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7 years agoMerge remote-tracking branches 'spi/topic/armada', 'spi/topic/ath79', 'spi/topic...
Mark Brown [Sun, 19 Feb 2017 16:40:55 +0000 (16:40 +0000)]
Merge remote-tracking branches 'spi/topic/armada', 'spi/topic/ath79', 'spi/topic/bcm-qspi' and 'spi/topic/bcm53xx' into spi-next

7 years agoMerge remote-tracking branch 'spi/topic/dma' into spi-next
Mark Brown [Sun, 19 Feb 2017 16:40:55 +0000 (16:40 +0000)]
Merge remote-tracking branch 'spi/topic/dma' into spi-next

7 years agoMerge remote-tracking branch 'spi/topic/core' into spi-next
Mark Brown [Sun, 19 Feb 2017 16:40:55 +0000 (16:40 +0000)]
Merge remote-tracking branch 'spi/topic/core' into spi-next

7 years agoMerge remote-tracking branches 'spi/fix/pxa2xx', 'spi/fix/rspi' and 'spi/fix/s3c64xx...
Mark Brown [Sun, 19 Feb 2017 16:40:53 +0000 (16:40 +0000)]
Merge remote-tracking branches 'spi/fix/pxa2xx', 'spi/fix/rspi' and 'spi/fix/s3c64xx' into spi-linus

7 years agoMerge tag 'spi-fix-v4.10-rc4' into spi-linus
Mark Brown [Sun, 19 Feb 2017 16:40:52 +0000 (16:40 +0000)]
Merge tag 'spi-fix-v4.10-rc4' into spi-linus

spi: Fixes for v4.10

The usual small smattering of driver specific fixes.  A few bits that
stand out here:

 - The R-Car patches adding fallbacks are just adding new compatible
   strings to the driver so that device trees are written in a more
   robustly future proof fashion, this isn't strictly a fix but it's
   just new IDs and it's better to get it into mainline sooner to
   improve the ABI.
 - The DesignWare "switch to new API part 2" patch is actually a
   misleadingly titled fix for a bit that got missed in the original
   conversion.

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# gpg: Good signature from "Mark Brown <broonie@sirena.org.uk>" [ultimate]
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7 years agospi: armada-3700: Remove spi_master_put in a3700_spi_remove()
Wei Yongjun [Sun, 5 Feb 2017 15:49:40 +0000 (15:49 +0000)]
spi: armada-3700: Remove spi_master_put in a3700_spi_remove()

The call to spi_master_put() in a3700_spi_remove() is redundant since
the master is registered using devm_spi_register_master() and no
reference hold by using spi_master_get() in a3700_spi_remove().

This is detected by Coccinelle semantic patch.

Fixes: 5762ab71eb24 ("spi: Add support for Armada 3700 SPI Controller")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: rspi: Replaces "n" by "len" in qspi_transfer_*()
DongCV [Wed, 15 Feb 2017 10:50:52 +0000 (19:50 +0900)]
spi: rspi: Replaces "n" by "len" in qspi_transfer_*()

This patch replaced "n" by "len" bytes of data in qspi_transfer_in() and
qspi_transfer_out() function. This will make improving readability.

Signed-off-by: DongCV <cv-dong@jinso.co.jp>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: rspi: Fixes bogus received byte in qspi_transfer_in()
DongCV [Wed, 15 Feb 2017 10:50:51 +0000 (19:50 +0900)]
spi: rspi: Fixes bogus received byte in qspi_transfer_in()

In qspi_transfer_in(), when receiving the last n (or len) bytes of data,
one bogus byte was written in the receive buffer.
This code leads to a buffer overflow.

"jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found
at 0x03b40000: 0x1900 instead
jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found
at 0x03b40004: 0x000c instead"

The error message above happens when trying to mount, unmount,
and remount a jffs2-formatted device.
This patch removed the bogus write to fixes: 3be09bec42a800d4
"spi: rspi: supports 32bytes buffer for DUAL and QUAD"

And here is Geert's comment:

"spi: rspi: Fix bogus received byte in qspi_transfer_in()
When there are less than QSPI_BUFFER_SIZE remaining bytes to be received,
qspi_transfer_in() writes one bogus byte in the receive buffer, possibly
leading to a buffer overflow.
This can be reproduced by mounting, unmounting, and remounting a
jffs2-formatted device, causing lots of warnings like:

"jffs2: jffs2_scan_eraseblock(): Magic bitmask 0x1985 not found
at 0x03b40000: 0x1900 instead"

Remove the bogus write to fix this. "

Signed-off-by: DongCV <cv-dong@jinso.co.jp>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: bcm-qspi: Remove unnecessary platform_set_drvdata()
Wei Yongjun [Thu, 9 Feb 2017 15:32:21 +0000 (15:32 +0000)]
spi: bcm-qspi: Remove unnecessary platform_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: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: bcm-qspi: Fix bcm_qspi_bspi_read() performance
Kamal Dasu [Wed, 8 Feb 2017 20:15:04 +0000 (15:15 -0500)]
spi: bcm-qspi: Fix bcm_qspi_bspi_read() performance

Let bcm_qspi_bspi_flash_read() return all the requested bytes by breaking
up the reads for BSPI block into optimal chunks size that a BSPI block can
handle.

Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: s3c64xx: fix inconsistency between binding and driver
Andi Shyti [Fri, 10 Feb 2017 02:20:19 +0000 (11:20 +0900)]
spi: s3c64xx: fix inconsistency between binding and driver

Commit a92e7c3d82a1 ("spi: s3c64xx: consider the case when the CS
line is not connected") introduced an inconsistency between the
binding, where the disconnected CS line was marked as
'no-cs-readback', and the driver.

The driver is erroneously checking for that attribute with
property name of 'broken-cs'.

Check for 'no-cs-readback' in the driver as well.

Fixes: a92e7c3d82a1 ("spi: s3c64xx: consider the case when the CS line is not connected")
Signed-off-by: Andi Shyti <andi.shyti@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
7 years agospi: armada-3700: Remove .owner field for driver
Wei Yongjun [Tue, 7 Feb 2017 14:30:03 +0000 (14:30 +0000)]
spi: armada-3700: Remove .owner field for driver

Remove .owner field if calls are used which set it automatically.

Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: bcm-qspi: Added mspi read fallback in bcm_qspi_flash_read()
Kamal Dasu [Mon, 30 Jan 2017 21:11:16 +0000 (16:11 -0500)]
spi: bcm-qspi: Added mspi read fallback in bcm_qspi_flash_read()

Added mspi read fallback under certain circumstances like unaligned
buffer, address on short reads. Also takes care of version 3.0 spi
controller where flash address crosses 4MB boundary on transfers the
driver resorts to mspi reads.

Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: fix device-node leaks
Johan Hovold [Mon, 30 Jan 2017 16:47:05 +0000 (17:47 +0100)]
spi: fix device-node leaks

Make sure to release the device-node reference taken in
of_register_spi_device() on errors and when deregistering the device.

Fixes: 284b01897340 ("spi: Add OF binding support for SPI busses")
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: mediatek: Only do dma for 4-byte aligned buffers
Daniel Kurtz [Thu, 26 Jan 2017 16:21:54 +0000 (00:21 +0800)]
spi: mediatek: Only do dma for 4-byte aligned buffers

Mediatek SPI DMA only works when tx and rx buffer addresses are 4-byte
aligned.

