The advantage of kcalloc is, that will prevent integer overflows
which could result from the multiplication of number of elements
and size and it is also a bit nicer to read.
Signed-off-by: NHimangi Saraogi <himangi774@gmail.com>
Acked-by: NJulia Lawall <julia.lawall@lip6.fr>
Acked-by: NAndreas Noever <andreas.noever@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch implements DMA Engine API for DMA controller on MIC X100
Coprocessors. DMA h/w is shared between host and card s/w.
Channels 0 to 3 are used by host and 4 to 7 are used by card.
Since the DMA device doesn't show up as PCIe device, a virtual bus called mic
bus is created and virtual devices are added on that bus to follow device model.
Allowed dma transfer directions are host to card, card to host and card to card.
Reviewed-by: NAshutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: NNikhil Rao <nikhil.rao@intel.com>
Reviewed-by: NSudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: NSiva Yerramreddy <yshivakrishna@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

modprobe dma driver upon start and remove it upon unload.
Signed-off-by: NSiva Yerramreddy <yshivakrishna@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch adds a dma device on the mic virtual bus
Reviewed-by: NNikhil Rao <nikhil.rao@intel.com>
Signed-off-by: NSudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: NSiva Yerramreddy <yshivakrishna@gmail.com>
Signed-off-by: NAshutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Add threaded irq support in mic_request_card_irq which will be used
for virtual devices added on mic bus.
Reviewed-by: NAshutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: NNikhil Rao <nikhil.rao@intel.com>
Reviewed-by: NSudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: NSiva Yerramreddy <yshivakrishna@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This patch adds a dma device on the mic virtual bus and uses this dmaengine
to transfer data for virtio devices
Reviewed-by: NNikhil Rao <nikhil.rao@intel.com>
Signed-off-by: NSudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: NAshutosh Dixit <ashutosh.dixit@intel.com>
Signed-off-by: NSiva Yerramreddy <yshivakrishna@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Convert mic_request_irq to mic_request_threaded_irq to support threaded
irq for virtual devices on mic bus.
Reviewed-by: NAshutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: NNikhil Rao <nikhil.rao@intel.com>
Reviewed-by: NSudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: NSiva Yerramreddy <yshivakrishna@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This MIC virtual bus driver takes the responsibility of creating all
the virtual devices connected to the PCIe device on the host and the
platform device on the card. The MIC bus hardware operations provide
a way to abstract certain hardware details from the base physical devices.
Examples of devices added on the MIC virtual bus include host DMA and card DMA.
This abstraction enables using a common DMA driver on host and card.
Reviewed-by: NAshutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: NNikhil Rao <nikhil.rao@intel.com>
Signed-off-by: NSudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: NSiva Yerramreddy <yshivakrishna@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Added an overview of mic bus and dma driver.
Reviewed-by: NAshutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: NNikhil Rao <nikhil.rao@intel.com>
Reviewed-by: NSudeep Dutt <sudeep.dutt@intel.com>
Signed-off-by: NSiva Yerramreddy <yshivakrishna@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

On some systems, hot-plug tests could hang forever waiting for cpu and
memory to be ready to be offlined. A special hot-plug target is created
to run full range of hot-plug tests. In default mode, hot-plug tests run
in safe mode with a limited scope. In limited mode, cpu-hotplug test is
run on a single cpu as opposed to all hotplug capable cpus, and memory
hotplug test is run on 2% of hotplug capable memory instead of 10%. In
addition to the above change, cpu-hotplug is chnged to change processor
affinity to cpu 0 so it doesn't impact itself while the test runs.
Signed-off-by: NShuah Khan <shuah.kh@samsung.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

kcmp_test.c: In function ‘main’:
kcmp_test.c:85:5: warning: format ‘%li’ expects argument of type ‘long int’, but argument 2 has type ‘int’ [-Wformat=]
     ret, strerror(errno));
     ^
Signed-off-by: NShuah Khan <shuah.kh@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Makefile compile linking order is incorrect causing the compile
to fail not finding librt symbols.

