundary calculation
  perf/x86: Fix uninitialized pt_regs in intel_pmu_drain_bts_buffer()

11 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sun, 14 Apr 2013 17:55:20 +0000 (10:55 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "One fix for a hotplug locking regressions, and one fix for an oops if
  you unplug the monitor at an inopportune moment on the udl device."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/fb-helper: Fix locking in drm_fb_helper_hotplug_event
  udl: handle EDID failure properly.

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Linus Torvalds [Sun, 14 Apr 2013 17:54:40 +0000 (10:54 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/gerg/m68knommu

Pull m68knommu fix from Greg Ungerer:
 "This contains only a single compilation fix for ColdFire m68k targets
  that use local non-GPIOLIB support."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: define a local gpio_request_one() function

11 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Sun, 14 Apr 2013 17:53:54 +0000 (10:53 -0700)]
Merge git://www.linux-watchdog.org/linux-watchdog

Pull watchdog fix from Wim Van Sebroeck:
 "It will fix compile errors for the at91rm9200_wdt driver"

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: Revert the AT91RM9200_WATCHDOG dependency

11 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Sun, 14 Apr 2013 17:52:54 +0000 (10:52 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

Pull one more btrfs fix from Chris Mason:
 "This has a recent fix from Josef for our tree log replay code.  It
  fixes problems where the inode counter for the number of bytes in the
  file wasn't getting updated properly during fsync replay.

  The commit did get rebased this morning, but it was only to clean up
  the subject line.  The code hasn't changed."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: make sure nbytes are right after log replay

11 years agoMerge tag 'trace-fixes-v3.9-rc-v3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sun, 14 Apr 2013 17:50:55 +0000 (10:50 -0700)]
Merge tag 'trace-fixes-v3.9-rc-v3' of git://git./linux/kernel/git/rostedt/linux-trace

Pull ftrace fixes from Steven Rostedt:
 "Namhyung Kim found and fixed a bug that can crash the kernel by simply
  doing: echo 1234 | tee -a /sys/kernel/debug/tracing/set_ftrace_pid

  Luckily, this can only be done by root, but still is a nasty bug."

* tag 'trace-fixes-v3.9-rc-v3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section
  tracing: Fix possible NULL pointer dereferences

11 years agoAdd file_ns_capable() helper function for open-time capability checking
Linus Torvalds [Sun, 14 Apr 2013 17:06:31 +0000 (10:06 -0700)]
Add file_ns_capable() helper function for open-time capability checking

Nothing is using it yet, but this will allow us to delay the open-time
checks to use time, without breaking the normal UNIX permission
semantics where permissions are determined by the opener (and the file
descriptor can then be passed to a different process, or the process can
drop capabilities).

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agowatchdog: Revert the AT91RM9200_WATCHDOG dependency
Nicolas Ferre [Wed, 10 Apr 2013 12:36:22 +0000 (14:36 +0200)]
watchdog: Revert the AT91RM9200_WATCHDOG dependency

Compiling the at91rm9200_wdt.c driver without at91rm9200
support was leading to several errors:

drivers/built-in.o: In function `at91_wdt_close':
at91_adc.c:(.text+0xc9fe4): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91_wdt_write':
at91_adc.c:(.text+0xca004): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91wdt_shutdown':
at91_adc.c:(.text+0xca01c): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91wdt_suspend':
at91_adc.c:(.text+0xca038): undefined reference to `at91_st_base'
drivers/built-in.o: In function `at91_wdt_open':
at91_adc.c:(.text+0xca0cc): undefined reference to `at91_st_base'
drivers/built-in.o:at91_adc.c:(.text+0xca2c8): more undefined references to
`at91_st_base' follow

So, reverting the modification of the "depends" Kconfig line
introduced by patch a6a1bcd37 (watchdog: at91rm9200: add DT support)
seems to be the good solution.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
11 years agovfs: Revert spurious fix to spinning prevention in prune_icache_sb
Suleiman Souhlal [Sat, 13 Apr 2013 23:03:06 +0000 (16:03 -0700)]
vfs: Revert spurious fix to spinning prevention in prune_icache_sb

Revert commit 62a3ddef6181 ("vfs: fix spinning prevention in prune_icache_sb").