Unaligned DMA transactions appeared to work previously, since we the
spi core was incorrectly using the spi_master device for dma, which
had a 0 dma_mask, and therefore the swiotlb dma map operations were
falling back to using bounce buffers.  Since each DMA transaction would
use its own buffer, the mapped starting address of each transaction was
always aligned.  When doing real DMA, the mapped address will share the
alignment of the raw tx/rx buffer provided by the SPI user, which may or
may not be aligned.

If a buffer is not aligned, we cannot use DMA, and must use FIFO based
transaction instead.

So, this patch implements a scheme that allows using the FIFO for
arbitrary length transactions (larger than the 32-byte FIFO size) by
reloading the FIFO in the interrupt handler.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Cc: Leilk Liu <leilk.liu@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: When no dma_chan map buffers with spi_master's parent
Daniel Kurtz [Thu, 26 Jan 2017 16:21:53 +0000 (00:21 +0800)]
spi: When no dma_chan map buffers with spi_master's parent

Back before commit 1dccb598df54 ("arm64: simplify dma_get_ops"), for
arm64, devices for which dma_ops were not explicitly set were automatically
configured to use swiotlb_dma_ops, since this was hard-coded as the
global "dma_ops" in arm64_dma_init().

Now that global "dma_ops" has been removed, all devices much have their
dma_ops explicitly set by a call to arch_setup_dma_ops(), otherwise the
device is assigned dummy_dma_ops, and thus calls to map_sg for such a
device will fail (return 0).

Mediatek SPI uses DMA but does not use a dma channel.  Support for this
was added by commit c37f45b5f1cd ("spi: support spi without dma channel
to use can_dma()"), which uses the master_spi dev to DMA map buffers.

The master_spi device is not a platform device, rather it is created
in spi_alloc_device(), and therefore its dma_ops are never set.

Therefore, when the mediatek SPI driver when it does DMA (for large SPI
transactions > 32 bytes), SPI will use spi_map_buf()->dma_map_sg() to
map the buffer for use in DMA.  But dma_map_sg()->dma_map_sg_attrs() returns
0, because ops->map_sg is dummy_dma_ops->__dummy_map_sg, and hence
spi_map_buf() returns -ENOMEM (-12).

Fix this by using the real spi_master's parent device which should be a
real physical device with DMA properties.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Fixes: c37f45b5f1cd ("spi: support spi without dma channel to use can_dma()")
Cc: Leilk Liu <leilk.liu@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: pxa2xx: Add support for Intel Gemini Lake
David E. Box [Thu, 19 Jan 2017 14:25:21 +0000 (16:25 +0200)]
spi: pxa2xx: Add support for Intel Gemini Lake

Gemini Lake reuses the same LPSS SPI configuration as Broxton

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agoMerge remote-tracking branch 'spi/fix/sh-msiof' into spi-linus
Mark Brown [Tue, 17 Jan 2017 18:48:13 +0000 (18:48 +0000)]
Merge remote-tracking branch 'spi/fix/sh-msiof' into spi-linus

7 years agoMerge remote-tracking branches 'spi/fix/armada', 'spi/fix/axi', 'spi/fix/davinci...
Mark Brown [Tue, 17 Jan 2017 18:48:11 +0000 (18:48 +0000)]
Merge remote-tracking branches 'spi/fix/armada', 'spi/fix/axi', 'spi/fix/davinci', 'spi/fix/dw', 'spi/fix/fsl-dspi' and 'spi/fix/pxa2xx' into spi-linus

7 years agospi: fsl: Combine substrings for two messages
Markus Elfring [Fri, 13 Jan 2017 12:50:21 +0000 (13:50 +0100)]
spi: fsl: Combine substrings for two messages

The script "checkpatch.pl" pointed information out like the following.

WARNING: quoted string split across lines

Thus fix the affected source code places.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: fsl: Use kcalloc() in of_fsl_spi_get_chipselects()
Markus Elfring [Fri, 13 Jan 2017 12:33:02 +0000 (13:33 +0100)]
spi: fsl: Use kcalloc() in of_fsl_spi_get_chipselects()

A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus reuse the corresponding function "kcalloc".

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: fsl: Use kmalloc_array() in of_fsl_spi_get_chipselects()
Markus Elfring [Fri, 13 Jan 2017 12:37:25 +0000 (13:37 +0100)]
spi: fsl: Use kmalloc_array() in of_fsl_spi_get_chipselects()

A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kmalloc_array".

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: Use kcalloc() in spi_register_board_info()
Markus Elfring [Fri, 13 Jan 2017 11:28:04 +0000 (12:28 +0100)]
spi: Use kcalloc() in spi_register_board_info()

A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus reuse the corresponding function "kcalloc".

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: davinci: use dma_mapping_error()
Kevin Hilman [Thu, 12 Jan 2017 02:18:40 +0000 (18:18 -0800)]
spi: davinci: use dma_mapping_error()

The correct error checking for dma_map_single() is to use
dma_mapping_error().

Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: spi-axi: Free resources on error path
Christophe JAILLET [Mon, 9 Jan 2017 00:02:47 +0000 (01:02 +0100)]
spi: spi-axi: Free resources on error path

We should go to 'err_put_master' here instead of returning directly.
Otherwise a call to 'spi_master_put' is missing.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: bcm53xx: (re)license code to the GPL v2
Rafał Miłecki [Thu, 29 Dec 2016 19:13:13 +0000 (20:13 +0100)]
spi: bcm53xx: (re)license code to the GPL v2

My intention was to release this code under GPL v2 license. For some
reason my initial commit 0fc6a323e191 ("spi: bcm53xx: driver for SPI
controller on Broadcom bcma SoC") totally missed licensing info.
MODULE_LICENSE was later added by Axel specifying "GNU Public License
v2 or later".

This patch clarifies situation by adding a proper header (with Copyright
line) and adjusting MODULE_LICENSE. It should be acked by every driver
contributor.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Nicholas Mc Guire <hofrat@osadl.org>
Reviewed-by: Jingoo Han <jingoohan1@gmail.com>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Acked-by: Joe Perches <joe@perches.com>
Acked-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Vaishali Thakkar <vaishali.thakkar@oracle.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: pxa2xx: add missed break
Andy Shevchenko [Mon, 2 Jan 2017 11:44:28 +0000 (13:44 +0200)]
spi: pxa2xx: add missed break

The commit 7c7289a40425 ("spi: pxa2xx: Default thresholds to PXA
configuration") while splitting up CE4100 code obviously missed a break
condition in one chunk. Add it here.

Looks like we have no active user of CE4100, though better to fix this later
than never.

Fixes: commit 7c7289a40425 ("spi: pxa2xx: Default thresholds to PXA configuration")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: dw-mid: switch to new dmaengine_terminate_* API (part 2)
Andy Shevchenko [Tue, 3 Jan 2017 13:48:20 +0000 (15:48 +0200)]
spi: dw-mid: switch to new dmaengine_terminate_* API (part 2)

The commit a3ff9582369e ("spi: dw-mid: switch to new dmaengine_terminate_*
API") converted mid_spi_dma_exit() but missed mid_spi_dma_stop().

This is follow up to convert the rest.