/tmp/cceTqwFh.o: In function `test_queue_fail':
mq_open_tests.c:(.text+0x6b): undefined reference to `mq_open'
mq_open_tests.c:(.text+0x80): undefined reference to `mq_getattr'
mq_open_tests.c:(.text+0xa2): undefined reference to `mq_close'
mq_open_tests.c:(.text+0xcf): undefined reference to `mq_unlink'
/tmp/cceTqwFh.o: In function `test_queue.constprop.6':
mq_open_tests.c:(.text+0x15a): undefined reference to `mq_open'
mq_open_tests.c:(.text+0x16f): undefined reference to `mq_getattr'
mq_open_tests.c:(.text+0x195): undefined reference to `mq_close'
mq_open_tests.c:(.text+0x1c2): undefined reference to `mq_unlink'
/tmp/cceTqwFh.o: In function `shutdown.part.0':
mq_open_tests.c:(.text.unlikely+0x5b): undefined reference to `mq_close'
mq_open_tests.c:(.text.unlikely+0x7a): undefined reference to `mq_unlink'
collect2: error: ld returned 1 exit status
make: *** [all] Error 1
Signed-off-by: NShuah Khan <shuah.kh@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix several compile warnings - these are repeats like the ones
below:

gcc -O2 -lrt mq_open_tests.c -o mq_open_tests
mq_open_tests.c: In function ‘main’:
mq_open_tests.c:295:2: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘rlim_t’ [-Wformat=]
  printf("\tRLIMIT_MSGQUEUE(soft):\t\t%d\n", saved_limits.rlim_cur);
  ^
mq_open_tests.c: In function ‘shutdown’:
mq_open_tests.c:83:9: warning: ignoring return value of ‘seteuid’, declared with attribute warn_unused_result [-Wunused-result]
  seteuid(0);
Signed-off-by: NShuah Khan <shuah.kh@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Fix numerous compile warnings in mq_perf_tests.c. All of these
are wrong format in printfs when printing nvsec.
Signed-off-by: NShuah Khan <shuah.kh@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

on-off-test is a bash script and invoked from /bin/sh
This results in the following error:

./on-off-test.sh: 9: [: !=: unexpected operator

Changed Makefile to use bash instead.
Signed-off-by: NShuah Khan <shuah.kh@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

on-off-test is a bash script and invoked from /bin/sh
This results in the following error:

./on-off-test.sh: 9: [: !=: unexpected operator

Changed Makefile to use bash instead.
Signed-off-by: NShuah Khan <shuah.kh@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NAndreas Noever <andreas.noever@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

module.h was included twice.
Signed-off-by: NSachin Kamat <sachin.kamat@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The include for the UAPI header file from card_base.c can be removed
since it's already included on card_base.h.
Signed-off-by: NKleber Sacilotto de Souza <klebers@linux.vnet.ibm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Signed-off-by: NRobin van der Gracht <robin@protonic.nl>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Get rid of the repeating &dev->dev constructs and prevent introducing
new ones.
Signed-off-by: NAndre Heider <a.heider@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The request for an IRQ handler must be done after whole configuration. This
was not the case for this driver which request the IRQ in the middle of
the configuration. Sometimes, it happens that something is not completely
configured, we recieve an interrupt thus we stumble into troubles in the
IRQ handler.
Signed-off-by: NFederico Vaga <federico.vaga@cern.ch>
Acked-by: NSamuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

In some conditions (echo or particular sequence of special
characters), on buffer push, the tty layer calls the write operation
while we are holding the spinlock. This means deadlock within the same
process on kernels version < 3.12. It seems not a problem on recent
kernel, but the patch still valid as locking optimization.