This commit doesn't look right: since we are looking at the tail of the
list (sb->s_inode_lru.prev) if we want to skip an inode, we should put
it back at the head of the list instead of the tail, otherwise we will
keep spinning on it.

Discovered when investigating why prune_icache_sb came top in perf
reports of a swapping load.

Signed-off-by: Suleiman Souhlal <suleiman@google.com>
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@vger.kernel.org # v3.2+
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agokobject: fix kset_find_obj() race with concurrent last kobject_put()
Linus Torvalds [Sat, 13 Apr 2013 22:15:30 +0000 (15:15 -0700)]
kobject: fix kset_find_obj() race with concurrent last kobject_put()

Anatol Pomozov identified a race condition that hits module unloading
and re-loading.  To quote Anatol:

 "This is a race codition that exists between kset_find_obj() and
  kobject_put().  kset_find_obj() might return kobject that has refcount
  equal to 0 if this kobject is freeing by kobject_put() in other
  thread.

  Here is timeline for the crash in case if kset_find_obj() searches for
  an object tht nobody holds and other thread is doing kobject_put() on
  the same kobject:

    THREAD A (calls kset_find_obj())     THREAD B (calls kobject_put())
    splin_lock()
                                         atomic_dec_return(kobj->kref), counter gets zero here
                                         ... starts kobject cleanup ....
                                         spin_lock() // WAIT thread A in kobj_kset_leave()
    iterate over kset->list
    atomic_inc(kobj->kref) (counter becomes 1)
    spin_unlock()
                                         spin_lock() // taken
                                         // it does not know that thread A increased counter so it
                                         remove obj from list
                                         spin_unlock()
                                         vfree(module) // frees module object with containing kobj

    // kobj points to freed memory area!!
    kobject_put(kobj) // OOPS!!!!

  The race above happens because module.c tries to use kset_find_obj()
  when somebody unloads module.  The module.c code was introduced in
  commit 6494a93d55fa"

Anatol supplied a patch specific for module.c that worked around the
problem by simply not using kset_find_obj() at all, but rather than make
a local band-aid, this just fixes kset_find_obj() to be thread-safe
using the proper model of refusing the get a new reference if the
refcount has already dropped to zero.

See examples of this proper refcount handling not only in the kref
documentation, but in various other equivalent uses of this pattern by
grepping for atomic_inc_not_zero().

[ Side note: the module race does indicate that module loading and
  unloading is not properly serialized wrt sysfs information using the
  module mutex.  That may require further thought, but this is the
  correct fix at the kobject layer regardless. ]

Reported-analyzed-and-tested-by: Anatol Pomozov <anatol.pomozov@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoBtrfs: make sure nbytes are right after log replay
Josef Bacik [Fri, 5 Apr 2013 20:50:09 +0000 (20:50 +0000)]
Btrfs: make sure nbytes are right after log replay

While trying to track down a tree log replay bug I noticed that fsck was always
complaining about nbytes not being right for our fsynced file.  That is because
the new fsync stuff doesn't wait for ordered extents to complete, so the inodes
nbytes are not necessarily updated properly when we log it.  So to fix this we
need to set nbytes to whatever it is on the inode that is on disk, so when we
replay the extents we can just add the bytes that are being added as we replay
the extent.  This makes it work for the case that we have the wrong nbytes or
the case that we logged everything and nbytes is actually correct.  With this
I'm no longer getting nbytes errors out of btrfsck.

Cc: stable@vger.kernel.org
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
11 years agox86-32: Fix possible incomplete TLB invalidate with PAE pagetables
Dave Hansen [Fri, 12 Apr 2013 23:23:54 +0000 (16:23 -0700)]
x86-32: Fix possible incomplete TLB invalidate with PAE pagetables

This patch attempts to fix:

https://bugzilla.kernel.org/show_bug.cgi?id=56461

The symptom is a crash and messages like this:

chrome: Corrupted page table at address 34a03000
*pdpt = 0000000000000000 *pde = 0000000000000000
Bad pagetable: 000f [#1] PREEMPT SMP

Ingo guesses this got introduced by commit 611ae8e3f520 ("x86/tlb:
enable tlb flush range support for x86") since that code started to free
unused pagetables.

On x86-32 PAE kernels, that new code has the potential to free an entire
PMD page and will clear one of the four page-directory-pointer-table
(aka pgd_t entries).