Fixes: a3ff9582369e ("spi: dw-mid: switch to new dmaengine_terminate_* API")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: armada-3700: Coding style fixes
Romain Perier [Wed, 21 Dec 2016 10:10:29 +0000 (11:10 +0100)]
spi: armada-3700: Coding style fixes

The following warning are reported by checkpatch.pl:

CHECK: Alignment should match open parenthesis
+static void a3700_spi_transfer_setup(struct spi_device *spi,
+                                   struct spi_transfer *xfer)

WARNING: Missing a blank line after declarations
+                       u32 data = le32_to_cpu(val);
+                       memcpy(a3700_spi->rx_buf, &data, 4);

total: 0 errors, 1 warnings, 1 checks, 923 lines checked

Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: armada-3700: Replaced raw values for nbits by the SPI macros
Romain Perier [Wed, 21 Dec 2016 10:10:30 +0000 (11:10 +0100)]
spi: armada-3700: Replaced raw values for nbits by the SPI macros

Currently, function a3700_spi_pin_mode_set() configures the SPI transfer
mode according to the value passed as second argument. This value is
detected using the raw values from a switch case.

This commit replaces these raw values by the corresponding macro
constants in linux/spi/spi.h

Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: dw: Make debugfs name unique between instances
Phil Reid [Thu, 22 Dec 2016 09:18:12 +0000 (17:18 +0800)]
spi: dw: Make debugfs name unique between instances

Some system have multiple dw devices. Currently the driver uses a
fixed name for the debugfs dir. Append dev name to the debugfs dir
name to make it unique.

Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: bcm53xx: set of_node to let DT specify device(s)
Rafał Miłecki [Thu, 29 Dec 2016 16:27:55 +0000 (17:27 +0100)]
spi: bcm53xx: set of_node to let DT specify device(s)

Setting of_node of master's dev seems to be a common way of letting it
work nicely with DT. This allows specifying device there instead of
hardcoding one in the driver code.

This was successfully tested with commit 1b47b98acce2 ("ARM: BCM5301X:
Add DT entry for SPI controller and NOR flash")

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: bcm-qspi: Enable the driver on BMIPS_GENERIC
Jaedon Shin [Fri, 30 Dec 2016 06:30:00 +0000 (15:30 +0900)]
spi: bcm-qspi: Enable the driver on BMIPS_GENERIC

The Broadcom BCM7XXX ARM and MIPS based SoCs share a similar hardware
block for SPI.

Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: sh-msiof: Do not use C++ style comment
Simon Horman [Tue, 20 Dec 2016 10:21:16 +0000 (11:21 +0100)]
spi: sh-msiof: Do not use C++ style comment

4286db8456f4 ("spi: sh-msiof: Add R-Car Gen 2 and 3 fallback bindings")
added a C++ style comment. This is not in keeping with the style used
for comments elsewhere in this fine. Update it accordingly.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: armada-3700: Set mode bits correctly
Dan Carpenter [Fri, 16 Dec 2016 09:33:25 +0000 (12:33 +0300)]
spi: armada-3700: Set mode bits correctly

We set SPI_RX_DUAL twice instead of setting SPI_TX_DUAL.

Fixes: 5762ab71eb24 ("spi: Add support for Armada 3700 SPI Controller")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Romain Perier <romain.perier@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: armada-3700: Remove unnecessary condition
Dan Carpenter [Fri, 16 Dec 2016 09:33:59 +0000 (12:33 +0300)]
spi: armada-3700: Remove unnecessary condition

We checked that "a3700_spi->wait_mask & cause" was set at the beginning
of the function so we don't need to check again here.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Romain Perier <romain.perier@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: armada-3700: fix unsigned compare than zero on irq
Colin Ian King [Tue, 13 Dec 2016 10:28:12 +0000 (10:28 +0000)]
spi: armada-3700: fix unsigned compare than zero on irq

spi->irq is an unsigned integer hence the check if status is less than
zero has no effect.  Fix this by replacing spi->irq with an int irq
so the less than zero compare will correctly detect errors.

Issue found with static analysis with CoverityScan, CID1388567

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Romain Perier <romain.perier@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: sh-msiof: Add R-Car Gen 2 and 3 fallback bindings
Simon Horman [Mon, 12 Dec 2016 09:49:35 +0000 (10:49 +0100)]
spi: sh-msiof: Add R-Car Gen 2 and 3 fallback bindings

In the case of Renesas R-Car hardware we know that there are generations of
SoCs, e.g. Gen 2 and Gen 3. But beyond that it's not clear what the
relationship between IP blocks might be. For example, I believe that
r8a7790 is older than r8a7791 but that doesn't imply that the latter is a
descendant of the former or vice versa.

We can, however, by examining the documentation and behaviour of the
hardware at run-time observe that the current driver implementation appears
to be compatible with the IP blocks on SoCs within a given generation.

For the above reasons and convenience when enabling new SoCs a
per-generation fallback compatibility string scheme is being adopted for
drivers for Renesas SoCs.

Also:
* Deprecate renesas,sh-msiof. It seems poorly named as it is only
  compatible with SH-Mobile. It also appears unused in mainline.

Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: spi-ath79: use gpio_set_value_cansleep for GPIO chip select
Felix Fietkau [Fri, 9 Dec 2016 19:48:53 +0000 (20:48 +0100)]
spi: spi-ath79: use gpio_set_value_cansleep for GPIO chip select

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: spi-ath79: support multiple internal chip select lines
Felix Fietkau [Fri, 9 Dec 2016 19:48:52 +0000 (20:48 +0100)]
spi: spi-ath79: support multiple internal chip select lines

Several devices with multiple flash chips use the internal chip select
lines. Don't assume that chip select 1 and above are GPIO lines.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: SPI_FSL_DSPI should depend on HAS_DMA
Geert Uytterhoeven [Wed, 14 Dec 2016 12:28:05 +0000 (13:28 +0100)]
spi: SPI_FSL_DSPI should depend on HAS_DMA

If NO_DMA=y:

    ERROR: "bad_dma_ops" [drivers/spi/spi-fsl-dspi.ko] undefined!

Add a dependency on HAS_DMA to fix this.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agoMerge remote-tracking branches 'spi/topic/spidev', 'spi/topic/sunxi', 'spi/topic...
Mark Brown [Mon, 12 Dec 2016 15:54:20 +0000 (15:54 +0000)]
Merge remote-tracking branches 'spi/topic/spidev', 'spi/topic/sunxi', 'spi/topic/ti-qspi', 'spi/topic/topcliff-pch' and 'spi/topic/xlp' into spi-next

7 years agoMerge remote-tracking branches 'spi/topic/orion', 'spi/topic/pxa2xx', 'spi/topic...
Mark Brown [Mon, 12 Dec 2016 15:54:17 +0000 (15:54 +0000)]
Merge remote-tracking branches 'spi/topic/orion', 'spi/topic/pxa2xx', 'spi/topic/rspi' and 'spi/topic/s3c64xx' into spi-next

7 years agoMerge remote-tracking branches 'spi/topic/fsl-lpspi', 'spi/topic/imx', 'spi/topic...
Mark Brown [Mon, 12 Dec 2016 15:54:14 +0000 (15:54 +0000)]
Merge remote-tracking branches 'spi/topic/fsl-lpspi', 'spi/topic/imx', 'spi/topic/jcore' and 'spi/topic/omap' into spi-next

