Disable the admin queue if device fails during initialization so the
queue's irq is freed.
Signed-off-by: NKeith Busch <keith.busch@intel.com>
[rewritten to use nvme_free_queues]
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Some users need more than 64 partitions per device.  Rather than simply
increasing the number of partitions, switch to the dynamic partition
allocation scheme.

This means that minor numbers are not stable across boots, but since major
numbers aren't either, I cannot see this being a significant problem.
Tested-by: NMatias Bjørling <m@bjorling.me>
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

This attempts to delete all IO queues at the same time asynchronously on
shutdown. This is necessary for a present device that is not responding;
a shutdown operation previously would take 2 minutes per queue-pair
to timeout before moving on to the next queue, making a device removal
appear to take a very long time or "hung" as reported by users.

In the previous worst case, a removal may be stuck forever until a kill
signal is given if there are more than 32 queue pairs since it would run
out of admin command IDs after over an hour of timed out sync commands
(admin queue depth is 64).

This patch will wait for the admin command timeout for all commands to
complete, so the worst case now for an unresponsive controller is 60
seconds, though that still seems like a long time.

Since this adds another way to take queues offline, some duplicate code
resulted so I moved these into more convienient functions.
Signed-off-by: NKeith Busch <keith.busch@intel.com>
[make functions static, correct line length and whitespace issues]
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

This adds checks to see if the nvme pci device was removed. The check
reads the status register for the value of -1, which it should never be
unless the device is no longer present.

If a user performs a surprise removal on an nvme device, the driver will
be notified either by the pci driver remove callback if the platform's
slot is capable of this event, or via reading the device BAR status
register, which will indicate controller failure and trigger a reset.

Either way, the device is not present so all outstanding commands would
timeout. This will not send queue deletion commands to a drive that
isn't present and fail after ioremap, significantly speeding up surprise
removal; previously this took over 2 minutes per IO queue pair created,
but this will complete removing the device within a few seconds.
Signed-off-by: NKeith Busch <keith.busch@intel.com>
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Send nvme abort command to io requests that have timed out on an
initialized device. If the command is not returned after another timeout,
schedule the controller for reset.
Signed-off-by: NKeith Busch <keith.busch@intel.com>
[fix endianness issues]
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Schedules a controller reset when it indicates it has a failed status. If
the device does not become ready after a reset, the pci device will be
scheduled for removal.
Signed-off-by: NKeith Busch <keith.busch@intel.com>
[fixed checkpatch issue]
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Adds controller error handling on resume power management. If the device
fails to initialize, the device is queued for a reset. If the reset fails,
a thread is spawned to remove the pci device.

If the device resumes as "busy", the device is responding to admin
commands but will not create IO queues. In this case, we need to remove
the gendisks and free the IO queues since they can't be used and may be
holding bios in their lists.

From testing, the dma pools require a pci device so this had to change
the pci driver 'remove' to release the dma resources in line with that
call instead of after all references to the device are released.
Signed-off-by: NKeith Busch <keith.busch@intel.com>
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Helps with line-length issues
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

During the initialisation path, the queue lock is taken without interrupt
protection.  It's perfectly safe to do so, because the interrupt handler
can't run at this point, but it confuses lockdep.
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

For 32-bit versions of sg3-utils running on a 64-bit system. This is
mostly a copy from the relevent portions of fs/compat_ioctl.c, with
slight modifications for going through block_device_operations.
Signed-off-by: NKeith Busch <keith.busch@intel.com>
Reviewed-by: NVishal Verma <vishal.l.verma@linux.intel.com>
[fixed up CONFIG_COMPAT=n build problems]
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

This patch proposes to remove the use of the IRQF_DISABLED flag

It's a NOOP since 2.6.35 and it will be removed one day.
Signed-off-by: NMichael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Changes the type of dev->db_stride to unsigned and changes the value
stored there to be 1 << the current value. Then there is less
calculation to be done at completion time.
Signed-off-by: NHaiyan Hu <huhaiyan@huawei.com>
Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com>

Commit 7d02c4d6 ("iommu/shmobile: Enable the driver on all ARM
platforms") completely brokenly enabled the shmobile-iommu driver under
COMPILE_TEST.

It's bogus, because it won't compile anywhere else than ARM, since it
tries to include <asm/dma-iommu.h>, which is very much ARM-only.

So remove the bogus COMPILE_TEST dependency, which just causes
allmodconfig to fail on non-ARM platforms.