The hardware aggressively "caches" these top-level entries and invlpg
does not actually affect the CPU's copy.  If we clear one we *HAVE* to
do a full TLB flush, otherwise we might continue using a freed pmd page.
(note, we do this properly on the population side in pud_populate()).

This patch tracks whenever we clear one of these entries in the 'struct
mmu_gather', and ensures that we follow up with a full tlb flush.

BTW, I disassembled and checked that:

if (tlb->fullmm == 0)
and
if (!tlb->fullmm && !tlb->need_flush_all)

generate essentially the same code, so there should be zero impact there
to the !PAE case.

Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Artem S Tashkinov <t.artem@mailcity.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Linus Torvalds [Fri, 12 Apr 2013 22:26:42 +0000 (15:26 -0700)]
Merge git://git./linux/kernel/git/nab/target-pending

Pull SCSI target fixes from Nicholas Bellinger:
 "Here are remaining target-pending items for v3.9-rc7 code.

  The tcm_vhost patches are more than I'd usually include in a -rc7
  pull, but are changes required for v3.9 to work correctly with the
  pending vhost-scsi-pci QEMU upstream series merge.  (Paolo CC'ed)

  Plus Asias's conversion to use vhost_virtqueue->private_data + RCU for
  managing vhost-scsi endpoints has gotten alot of review + testing over
  the past weeks, and MST has ACKed the full series.

  Also, there is a target patch to fix a long-standing bug within
  control CDB handling with Standby/Offline/Transition ALUA port access
  states, that had been incorrectly rejecting the control CDBs required
  for LUN scan to work during these port group states.  CC'ing to
  stable."

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs
  tcm_vhost: Send bad target to guest when cmd fails
  tcm_vhost: Add vhost_scsi_send_bad_target() helper
  tcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq
  tcm_vhost: Remove double check of response
  tcm_vhost: Initialize vq->last_used_idx when set endpoint
  tcm_vhost: Use vq->private_data to indicate if the endpoint is setup
  tcm_vhost: Use ACCESS_ONCE for vs->vs_tpg[target] access

11 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Fri, 12 Apr 2013 22:18:56 +0000 (15:18 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a set of ten bug fixes (and two consisting of copyright year
  update and version number change) pretty much all of which involve
  either a crash or a hang except the removal of the random sleep from
  the qla2xxx driver (which is a coding error so bad, we want it gone
  before anyone has a chance to copy it)."

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  [SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put()
  [SCSI] libsas: fix handling vacant phy in sas_set_ex_phy()
  [SCSI] ibmvscsi: Fix slave_configure deadlock
  [SCSI] qla2xxx: Update the driver version to 8.04.00.13-k.
  [SCSI] qla2xxx: Remove debug code that msleeps for random duration.
  [SCSI] qla2xxx: Update copyright dates information in LICENSE.qla2xxx file.
  [SCSI] qla2xxx: Fix crash during firmware dump procedure.
  [SCSI] Revert "qla2xxx: Add setting of driver version string for vendor application."
  [SCSI] ipr: dlpar failed when adding an adapter back
  [SCSI] ipr: fix addition of abort command to HRRQ free queue
  [SCSI] st: Take additional queue ref in st_probe
  [SCSI] libsas: use right function to alloc smp response
  [SCSI] ipr: ipr_test_msi() fails when running with msi-x enabled adapter

11 years agoMerge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Fri, 12 Apr 2013 22:18:20 +0000 (15:18 -0700)]
Merge branch 'for-next' of git://git.samba.org/sfrench/cifs-2.6

Pull CIFS fix from Steve French:
 "Fixes a regression in cifs in which a password which begins with a
  comma is parsed incorrectly as a blank password"

* 'for-next' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: Allow passwords which begin with a delimitor

11 years agoftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section
Steven Rostedt (Red Hat) [Fri, 12 Apr 2013 20:40:13 +0000 (16:40 -0400)]
ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section

As ftrace_filter_lseek is now used with ftrace_pid_fops, it needs to
be moved out of the #ifdef CONFIG_DYNAMIC_FTRACE section as the
ftrace_pid_fops is defined when DYNAMIC_FTRACE is not.