7 years agoMerge remote-tracking branches 'spi/topic/delay', 'spi/topic/dw', 'spi/topic/fsl...
Mark Brown [Mon, 12 Dec 2016 15:54:09 +0000 (15:54 +0000)]
Merge remote-tracking branches 'spi/topic/delay', 'spi/topic/dw', 'spi/topic/fsl-dspi' and 'spi/topic/fsl-espi' into spi-next

7 years agoMerge remote-tracking branches 'spi/topic/armada', 'spi/topic/ath79', 'spi/topic...
Mark Brown [Mon, 12 Dec 2016 15:54:05 +0000 (15:54 +0000)]
Merge remote-tracking branches 'spi/topic/armada', 'spi/topic/ath79', 'spi/topic/atmel' and 'spi/topic/axi' into spi-next

7 years agoMerge remote-tracking branch 'spi/topic/rcar' into spi-next
Mark Brown [Mon, 12 Dec 2016 15:54:04 +0000 (15:54 +0000)]
Merge remote-tracking branch 'spi/topic/rcar' into spi-next

7 years agoMerge remote-tracking branch 'spi/topic/dma' into spi-next
Mark Brown [Mon, 12 Dec 2016 15:54:03 +0000 (15:54 +0000)]
Merge remote-tracking branch 'spi/topic/dma' into spi-next

7 years agoMerge remote-tracking branch 'spi/topic/core' into spi-next
Mark Brown [Mon, 12 Dec 2016 15:54:03 +0000 (15:54 +0000)]
Merge remote-tracking branch 'spi/topic/core' into spi-next

7 years agoMerge remote-tracking branches 'spi/fix/atmel', 'spi/fix/mvbeu' and 'spi/fix/spidev...
Mark Brown [Mon, 12 Dec 2016 15:53:58 +0000 (15:53 +0000)]
Merge remote-tracking branches 'spi/fix/atmel', 'spi/fix/mvbeu' and 'spi/fix/spidev' into spi-linus

7 years agoLinux 4.9 v4.9
Linus Torvalds [Sun, 11 Dec 2016 19:17:54 +0000 (11:17 -0800)]
Linux 4.9

7 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Sun, 11 Dec 2016 18:17:39 +0000 (10:17 -0800)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS fixes from Ralf Baechle:
 "Two more MIPS fixes for 4.9:

   - RTC: Return -ENODEV so an external RTC will be tried

   - Fix mask of GPE frequency

  These two have been tested on Imagination's automated test system and
  also both received positive reviews on the linux-mips mailing list"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: Lantiq: Fix mask of GPE frequency
  MIPS: Return -ENODEV from weak implementation of rtc_mips_set_time

7 years agoMIPS: Lantiq: Fix mask of GPE frequency
Hauke Mehrtens [Wed, 7 Dec 2016 21:32:00 +0000 (22:32 +0100)]
MIPS: Lantiq: Fix mask of GPE frequency

The hardware documentation says bit 11:10 are used for the GPE
frequency selection. Fix the mask in the define to match these bits.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Thomas Langer <thomas.langer@intel.com>
Cc: linux-mips@linux-mips.org
Cc: john@phrozen.org
Patchwork: https://patchwork.linux-mips.org/patch/14648/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
7 years agoMIPS: Return -ENODEV from weak implementation of rtc_mips_set_time
Luuk Paulussen [Wed, 7 Dec 2016 22:43:34 +0000 (11:43 +1300)]
MIPS: Return -ENODEV from weak implementation of rtc_mips_set_time

The sync_cmos_clock function in kernel/time/ntp.c first tries to update
the internal clock of the cpu by calling the "update_persistent_clock64"
architecture specific function.  If this returns -ENODEV, it then tries
to update an external RTC using "rtc_set_ntp_time".

On the mips architecture, the weak implementation of the underlying
function would return 0 if it wasn't overridden.  This meant that the
sync_cmos_clock function would never try to update an external RTC
(if both CONFIG_GENERIC_CMOS_UPDATE and CONFIG_RTC_SYSTOHC are
configured)

Returning -ENODEV instead, means that an external RTC will be tried.

Signed-off-by: Luuk Paulussen <luuk.paulussen@alliedtelesis.co.nz>
Reviewed-by: Richard Laing <richard.laing@alliedtelesis.co.nz>
Reviewed-by: Scott Parlane <scott.parlane@alliedtelesis.co.nz>
Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14649/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
7 years agoMerge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Sat, 10 Dec 2016 17:47:13 +0000 (09:47 -0800)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "This fixes the following issues:

   - Fix pointer size when caam is used with AArch64 boot loader on
     AArch32 kernel.

   - Fix ahash state corruption in marvell driver.

   - Fix buggy algif_aed tag handling.

   - Prevent mcryptd from being used with incompatible algorithms which
     can cause crashes"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: algif_aead - fix uninitialized variable warning
  crypto: mcryptd - Check mcryptd algorithm compatibility
  crypto: algif_aead - fix AEAD tag memory handling
  crypto: caam - fix pointer size for AArch64 boot loader, AArch32 kernel
  crypto: marvell - Don't corrupt state of an STD req for re-stepped ahash
  crypto: marvell - Don't copy hash operation twice into the SRAM

7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sat, 10 Dec 2016 17:23:19 +0000 (09:23 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Limit the number of can filters to avoid > MAX_ORDER allocations.
    Fix from Marc Kleine-Budde.

 2) Limit GSO max size in netvsc driver to avoid problems with NVGRE
    configurations. From Stephen Hemminger.

 3) Return proper error when memory allocation fails in
    ser_gigaset_init(), from Dan Carpenter.

 4) Missing linkage undo in error paths of ipvlan_link_new(), from Gao
    Feng.

 5) Missing necessayr SET_NETDEV_DEV in lantiq and cpmac drivers, from
    Florian Fainelli.

 6) Handle probe deferral properly in smsc911x driver.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  net: mlx5: Fix Kconfig help text
  net: smsc911x: back out silently on probe deferrals
  ibmveth: set correct gso_size and gso_type
  net: ethernet: cpmac: Call SET_NETDEV_DEV()
  net: ethernet: lantiq_etop: Call SET_NETDEV_DEV()
  vhost-vsock: fix orphan connection reset
  cxgb4/cxgb4vf: Assign netdev->dev_port with port ID
  driver: ipvlan: Unlink the upper dev when ipvlan_link_new failed
  ser_gigaset: return -ENOMEM on error instead of success
  NET: usb: cdc_mbim: add quirk for supporting Telit LE922A
  can: peak: fix bad memory access and free sequence
  phy: Don't increment MDIO bus refcount unless it's a different owner
  netvsc: reduce maximum GSO size
  drivers: net: cpsw-phy-sel: Clear RGMII_IDMODE on "rgmii" links
  can: raw: raw_setsockopt: limit number of can_filter that can be set

7 years agonet: mlx5: Fix Kconfig help text
Christopher Covington [Fri, 9 Dec 2016 21:53:05 +0000 (16:53 -0500)]
net: mlx5: Fix Kconfig help text

Since the following commit, Infiniband and Ethernet have not been
mutually exclusive.

Fixes: 4aa17b28 mlx5: Enable mutual support for IB and Ethernet
Signed-off-by: Christopher Covington <cov@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: smsc911x: back out silently on probe deferrals
Linus Walleij [Fri, 9 Dec 2016 13:18:00 +0000 (14:18 +0100)]
net: smsc911x: back out silently on probe deferrals

When trying to get a regulator we may get deferred and we see
this noise:

smsc911x 1b800000.ethernet-ebi2 (unnamed net_device) (uninitialized):
   couldn't get regulators -517

Then the driver continues anyway. Which means that the regulator
may not be properly retrieved and reference counted, and may be
switched off in case noone else is using it.