The protected variables by the spinlock are: xmit_buf, nb_bytes,
pointer_read and pointer_write. So, this patch reduces the locked area
in the IRQ handler only to these variables. Most of the code inside the
locked area in the IRQ handler is not protected elsewhere; it means
that it is not protected at all.
Signed-off-by: NFederico Vaga <federico.vaga@cern.ch>
Acked-by: NSamuel Iglesias Gonsalvez <siglesias@igalia.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This function should be returning an ERR_PTR() on failure instead of
NULL.  Also there is a use after free bug if regmap_init() fails because
we free "func" and then dereference doing the return.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NPawel Moll <pawel.moll@arm.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Return -ENOMEM instead of success if ioremap() fails.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This makes sure a format string cannot accidentally leak into a device name.
Signed-off-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Both systems need non-standard parameters for fan multiplier
and maximum fan speed.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Cc: Andreas Mohr <andi@lisas.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Some Dell laptops support fan speeds of {0, 1, 2, 3} instead of {0, 1, 2}.
Add a define for it.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Cc: Andreas Mohr <andi@lisas.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Newer Dell systems provide more granular fan speed selection.
Add support for it.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Cc: Andreas Mohr <andi@lisas.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Labels are known to be wrong for several Dell laptops.
For example, a single fan may be shown as right fan when in reality
it sits on the left side of the chassis. Drop all labels to avoid
such inaccuracies. Users can select labels in the sensors configuration
file instead if desired.
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Cc: Andreas Mohr <andi@lisas.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The CA91CX42_DCTL_VDW_M define is cut and pasted twice so we can delete
the second instance.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

commit dabd1468 "PCMCIA: sa1111: remove duplicated initializers"
incorrectly moved some code into the pcmcia_jornada720_init, causing
a few build errors, and for unknown reasons, the driver lacks
an inclusion of <linux/io.h>, so we get the build errors, and more:

sa1111_jornada720.c: In function 'pcmcia_jornada720_init':
sa1111_jornada720.c:101:3: error: implicit declaration of function 'IOMEM' [-Werror=implicit-function-declaration]
   GRER |= 0x00000002;
   ^
sa1111_jornada720.c:104:3: warning: passing argument 1 of 'sa1111_set_io_dir' from incompatible pointer type [enabled by default]
   sa1111_set_io_dir(dev, pin, 0, 0);
   ^

This patch uses the SA1111_DEV() to convert the dev pointer to the
correct type before passing it and adds the missing include.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Cc: linux-pcmcia@lists.infradead.org
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

The lubbock platform uses the sa1111 companion chip with a pxa250
CPU, which means it requires both the PCMCIA_SA1111 and the
PCMCIA_PXA2XX code to be built into the kernel. Unfortunately,
the Makefile and Kconfig don't agree on how this is accomplished,
leading to a situation where you get this link error when building
a lubbock kernel with PCMCIA_SA1111 enabled but PCMCIA_PXA2XX
disabled:

ERROR: "pxa2xx_configure_sockets" [drivers/pcmcia/sa1111_cs.ko] undefined!
ERROR: "pxa2xx_drv_pcmcia_ops" [drivers/pcmcia/sa1111_cs.ko] undefined!
ERROR: "pxa2xx_drv_pcmcia_add_one" [drivers/pcmcia/sa1111_cs.ko] undefined!

This patch changes the Kconfig code to disallow that particular
configuration.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

When building a iPAQ H3100-only kernel with PCMCIA enabled,
we get this build error:

ERROR: "pcmcia_h3600_init" [drivers/pcmcia/sa1100_cs.ko] undefined!

The defconfig normally works fine because it enables both H3100
and H3600 support. This patch fixes the Makefile to build the
driver if at least one of the two machines are selected.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

All its callers depends on the return value of -ENOBUFS to reallocate a
bigger buffer and retry the receiving. So there's no need to call
pr_err() here since it was not a real issue, otherwise syslog will be
flooded by this false warning.

Cc: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: NJason Wang <jasowang@redhat.com>
Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

hv_fcopy_daemon fails to overwrite a file if the target file already
exits.

Add O_TRUNC flag on opening.
Signed-off-by: NYue Zhang <yuezha@microsoft.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

This starts to address
https://bugzilla.kernel.org/show_bug.cgi?id=10770Signed-off-by: NTerry Chia <terrycwk1994@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

replace IS_ERR/PTR_ERR

Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Add WPT second mei interface.
Signed-off-by: NAlexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

Add sysfs attributes Documentation entries
for /sys/class/mei
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NAlexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>