Cc: stable@vger.kernel.org
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
11 years agotracing: Fix possible NULL pointer dereferences
Namhyung Kim [Thu, 11 Apr 2013 06:55:01 +0000 (15:55 +0900)]
tracing: Fix possible NULL pointer dereferences

Currently set_ftrace_pid and set_graph_function files use seq_lseek
for their fops.  However seq_open() is called only for FMODE_READ in
the fops->open() so that if an user tries to seek one of those file
when she open it for writing, it sees NULL seq_file and then panic.

It can be easily reproduced with following command:

  $ cd /sys/kernel/debug/tracing
  $ echo 1234 | sudo tee -a set_ftrace_pid

In this example, GNU coreutils' tee opens the file with fopen(, "a")
and then the fopen() internally calls lseek().

Link: http://lkml.kernel.org/r/1365663302-2170-1-git-send-email-namhyung@kernel.org
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: stable@vger.kernel.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
11 years agoMerge tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Linus Torvalds [Fri, 12 Apr 2013 14:45:17 +0000 (07:45 -0700)]
Merge tag 'sound-3.9' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This contains a few small ASoC fixes (wm8903, wm5102, samsung-i2s,
  tegra, and soc-compress) and an endian fix for NI USB-audio devices,
  update for Mark's e-mail address.

  No scary changes, AFAIS."

* tag 'sound-3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  MAINTAINERS: Update e-mail address
  ASoC: wm5102: Correct lookup of arizona struct in SYSCLK event
  ASoC: wm8903: Fix the bypass to HP/LINEOUT when no DAC or ADC is running
  ALSA: usb-audio: fix endianness bug in snd_nativeinstruments_*
  ASoC: tegra: Don't claim to support PCM pause and resume
  ASoC: Samsung: set drvdata before adding secondary device
  ASoC: Samsung: return error if drvdata is not set
  ASoC: compress: Cancel delayed power down if needed
  ASoC: core: Fix to check return value of snd_soc_update_bits_locked()

11 years agoMerge tag 'asoc-maintainers-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel...
Takashi Iwai [Fri, 12 Apr 2013 11:53:35 +0000 (13:53 +0200)]
Merge tag 'asoc-maintainers-v3.9-rc6' of git://git./linux/kernel/git/broonie/sound into for-linus

MAINTAINERS: Update e-mail address

Update the e-mail address I use for subsystems.

11 years agoMAINTAINERS: Update e-mail address
Mark Brown [Fri, 12 Apr 2013 10:39:57 +0000 (11:39 +0100)]
MAINTAINERS: Update e-mail address

Update the e-mail address I use for subsystems.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
11 years agoMerge tag 'asoc-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Takashi Iwai [Fri, 12 Apr 2013 08:27:39 +0000 (10:27 +0200)]
Merge tag 'asoc-v3.9-rc6' of git://git./linux/kernel/git/broonie/sound into for-linus

ASoC: Updates for v3.9

A few updates, more than I'd like, fixing some relatively small issues
but mostly driver specific ones.  Nothing wildly exciting so if it
doesn't make v3.9 it won't be the end of the world but it'd be nice.

11 years agox86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set
Boris Ostrovsky [Thu, 11 Apr 2013 17:59:52 +0000 (13:59 -0400)]
x86/mm: Flush lazy MMU when DEBUG_PAGEALLOC is set

When CONFIG_DEBUG_PAGEALLOC is set page table updates made by
kernel_map_pages() are not made visible (via TLB flush)
immediately if lazy MMU is on. In environments that support lazy
MMU (e.g. Xen) this may lead to fatal page faults, for example,
when zap_pte_range() needs to allocate pages in
__tlb_remove_page() -> tlb_next_batch().

Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: konrad.wilk@oracle.com
Link: http://lkml.kernel.org/r/1365703192-2089-1-git-send-email-boris.ostrovsky@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agox86/mm/cpa/selftest: Fix false positive in CPA self test
Andrea Arcangeli [Thu, 11 Apr 2013 13:36:09 +0000 (15:36 +0200)]
x86/mm/cpa/selftest: Fix false positive in CPA self test

If the pmd is not present, _PAGE_PSE will not be set anymore.
Fix the false positive.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Stefan Bader <stefan.bader@canonical.com>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Link: http://lkml.kernel.org/r/1365687369-30802-1-git-send-email-aarcange@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agoperf: Fix error return code
Wei Yongjun [Fri, 12 Apr 2013 03:05:54 +0000 (11:05 +0800)]
perf: Fix error return code