Fix this by returning silently on deferred probe and let the
system work it out.

Cc: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoibmveth: set correct gso_size and gso_type
Thomas Falcon [Thu, 8 Dec 2016 22:40:03 +0000 (16:40 -0600)]
ibmveth: set correct gso_size and gso_type

This patch is based on an earlier one submitted
by Jon Maxwell with the following commit message:

"We recently encountered a bug where a few customers using ibmveth on the
same LPAR hit an issue where a TCP session hung when large receive was
enabled. Closer analysis revealed that the session was stuck because the
one side was advertising a zero window repeatedly.

We narrowed this down to the fact the ibmveth driver did not set gso_size
which is translated by TCP into the MSS later up the stack. The MSS is
used to calculate the TCP window size and as that was abnormally large,
it was calculating a zero window, even although the sockets receive buffer
was completely empty."

We rely on the Virtual I/O Server partition in a pseries
environment to provide the MSS through the TCP header checksum
field. The stipulation is that users should not disable checksum
offloading if rx packet aggregation is enabled through VIOS.

Some firmware offerings provide the MSS in the RX buffer.
This is signalled by a bit in the RX queue descriptor.

Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Pradeep Satyanarayana <pradeeps@linux.vnet.ibm.com>
Reviewed-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Reviewed-by: Jonathan Maxwell <jmaxwell37@gmail.com>
Reviewed-by: David Dai <zdai@us.ibm.com>
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdim...
Linus Torvalds [Fri, 9 Dec 2016 19:27:22 +0000 (11:27 -0800)]
Merge branch 'libnvdimm-fixes' of git://git./linux/kernel/git/nvdimm/nvdimm

Pull libnvdimm fixes from Dan Williams:
 "Several fixes to the DSM (ACPI device specific method) marshaling
  implementation.

  I consider these urgent enough to send for 4.9 consideration since
  they fix the kernel's handling of ARS (Address Range Scrub) commands.
  Especially for platforms without machine-check-recovery capabilities,
  successful execution of ARS commands enables the platform to
  potentially break out of an infinite reboot problem if a media error
  is present in the boot path. There is also a one line fix for a
  device-dax read-only mapping regression.

  Commits 9a901f5495e2 ("acpi, nfit: fix extended status translations
  for ACPI DSMs") and 325896ffdf90 ("device-dax: fix private mapping
  restriction, permit read-only") are true regression fixes for changes
  introduced this cycle.

  Commit efda1b5d87cb ("acpi, nfit, libnvdimm: fix / harden ars_status
  output length handling") fixes the kernel's handling of zero-length
  results, this never would have worked in the past, but we only just
  recently discovered a BIOS implementation that emits this arguably
  spec non-compliant result.

  The remaining two commits are additional fall out from thinking
  through the implications of a zero / truncated length result of the
  ARS Status command.

  In order to mitigate the risk that these changes introduce yet more
  regressions they are backstopped by a new unit test in commit
  a7de92dac9f0 ("tools/testing/nvdimm: unit test acpi_nfit_ctl()") that
  mocks up inputs to acpi_nfit_ctl()"

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  device-dax: fix private mapping restriction, permit read-only
  tools/testing/nvdimm: unit test acpi_nfit_ctl()
  acpi, nfit: fix bus vs dimm confusion in xlat_status
  acpi, nfit: validate ars_status output buffer size
  acpi, nfit, libnvdimm: fix / harden ars_status output length handling
  acpi, nfit: fix extended status translations for ACPI DSMs

7 years agoMerge branch 'for-4.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Fri, 9 Dec 2016 19:07:45 +0000 (11:07 -0800)]
Merge branch 'for-4.9-fixes' of git://git./linux/kernel/git/tj/libata

Pull libata fixes from Tejun Heo:
 "This is quite late but SCT Write Same support added during this cycle
  is broken subtly but seriously and it'd be best to disable it before
  v4.9 gets released.

  This contains two commits - one low impact sata_mv fix and the
  mentioned disabling of SCT Write Same"

* 'for-4.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  libata-scsi: disable SCT Write Same for the moment
  ata: sata_mv: check for errors when parsing nr-ports from dt

7 years agoMerge tag 'ceph-for-4.9-rc9' of git://github.com/ceph/ceph-client
Linus Torvalds [Fri, 9 Dec 2016 19:02:40 +0000 (11:02 -0800)]
Merge tag 'ceph-for-4.9-rc9' of git://github.com/ceph/ceph-client

Pull ceph fix from Ilya Dryomov:
 "A fix for an issue with ->d_revalidate() in ceph, causing frequent
  kernel crashes.

  Marked for stable - it goes back to 4.6, but started popping up only
  in 4.8"

* tag 'ceph-for-4.9-rc9' of git://github.com/ceph/ceph-client:
  ceph: don't set req->r_locked_dir in ceph_d_revalidate

7 years agoMerge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Fri, 9 Dec 2016 19:00:39 +0000 (11:00 -0800)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Final batch of SoC fixes

  A few fixes that have trickled in over the last week, all fixing minor
  errors in devicetrees -- UART pin assignment on Allwinner H3,
  correcting number of SATA ports on a Marvell-based Linkstation
  platform and a display clock fix for Freescale/NXP i.MX7D that fixes a
  freeze when starting up X"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: dts: orion5x: fix number of sata port for linkstation ls-gl
  ARM: dts: imx7d: fix LCDIF clock assignment
  dts: sun8i-h3: correct UART3 pin definitions

7 years agoMerge tag 'm68k-for-v4.9-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert...
Linus Torvalds [Fri, 9 Dec 2016 18:54:54 +0000 (10:54 -0800)]
Merge tag 'm68k-for-v4.9-tag2' of git://git./linux/kernel/git/geert/linux-m68k

Pull m68k fixes from Geert Uytterhoeven:

 - build fix for drivers calling ndelay() in a conditional block without
   curly braces

 - defconfig updates

* tag 'm68k-for-v4.9-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k: Fix ndelay() macro
  m68k/defconfig: Update defconfigs for v4.9-rc1

7 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 9 Dec 2016 18:50:49 +0000 (10:50 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fix from Dave Airlie:
 "Just a single fix for amdgpu to just suspend the gpu on 'shutdown'
  instead of shutting it down fully, as for some reason the hw was
  getting upset in some situations"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/amdgpu: just suspend the hw on pci shutdown

7 years agoRevert "radix tree test suite: fix compilation"
Linus Torvalds [Fri, 9 Dec 2016 18:41:42 +0000 (10:41 -0800)]
Revert "radix tree test suite: fix compilation"

This reverts commit 53855d10f4567a0577360b6448d52a863929775b.

It shouldn't have come in yet - it depends on the changes in linux-next
that will come in during the next merge window.  As Matthew Wilcox says,
the test suite is broken with the current state without the revert.

Requested-by: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge branch 'ethernet-missing-netdev-parent'
David S. Miller [Fri, 9 Dec 2016 02:26:59 +0000 (21:26 -0500)]
Merge branch 'ethernet-missing-netdev-parent'

Florian Fainelli says:

====================
net: ethernet: Make sure we set dev->dev.parent

This patch series builds atop:

ec988ad78ed6d184a7f4ca6b8e962b0e8f1de461 ("phy: Don't increment MDIO
bus refcount unless it's a different owner")

FMAN is the one that potentially needs patching as well (call
SET_NETDEV_DEV), but there appears to be no way that init_phy is
called right now, or there is not such an in-tree user. Madalin, can
you comment on that?
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: ethernet: cpmac: Call SET_NETDEV_DEV()
Florian Fainelli [Thu, 8 Dec 2016 19:41:25 +0000 (11:41 -0800)]
net: ethernet: cpmac: Call SET_NETDEV_DEV()

The TI CPMAC driver calls into PHYLIB which now checks for
net_device->dev.parent, so make sure we do set it before calling into
any MDIO/PHYLIB related function.

Fixes: ec988ad78ed6 ("phy: Don't increment MDIO bus refcount unless it's a different owner")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: ethernet: lantiq_etop: Call SET_NETDEV_DEV()
Florian Fainelli [Thu, 8 Dec 2016 19:41:24 +0000 (11:41 -0800)]
net: ethernet: lantiq_etop: Call SET_NETDEV_DEV()

The Lantiq Etop driver calls into PHYLIB which now checks for
net_device->dev.parent, so make sure we do set it before calling into
any MDIO/PHYLIB related function.

Fixes: ec988ad78ed6 ("phy: Don't increment MDIO bus refcount unless it's a different owner")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agovhost-vsock: fix orphan connection reset
Peng Tao [Thu, 8 Dec 2016 17:10:46 +0000 (01:10 +0800)]
vhost-vsock: fix orphan connection reset

local_addr.svm_cid is host cid. We should check guest cid instead,
which is remote_addr.svm_cid. Otherwise we end up resetting all
connections to all guests.

Cc: stable@vger.kernel.org [4.8+]
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'parisc-4.9-5' of git://git.kernel.org/pub/scm/linux/kernel/git/deller...
Linus Torvalds [Thu, 8 Dec 2016 23:40:15 +0000 (15:40 -0800)]
Merge branch 'parisc-4.9-5' of git://git./linux/kernel/git/deller/parisc-linux

Pull parisc fixes from Helge Deller:
 "Three important fixes for the parisc architecture.

  Dave provided two patches: One which purges the TLB before setting a
  PTE entry and a second one which drops unnecessary TLB flushes. Both
  patches have been tested for one week on the debian buildd servers and
  prevent random segmentation faults.

  The patch from me fixes a crash at boot inside the TLB measuring code
  on SMP machines with PA8000-PA8700 CPUs (specifically A500-44 and
  J5000 servers)"

* 'parisc-4.9-5' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Fix TLB related boot crash on SMP machines
  parisc: Remove unnecessary TLB purges from flush_dcache_page_asm and flush_icache_page_asm
  parisc: Purge TLB before setting PTE

7 years agoMerge tag 'linux-can-fixes-for-4.9-20161208' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Thu, 8 Dec 2016 23:22:40 +0000 (18:22 -0500)]
Merge tag 'linux-can-fixes-for-4.9-20161208' of git://git./linux/kernel/git/mkl/linux-can

Marc Kleine-Budde says:

====================
pull-request: can 2016-12-08

this is a pull request for one patch.

Jiho Chu found and fixed a use-after-free error in the cleanup path in
the peak pcan USB CAN driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agocxgb4/cxgb4vf: Assign netdev->dev_port with port ID
Arjun V [Thu, 8 Dec 2016 12:39:23 +0000 (18:09 +0530)]
cxgb4/cxgb4vf: Assign netdev->dev_port with port ID

Added missing dev_port assignment in cxgb4vf driver.
Also made dev_port assignment of cxgb4 in sync with cxgb4vf driver.

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: Arjun V <arjun@chelsio.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoparisc: Fix TLB related boot crash on SMP machines
Helge Deller [Thu, 8 Dec 2016 20:00:46 +0000 (21:00 +0100)]
parisc: Fix TLB related boot crash on SMP machines

At bootup we run measurements to calculate the best threshold for when we
should be using full TLB flushes instead of just flushing a specific amount of
TLB entries.  This performance test is run over the kernel text segment.

But running this TLB performance test on the kernel text segment turned out to
crash some SMP machines when the kernel text pages were mapped as huge pages.

To avoid those crashes this patch simply skips this test on some SMP machines
and calculates an optimal threshold based on the maximum number of available
TLB entries and number of online CPUs.

On a technical side, this seems to happen:
The TLB measurement code uses flush_tlb_kernel_range() to flush specific TLB
entries with a page size of 4k (pdtlb 0(sr1,addr)). On UP systems this purge
instruction seems to work without problems even if the pages were mapped as
huge pages.  But on SMP systems the TLB purge instruction is broadcasted to
other CPUs. Those CPUs then crash the machine because the page size is not as
expected.  C8000 machines with PA8800/PA8900 CPUs were not affected by this
problem, because the required cache coherency prohibits to use huge pages at
all.  Sadly I didn't found any documentation about this behaviour, so this
finding is purely based on testing with phyiscal SMP machines (A500-44 and
J5000, both were 2-way boxes).

Cc: <stable@vger.kernel.org> # v3.18+
Signed-off-by: Helge Deller <deller@gmx.de>
7 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Thu, 8 Dec 2016 20:04:41 +0000 (12:04 -0800)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fix from James Bottomley:
 "One small fix for a regression in a prior fix (again).

  This time the condition in the prior fix BUG_ON proved to be wrong
  under certain circumstances causing a BUG to trigger where it
  shouldn't in the lpfc driver"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: lpfc: fix oops/BUG in lpfc_sli_ringtxcmpl_put()

7 years agodriver: ipvlan: Unlink the upper dev when ipvlan_link_new failed
Gao Feng [Thu, 8 Dec 2016 03:16:58 +0000 (11:16 +0800)]
driver: ipvlan: Unlink the upper dev when ipvlan_link_new failed

When netdev_upper_dev_unlink failed in ipvlan_link_new, need to
unlink the ipvlan dev with upper dev.

Signed-off-by: Gao Feng <fgao@ikuai8.com>
Acked-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoser_gigaset: return -ENOMEM on error instead of success
Dan Carpenter [Wed, 7 Dec 2016 11:22:03 +0000 (14:22 +0300)]
ser_gigaset: return -ENOMEM on error instead of success

If we can't allocate the resources in gigaset_initdriver() then we
should return -ENOMEM instead of zero.

Fixes: 2869b23e4b95 ("[PATCH] drivers/isdn/gigaset: new M101 driver (v2)")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoARM: dts: orion5x: fix number of sata port for linkstation ls-gl
Roger Shimizu [Thu, 1 Dec 2016 15:11:12 +0000 (00:11 +0900)]
ARM: dts: orion5x: fix number of sata port for linkstation ls-gl

Bug report from Debian [0] shows there's minor changed model of
Linkstation LS-GL that uses the 2nd SATA port of the SoC.
So it's necessary to enable two SATA ports, though for that specific
model only the 2nd one is used.