Fix to return -ENOMEM in the allocation error case instead of 0
(if pmu_bus_running == 1), as done elsewhere in this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Cc: a.p.zijlstra@chello.nl
Cc: paulus@samba.org
Cc: acme@ghostprotocols.net
Link: http://lkml.kernel.org/r/CAPgLHd8j_fWcgqe%3DKLWjpBj%2B%3Do0Pw6Z-SEq%3DNTPU08c2w1tngQ@mail.gmail.com
[ Tweaked the error code setting placement and the changelog. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agodrm/fb-helper: Fix locking in drm_fb_helper_hotplug_event
Daniel Vetter [Thu, 11 Apr 2013 14:26:55 +0000 (14:26 +0000)]
drm/fb-helper: Fix locking in drm_fb_helper_hotplug_event

Driver's and ->fill_modes functions are allowed to grab crtc mutexes
(for e.g. load detect). Hence we need to first only grab the general
kms mutex, and only in a second step grab all locks to do the
modesets.

This prevents a deadlock on my gm45 in the tv load detect code called
by drm_helper_probe_single_connector_modes.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
11 years agoudl: handle EDID failure properly.
Dave Airlie [Fri, 12 Apr 2013 03:25:20 +0000 (13:25 +1000)]
udl: handle EDID failure properly.

Don't oops seems proper.

Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
11 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Fri, 12 Apr 2013 03:35:11 +0000 (20:35 -0700)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dmaengine fixes from Vinod Koul:
 "The first one fixes issue in pl330 to check for DT compatible and
  the second one fixes omap-dma to start without delay"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: omap-dma: Start DMA without delay for cyclic channels
  DMA: PL330: Add check if device tree compatible

11 years agoMerge tag 'pm-3.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 12 Apr 2013 03:33:38 +0000 (20:33 -0700)]
Merge tag 'pm-3.9-rc7' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:

 - System reboot/halt fix related to CPU offline ordering from Huacai
   Chen.

 - intel_pstate driver fix for a delay time computation error
   occasionally crashing systems using it from Dirk Brandewie.

* tag 'pm-3.9-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / reboot: call syscore_shutdown() after disable_nonboot_cpus()
  cpufreq / intel_pstate: Set timer timeout correctly

11 years agoMerge tag 'regmap-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Linus Torvalds [Fri, 12 Apr 2013 01:22:20 +0000 (18:22 -0700)]
Merge tag 'regmap-v3.9-rc6' of git://git./linux/kernel/git/broonie/regmap

Pull regmap revert from Mark Brown:
 "regmap: Back out work buffer fix

  This reverts commit bc8ce4 (regmap: don't corrupt work buffer in
  _regmap_raw_write()) since it turns out that it can cause issues when
  taken in isolation from the other changes in -next that lead to its
  discovery.  On the basis that nobody noticed the problems for quite
  some time without that subsequent work let's drop it from v3.9."

* tag 'regmap-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap: Back out work buffer fix

11 years agoMerge tag 'gpio-fixes-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 12 Apr 2013 01:21:45 +0000 (18:21 -0700)]
Merge tag 'gpio-fixes-v3.9-rc6' of git://git./linux/kernel/git/linusw/linux-gpio

Pull GPIO fix from Linus Walleij:
 "Oneliner fix for the PCA 953x driver."

* tag 'gpio-fixes-v3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  gpio: pca953x: fix irq_domain_add_simple usage

11 years agoMerge tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Fri, 12 Apr 2013 01:20:31 +0000 (18:20 -0700)]
Merge tag 'arm-soc-fixes' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC bug fixes from Arnd Bergmann:
 "A little later during the week than the last few pull requests, since
  there was very little that came in before 3.9-rc6.  At least things
  have calmed down again here.