[0] https://bugs.debian.org/845611

Fixes: b1742ffa9ddb ("ARM: dts: orion5x: add device tree for buffalo linkstation ls-gl")
Reported-by: Ryan Tandy <ryan@nardis.ca>
Tested-by: Ryan Tandy <ryan@nardis.ca>
Signed-off-by: Roger Shimizu <rogershimizu@gmail.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
7 years agoNET: usb: cdc_mbim: add quirk for supporting Telit LE922A
Daniele Palmas [Wed, 7 Dec 2016 13:07:48 +0000 (14:07 +0100)]
NET: usb: cdc_mbim: add quirk for supporting Telit LE922A

Telit LE922A MBIM based composition does not work properly
with altsetting toggle done in cdc_ncm_bind_common.

This patch adds CDC_MBIM_FLAG_AVOID_ALTSETTING_TOGGLE quirk
to avoid this procedure that, instead, is mandatory for
other modems.

Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Reviewed-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agospi: mvebu: fix baudrate calculation for armada variant
Uwe Kleine-König [Thu, 8 Dec 2016 16:37:08 +0000 (17:37 +0100)]
spi: mvebu: fix baudrate calculation for armada variant

The calculation of SPR and SPPR doesn't round correctly at several
places which might result in baud rates that are too big. For example
with tclk_hz = 250000001 and target rate 25000000 it determined a
divider of 10 which is wrong.

Instead of fixing all the corner cases replace the calculation by an
algorithm without a loop which should even be quicker to execute apart
from being correct.

Fixes: df59fa7f4bca ("spi: orion: support armada extended baud rates")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: Add support for Armada 3700 SPI Controller
Romain Perier [Thu, 8 Dec 2016 14:58:44 +0000 (15:58 +0100)]
spi: Add support for Armada 3700 SPI Controller

Marvell Armada 3700 SoC comprises an SPI Controller. This Controller
supports up to 4 SPI slave devices, with dedicated chip selects,supports
SPI mode 0/1/2 and 3, CPIO or Fifo mode with DMA transfers and different
SPI transfer mode (Single, Dual or Quad).

This commit adds basic driver support for FIFO mode. In this mode,
dedicated registers are used to store the instruction, the address, the
read mode and the data. Write and Read FIFO are used to store the
outcoming or incoming data. The data FIFOs are accessible via DMA or by
the CPU. Only the CPU is supported for now.

Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agospi: armada-3700: Add documentation for the Armada 3700 SPI Controller
Romain Perier [Thu, 8 Dec 2016 14:58:45 +0000 (15:58 +0100)]
spi: armada-3700: Add documentation for the Armada 3700 SPI Controller

This adds the devicetree bindings documentation for the SPI controller
present in the Marvell Armada 3700 SoCs.

Signed-off-by: Romain Perier <romain.perier@free-electrons.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
7 years agocan: peak: fix bad memory access and free sequence
추지호 [Thu, 8 Dec 2016 12:01:13 +0000 (12:01 +0000)]
can: peak: fix bad memory access and free sequence

Fix for bad memory access while disconnecting. netdev is freed before
private data free, and dev is accessed after freeing netdev.

This makes a slub problem, and it raise kernel oops with slub debugger
config.

Signed-off-by: Jiho Chu <jiho.chu@samsung.com>
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
7 years agoceph: don't set req->r_locked_dir in ceph_d_revalidate
Jeff Layton [Wed, 30 Nov 2016 20:56:46 +0000 (15:56 -0500)]
ceph: don't set req->r_locked_dir in ceph_d_revalidate

This function sets req->r_locked_dir which is supposed to indicate to
ceph_fill_trace that the parent's i_rwsem is locked for write.
Unfortunately, there is no guarantee that the dir will be locked when
d_revalidate is called, so we really don't want ceph_fill_trace to do
any dcache manipulation from this context. Clear req->r_locked_dir since
it's clearly not safe to do that.

What we really want to know with d_revalidate is whether the dentry
still points to the same inode. ceph_fill_trace installs a pointer to
the inode in req->r_target_inode, so we can just compare that to
d_inode(dentry) to see if it's the same one after the lookup.

Also, since we aren't generally interested in the parent here, we can
switch to using a GETATTR to hint that to the MDS, which also means that
we only need to reserve one cap.

Finally, just remove the d_unhashed check. That's really outside the
purview of a filesystem's d_revalidate. If the thing became unhashed
while we're checking it, then that's up to the VFS to handle anyway.

Fixes: 200fd27c8fa2 ("ceph: use lookup request to revalidate dentry")
Link: http://tracker.ceph.com/issues/18041
Reported-by: Donatas Abraitis <donatas.abraitis@gmail.com>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
7 years agocrypto: algif_aead - fix uninitialized variable warning
Stephan Mueller [Thu, 8 Dec 2016 06:09:44 +0000 (07:09 +0100)]
crypto: algif_aead - fix uninitialized variable warning

In case the user provided insufficient data, the code may return
prematurely without any operation. In this case, the processed
data indicated with outlen is zero.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
7 years agoMerge branch 'akpm' (patches from Andrew)
Linus Torvalds [Thu, 8 Dec 2016 01:28:38 +0000 (17:28 -0800)]
Merge branch 'akpm' (patches from Andrew)

Merge more fixes from Andrew Morton:
 "3 fixes"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  kcov: add missing #include <linux/sched.h>
  radix tree test suite: fix compilation
  zram: restrict add/remove attributes to root only

7 years agokcov: add missing #include <linux/sched.h>
Kefeng Wang [Wed, 7 Dec 2016 22:44:36 +0000 (14:44 -0800)]
kcov: add missing #include <linux/sched.h>

In __sanitizer_cov_trace_pc we use task_struct and fields within it, but
as we haven't included <linux/sched.h>, it is not guaranteed to be
defined.  While we usually happen to acquire the definition through a
transitive include, this is fragile (and hasn't been true in the past,
causing issues with backports).

Include <linux/sched.h> to avoid any fragility.

[mark.rutland@arm.com: rewrote changelog]
Link: http://lkml.kernel.org/r/1481007384-27529-1-git-send-email-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: James Morse <james.morse@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoradix tree test suite: fix compilation
Matthew Wilcox [Wed, 7 Dec 2016 22:44:33 +0000 (14:44 -0800)]
radix tree test suite: fix compilation

Patch "lib/radix-tree: Convert to hotplug state machine" breaks the test
suite as it adds a call to cpuhp_setup_state_nocalls() which is not
currently emulated in the test suite.  Add it, and delete the emulation
of the old CPU hotplug mechanism.

Link: http://lkml.kernel.org/r/1480369871-5271-36-git-send-email-mawilcox@linuxonhyperv.com
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agozram: restrict add/remove attributes to root only
Sergey Senozhatsky [Wed, 7 Dec 2016 22:44:31 +0000 (14:44 -0800)]
zram: restrict add/remove attributes to root only

zram hot_add sysfs attribute is a very 'special' attribute - reading
from it creates a new uninitialized zram device.  This file, by a
mistake, can be read by a 'normal' user at the moment, while only root
must be able to create a new zram device, therefore hot_add attribute
must have S_IRUSR mode, not S_IRUGO.

[akpm@linux-foundation.org: s/sence/sense/, reflow comment to use 80 cols]
Fixes: 6566d1a32bf72 ("zram: add dynamic device add/remove functionality")
Link: http://lkml.kernel.org/r/20161205155845.20129-1-sergey.senozhatsky@gmail.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Reported-by: Steven Allen <steven@stebalien.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Minchan Kim <minchan@kernel.org>
Cc: <stable@vger.kernel.org> [4.2+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge branch 'drm-fixes-4.9' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Thu, 8 Dec 2016 00:32:27 +0000 (10:32 +1000)]
Merge branch 'drm-fixes-4.9' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

another regression fix for the shutdown stuff.