  Some important bug fixes that came in over the last 10 days, mostly
  mvebu and imx:

   - Multiple regressions on i.mx following the conversion of the clock
     code, hopefully the last we are seeing of those.
   - a regression in the mvebu irq handling code
   - An incorrect register offset in the rewritten s3c24xx irq code.
   - Two bugs in setting up the iomega_ix2_200 machine
   - Turning on an extra bus clock on imx
   - A MAINTAINERS file entry for Roland Stigge"

* tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  arm: mvebu: Fix the irq map function in SMP mode
  Fix GE0/GE1 init on ix2-200 as GE0 has no PHY
  ARM: S3C24XX: Fix interrupt pending register offset of the EINT controller
  ARM: S3C24XX: Correct NR_IRQS definition for s3c2440
  ARM i.MX6: Fix ldb_di clock selection
  ARM: imx: provide twd clock lookup from device tree
  ARM: imx35 Bugfix admux clock
  ARM: clk-imx35: Bugfix iomux clock
  ARM: mxs: Slow down the I2C clock speed
  MAINTAINERS: Add maintainer for LPC32xx
  ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED

11 years ago[SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put()
Wei Yongjun [Sun, 2 Dec 2012 13:33:24 +0000 (08:33 -0500)]
[SCSI] lpfc: fix potential NULL pointer dereference in lpfc_sli4_rq_put()

The dereference to 'put_index' should be moved below the NULL test.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
11 years agogpio: pca953x: fix irq_domain_add_simple usage
Alexandre Belloni [Wed, 3 Apr 2013 17:40:14 +0000 (19:40 +0200)]
gpio: pca953x: fix irq_domain_add_simple usage

We actually have to pass chip as the host_data parameter of
irq_domain_add_simple() as later on, it is used to initialize chip_data
in pca953x_gpio_irq_map(). Failing to do so is leading to a NULL pointer
dereference after calling irq_data_get_irq_chip_data() in
pca953x_irq_mask(), pca953x_irq_unmask(), pca953x_irq_bus_lock(),
pca953x_irq_bus_sync_unlock() and pca953x_irq_set_type().

Fixes regression introduced by commit
0e8f2fdacf1d44651aa7e57063c76142d1f4988b (gpio: pca953x: use simple
irqdomain)

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
11 years agoMerge remote-tracking branch 'asoc/fix/wm8903' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:31 +0000 (18:00 +0100)]
Merge remote-tracking branch 'asoc/fix/wm8903' into tmp

11 years agoMerge remote-tracking branch 'asoc/fix/tegra' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:30 +0000 (18:00 +0100)]
Merge remote-tracking branch 'asoc/fix/tegra' into tmp

11 years agoMerge remote-tracking branch 'asoc/fix/samsung' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:29 +0000 (18:00 +0100)]
Merge remote-tracking branch 'asoc/fix/samsung' into tmp

11 years agoMerge remote-tracking branch 'asoc/fix/core' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:28 +0000 (18:00 +0100)]
Merge remote-tracking branch 'asoc/fix/core' into tmp

11 years agoMerge remote-tracking branch 'asoc/fix/compress' into tmp
Mark Brown [Thu, 11 Apr 2013 17:00:27 +0000 (18:00 +0100)]
Merge remote-tracking branch 'asoc/fix/compress' into tmp

11 years agoMerge tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper...
Arnd Bergmann [Thu, 11 Apr 2013 14:55:29 +0000 (16:55 +0200)]
Merge tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper/linux into fixes

From Jason Cooper <jason@lakedaemon.net>:

mvebu fixes for v3.9 round 3

 - Kirkwood
    - a couple of small fixes for the Iomega ix2-200 board (ether and led)
 - mvebu
    - allow GPIO button to work on Mirabox when running SMP

* tag 'mvebu_fixes_for_v3.9_round3' of git://git.infradead.org/users/jcooper/linux:
  arm: mvebu: Fix the irq map function in SMP mode
  Fix GE0/GE1 init on ix2-200 as GE0 has no PHY
  ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
11 years agotarget: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs
Nicholas Bellinger [Wed, 10 Apr 2013 22:00:27 +0000 (15:00 -0700)]
target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs

This patch fixes a bug where a handful of informational / control CDBs
that should be allowed during ALUA access state Standby/Offline/Transition
where incorrectly returning CHECK_CONDITION + ASCQ_04H_ALUA_TG_PT_*.

This includes INQUIRY + REPORT_LUNS, which would end up preventing LUN
registration when LUN scanning occured during these ALUA access states.

Cc: Hannes Reinecke <hare@suse.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotcm_vhost: Send bad target to guest when cmd fails
Asias He [Wed, 10 Apr 2013 07:06:16 +0000 (15:06 +0800)]
tcm_vhost: Send bad target to guest when cmd fails

Send bad target to guest in case:
1) we can not allocate the cmd
2) fail to submit the cmd

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotcm_vhost: Add vhost_scsi_send_bad_target() helper
Asias He [Wed, 10 Apr 2013 07:06:15 +0000 (15:06 +0800)]
tcm_vhost: Add vhost_scsi_send_bad_target() helper

Share the send bad target code with other use cases.

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq
Asias He [Wed, 10 Apr 2013 07:06:14 +0000 (15:06 +0800)]
tcm_vhost: Fix tv_cmd leak in vhost_scsi_handle_vq

If we fail to submit the allocated tv_vmd to tcm_vhost_submission_work,
we will leak the tv_vmd. Free tv_vmd on fail path.

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agotcm_vhost: Remove double check of response
Asias He [Wed, 10 Apr 2013 07:06:13 +0000 (15:06 +0800)]
tcm_vhost: Remove double check of response

We did the length of response check twice.

Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
11 years agox86/mm/cpa: Convert noop to functional fix
Andrea Arcangeli [Wed, 10 Apr 2013 13:28:25 +0000 (15:28 +0200)]
x86/mm/cpa: Convert noop to functional fix

Commit:

  a8aed3e0752b ("x86/mm/pageattr: Prevent PSE and GLOABL leftovers to confuse pmd/pte_present and pmd_huge")

introduced a valid fix but one location that didn't trigger the bug that
lead to finding those (small) problems, wasn't updated using the
right variable.

The wrong variable was also initialized for no good reason, that
may have been the source of the confusion. Remove the noop
initialization accordingly.

Commit a8aed3e0752b also erroneously removed one canon_pgprot pass meant
to clear pmd bitflags not supported in hardware by older CPUs, that
automatically gets corrected by this patch too by applying it to the right
variable in the new location.

Reported-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Borislav Petkov <bp@alien8.de>
Cc: Andy Whitcroft <apw@canonical.com>
Cc: Mel Gorman <mgorman@suse.de>
Link: http://lkml.kernel.org/r/1365600505-19314-1-git-send-email-aarcange@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
11 years agoMerge tag 'char-misc-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Wed, 10 Apr 2013 23:00:53 +0000 (16:00 -0700)]
Merge tag 'char-misc-3.9-rc6' of git://git./linux/kernel/git/gregkh/char-misc

Pull char/misc fix from Greg Kroah-Hartman:
 "Here is a single Kconfig dependancy build fix for 3.9.

  It's been in linux-next for a while, and fixes a problem that has been
  reported multiple times."

* tag 'char-misc-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  misc/vmw_vmci: Add dependency on CONFIG_NET

11 years agoMerge tag 'tty-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Wed, 10 Apr 2013 22:59:12 +0000 (15:59 -0700)]
Merge tag 'tty-3.9-rc6' of git://git./linux/kernel/git/gregkh/tty

Pull tty/serial fixes from Greg Kroah-Hartman:
 "Here are 4 small tty/serial fixes for 3.9.

  One fixes a bug where we broke the documentation build, and the others
  fix reported problems in some serial drivers.

  All have been in linux-next for a while"

* tag 'tty-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  tty: mxser: fix cycle termination condition in mxser_probe() and mxser_module_init()
  Revert "tty/8250_pnp: serial port detection regression since v3.7"
  OMAP/serial: Revert bad fix of Rx FIFO threshold granularity
  tty: Documentation: fix a path in a DocBook template

11 years agoMerge tag 'stable/for-linus-3.9-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 10 Apr 2013 22:57:33 +0000 (15:57 -0700)]
Merge tag 'stable/for-linus-3.9-rc6-tag' of git://git./linux/kernel/git/konrad/xen

Pull Xen fixes from Konrad Rzeszutek Wilk:
 "Two bug-fixes:
   - Early bootup issue found on DL380 machines
   - Fix for the timer interrupt not being processed right awaym leading
     to quite delayed time skew on certain workloads"

* tag 'stable/for-linus-3.9-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/mmu: On early bootup, flush the TLB when changing RO->RW bits Xen provided pagetables.
  xen/events: Handle VIRQ_TIMER before any other hardirq in event loop.

11 years agoMerge tag 'trace-fixes-3.9-rc-v2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 10 Apr 2013 22:56:57 +0000 (15:56 -0700)]
Merge tag 'trace-fixes-3.9-rc-v2' of git://git./linux/kernel/git/rostedt/linux-trace

Pull tracing fix from Steven Rostedt:
 "Namhyung Kim fixed a long standing bug that can cause a kernel panic.