* 'drm-fixes-4.9' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu: just suspend the hw on pci shutdown

7 years agolibata-scsi: disable SCT Write Same for the moment
Nicolai Stange [Wed, 7 Dec 2016 21:21:33 +0000 (22:21 +0100)]
libata-scsi: disable SCT Write Same for the moment

SCT Write Same support had been introduced with
commit 7b2030942859 ("libata: Add support for SCT Write Same")

Some problems, namely excessive userspace segfaults, had been reported at

  http://lkml.kernel.org/r/20160908192736.GA4356@gmail.com

This lead to commit 0ce1b18c42a5 ("libata: Some drives failing on
SCT Write Same") which strived to disable SCT Write Same on !ZAC devices.
Due to the way this was done and to the logic in sd_config_write_same(),
this didn't work for those devices that have
->max_ws_blocks > SD_MAX_WS10_BLOCKS: for these, ->no_write_same and
->max_write_same_sectors would still be non-zero,
but ->ws10 == ->ws16 == 0. This would cause sd_setup_write_same_cmnd() to
demultiplex REQ_OP_WRITE_SAME requests to WRITE_SAME, and these in turn
aren't supported by libata-scsi:

  EXT4-fs (dm-1): Delayed block allocation failed for inode 2625094 at
                  logical offset 2032 with max blocks 2 with error 121
  EXT4-fs (dm-1): This should not happen!! Data will be lost

121 == EREMOTEIO is what scsi_io_completion() asserts in case of
invalid opcodes.

Back to the original problem of userspace segfaults: this can be tracked
down to ata_format_sct_write_same() overwriting the input page. Sometimes,
this page is ZERO_PAGE(0) which ceases to be filled with zeros from that
point on. Since ZERO_PAGE(0) is used for userspace .bss mappings, code of
the following is doomed:

  static char *a = NULL; /* .bss */
  ...
  if (a)
    *a = 'a';

This problem is not solved by disabling SCT Write Same for !ZAC devices
only.

It can certainly be fixed, but the final release is quite close -- so
disable SCT Write Same for all ATA devices rather than introducing some
SCT key buffer allocation schemes at this point.

Fixes: 7b2030942859 ("libata: Add support for SCT Write Same")
Signed-off-by: Nicolai Stange <nicstange@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
7 years agoARM: dts: imx7d: fix LCDIF clock assignment
Stefan Agner [Wed, 23 Nov 2016 00:42:04 +0000 (16:42 -0800)]
ARM: dts: imx7d: fix LCDIF clock assignment

The eLCDIF IP of the i.MX 7 SoC knows multiple clocks and lists them
separately:

Clock      Clock Root              Description
apb_clk    MAIN_AXI_CLK_ROOT       AXI clock
pix_clk    LCDIF_PIXEL_CLK_ROOT    Pixel clock
ipg_clk_s  MAIN_AXI_CLK_ROOT       Peripheral access clock

All of them are switched by a single gate, which is part of the
IMX7D_LCDIF_PIXEL_ROOT_CLK clock. Hence using that clock also for
the AXI bus clock (clock-name "axi") makes sure the gate gets
enabled when accessing registers.

There seem to be no separate AXI display clock, and the clock is
optional. Hence remove the dummy clock.

This fixes kernel freezes when starting the X-Server (which
disables/re-enables the display controller).

Fixes: e8ed73f691bd ("ARM: dts: imx7d: add lcdif support")
Signed-off-by: Stefan Agner <stefan@agner.ch>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Olof Johansson <olof@lixom.net>
7 years agodts: sun8i-h3: correct UART3 pin definitions
Jorik Jonker [Tue, 6 Dec 2016 14:27:10 +0000 (15:27 +0100)]
dts: sun8i-h3: correct UART3 pin definitions

In a previous commit, I made a copy/paste error in the pinmux
definitions of UART3: PG{13,14} instead of PA{13,14}. This commit takes
care of that. I have tested this commit on Orange Pi PC and Orange Pi
Plus, and it works for these boards.

Fixes: e3d11d3c45c5 ("dts: sun8i-h3: add pinmux definitions for
UART2-3")

Signed-off-by: Jorik Jonker <jorik@kippendief.biz>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
7 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 7 Dec 2016 19:39:27 +0000 (11:39 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "Misc fixes: a core dumping crash fix, a guess-unwinder regression fix,
  plus three build warning fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/unwind: Fix guess-unwinder regression
  x86/build: Annotate die() with noreturn to fix build warning on clang
  x86/platform/olpc: Fix resume handler build warning
  x86/apic/uv: Silence a shift wrapping warning
  x86/coredump: Always use user_regs_struct for compat_elf_gregset_t

7 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 7 Dec 2016 19:35:55 +0000 (11:35 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fix from Ingo Molnar:
 "An autogroup nice level adjustment bug fix"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/autogroup: Fix 64-bit kernel nice level adjustment

7 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 7 Dec 2016 19:32:19 +0000 (11:32 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "A bogus warning fix, a counter width handling fix affecting certain
  machines, plus a oneliner hw-enablement patch for Knights Mill CPUs"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/core: Remove invalid warning from list_update_cgroup_even()t
  perf/x86: Fix full width counter, counter overflow
  perf/x86/intel: Enable C-state residency events for Knights Mill

7 years agoMerge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 7 Dec 2016 19:27:33 +0000 (11:27 -0800)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull locking fixes from Ingo Molnar:
 "Two rtmutex race fixes (which miraculously never triggered, that we
  know of), plus two lockdep printk formatting regression fixes"

* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  lockdep: Fix report formatting
  locking/rtmutex: Use READ_ONCE() in rt_mutex_owner()
  locking/rtmutex: Prevent dequeue vs. unlock race
  locking/selftest: Fix output since KERN_CONT changes

7 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 7 Dec 2016 18:56:00 +0000 (10:56 -0800)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull objtool fix from Ingo Molnar:
 "A single late breaking fix for objtool"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Fix bytes check of lea's rex_prefix

7 years agophy: Don't increment MDIO bus refcount unless it's a different owner
Florian Fainelli [Wed, 7 Dec 2016 04:54:43 +0000 (20:54 -0800)]
phy: Don't increment MDIO bus refcount unless it's a different owner

Commit 3e3aaf649416 ("phy: fix mdiobus module safety") fixed the way we
dealt with MDIO bus module reference count, but sort of introduced a
regression in that, if an Ethernet driver registers its own MDIO bus
driver, as is common, we will end up with the Ethernet driver's
module->refnct set to 1, thus preventing this driver from any removal.

Fix this by comparing the network device's device driver owner against
the MDIO bus driver owner, and only if they are different, increment the
MDIO bus module refcount.

Fixes: 3e3aaf649416 ("phy: fix mdiobus module safety")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonetvsc: reduce maximum GSO size
stephen hemminger [Tue, 6 Dec 2016 21:43:54 +0000 (13:43 -0800)]
netvsc: reduce maximum GSO size

Hyper-V (and Azure) support using NVGRE which requires some extra space
for encapsulation headers. Because of this the largest allowed TSO
packet is reduced.

For older releases, hard code a fixed reduced value.  For next release,
there is a better solution which uses result of host offload
negotiation.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>