  If the function profiler fails to allocate memory for everything, it
  will do a double free on the same pointer which can cause a panic"

* tag 'trace-fixes-3.9-rc-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  tracing: Fix double free when function profile init failed

11 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Wed, 10 Apr 2013 21:15:27 +0000 (14:15 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) cfg80211_conn_scan() must be called with the sched_scan_mutex, fix
    from Artem Savkov.

 2) Fix regression in TCP ICMPv6 processing, we do not want to treat
    redirects as socket errors, from Christoph Paasch.

 3) Fix several recvmsg() msg_name kernel memory leaks into userspace,
    in ATM, AX25, Bluetooth, CAIF, IRDA, s390 IUCV, L2TP, LLC, Netrom,
    NFC, Rose, TIPC, and VSOCK.  From Mathias Krause and Wei Yongjun.

 4) Fix AF_IUCV handling of segmented SKBs in recvmsg(), from Ursula
    Braun and Eric Dumazet.

 5) CAN gw.c code does kfree() on SLAB cache memory, use
    kmem_cache_free() instead.  Fix from Wei Yongjun.

 6) Fix LSM regression on TCP SYN/ACKs, some LSMs such as SELINUX want
    an skb->sk socket context available for these packets, but nothing
    else requires it.  From Eric Dumazet and Paul Moore.

 7) Fix ipv4 address lifetime processing so that we don't perform
    sleepable acts inside of rcu_read_lock() sections, do them in an
    rtnl_lock() section instead.  From Jiri Pirko.

 8) mvneta driver accidently sets HW features after device registry, it
    should do so beforehand.  Fix from Willy Tarreau.

 9) Fix bonding unload races more correctly, from Nikolay Aleksandrov
    and Veaceslav Falico.

10) rtnl_dump_ifinfo() and rtnl_calcit() invoke nlmsg_parse() with wrong
    header size argument.  Fix from Michael Riesch.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (44 commits)
  lsm: add the missing documentation for the security_skb_owned_by() hook
  bnx2x: Prevent null pointer dereference in AFEX mode
  e100: Add dma mapping error check
  selinux: add a skb_owned_by() hook
  can: gw: use kmem_cache_free() instead of kfree()
  netrom: fix invalid use of sizeof in nr_recvmsg()
  qeth: fix qeth_wait_for_threads() deadlock for OSN devices
  af_iucv: fix recvmsg by replacing skb_pull() function
  rtnetlink: Call nlmsg_parse() with correct header length
  bonding: fix bonding_masters race condition in bond unloading
  Revert "bonding: remove sysfs before removing devices"
  net: mvneta: enable features before registering the driver
  hyperv: Fix RNDIS send_completion code path
  hyperv: Fix a kernel warning from netvsc_linkstatus_callback()
  net: ipv4: fix schedule while atomic bug in check_lifetime()
  net: ipv4: reset check_lifetime_work after changing lifetime
  bnx2x: Fix KR2 rapid link flap
  sctp: remove 'sridhar' from maintainers list
  VSOCK: Fix missing msg_namelen update in vsock_stream_recvmsg()
  VSOCK: vmci - fix possible info leak in vmci_transport_dgram_dequeue()
  ...

11 years agoMerge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming
Linus Torvalds [Wed, 10 Apr 2013 21:14:27 +0000 (14:14 -0700)]
Merge tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming

Pull C6X fix from Mark Salter.

Final (?) fix from the barrier discussion.

* tag 'for-linus' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming:
  add memory barrier to arch_local_irq_restore

11 years agocifs: Allow passwords which begin with a delimitor
Sachin Prabhu [Tue, 9 Apr 2013 17:17:41 +0000 (18:17 +0100)]
cifs: Allow passwords which begin with a delimitor

Fixes a regression in cifs_parse_mount_options where a password
which begins with a delimitor is parsed incorrectly as being a blank
password.

Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
11 years agolsm: add the missing documentation for the security_skb_owned_by() hook
Paul Moore [Wed, 10 Apr 2013 19:34:14 +0000 (15:34 -0400)]
lsm: add the missing documentation for the security_skb_owned_by() hook

Unfortunately we didn't catch the missing comments earlier when the
patch was merged.

Signed-off-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>