Cc: Joerg Roedel <joro@8bytes.org>
Cc: iommu@lists.linux-foundation.org
Cc: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Cc: Simon Horman <horms@verge.net.au>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

We moved minor deallocation to drm_dev_free() in:
  commit 8f6599da
  Author: David Herrmann <dh.herrmann@gmail.com>
  Date:   Sun Oct 20 18:55:45 2013 +0200

      drm: delay minor destruction to drm_dev_free()

However, this causes a call to drm_unplug_minor(), which should just do
nothing as drm_dev_unregister() already called this.

But a separate patch caused kdev lifetime changes:
  commit 5bdebb18
  Author: Dave Airlie <airlied@redhat.com>
  Date:   Fri Oct 11 14:07:25 2013 +1000

      drm/sysfs: sort out minor and connector device object lifetimes.

Thus making our dev_is_registered() call useles (and even segfault if it
is NULL). Replace it with a simple !kdev test and we're fine.
Reported-by: NHuax Lu <huax.lu@intel.com>
Reported-by: NDaniel Vetter <daniel@ffwll.ch>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=71208Tested-by: Nlu hua <huax.lu@intel.com>
Reviewed-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: NDavid Herrmann <dh.herrmann@gmail.com>
Signed-off-by: NDave Airlie <airlied@gmail.com>

The device lm90 can be controlled by the vcc rail.
Adding the regulator support to power on/off the vcc rail.
Enable the "vcc" regulator before accessing the device.

[JD: Rename variables to avoid confusion with registers.]
Signed-off-by: NWei Ni <wni@nvidia.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

TI TMP451 is mostly compatible with ADT7461, except for
local temperature low byte and max conversion rate.
Add support to the LM90 driver.
Signed-off-by: NWei Ni <wni@nvidia.com>
Reviewed-by: NGuenter Roeck <linux@roeck-us.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Using enums for the indexes and nrs of temp8 and temp11.
This make the code much more readable.
Signed-off-by: NWei Ni <wni@nvidia.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

When the temperature exceed the limit range value,
the driver can handle the interrupt.
Signed-off-by: NWei Ni <wni@nvidia.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add bit defines for the status register. And add a function
lm90_is_tripped() which will read status register and return
tripped or not, then lm90_alert can call it directly, and in the
future the IRQ thread also can use it.

[JD: Adjusted to include all the new MAX6696 status flags.]
Signed-off-by: NWei Ni <wni@nvidia.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Bit 2 of status register 2 on MAX6696 (external diode 2 open)
sets ALERT; the bit thus has to be listed in alert_alarms.
Also display a message in the alert handler if the condition
is encountered.

Even though not all overtemperature conditions cause ALERT
to be set, we should not ignore them in the alert handler.
Display messages for all out-of-range conditions.
Reported-by: NJean Delvare <khali@linux-fr.org>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>
Cc: stable@vger.kernel.org
Signed-off-by: NJean Delvare <khali@linux-fr.org>

commit 7e0be9f9 ('video: exynos_mipi_dsim:
Use the generic PHY driver') resulted in a warning about an unused
variable:

drivers/video/exynos/exynos_mipi_dsi.c:144:26: warning: unused variable
    'pdev' [-Wunused-variable]

It is indeed unused; remove it.
Signed-off-by: NOlof Johansson <olof@lixom.net>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: NInki Dae <inki.dae@samsung.com>

This reverts commit 5beea882 as it
breaks trackpoint operation on XT2.

This patch enhances the type safety for the kfifo API.  It is now safe
to put const data into a non const FIFO and the API will now generate a
compiler warning when reading from the fifo where the destination
address is pointing to a const variable.

As a side effect the kfifo_put() does now expect the value of an element
instead a pointer to the element.  This was suggested Russell King.  It
make the handling of the kfifo_put easier since there is no need to
create a helper variable for getting the address of a pointer or to pass
integers of different sizes.

IMHO the API break is okay, since there are currently only six users of
kfifo_put().

The code is also cleaner by kicking out the "if (0)" expressions.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: NStefani Seibold <stefani@seibold.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Make this useful helper available for other users.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NJan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.  This is a cosmetic change to make
the code simpler and enhance the readability.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Acked-by: NEvgeniy Polyakov <zbr@ioremap.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Use this new function to make code more comprehensible, since we are
reinitialzing the completion, not initializing.

[akpm@linux-foundation.org: linux-next resyncs]
Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13)
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Enable the processing of HID input records before the RTC will be
registered, in order to allow the RTC register function to read clock.
Without doing that the clock can only be read after the probe function
has finished.
Signed-off-by: NAlexander Holler <holler@ahsoftware.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.  This is a cosmetic change to
make the code simpler and enhance the readability.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: NWill Deacon <will.deacon@arm.com>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Cc: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

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: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Use module_pci_driver() macro which makes the code smaller and
simpler.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Casting the return value which is a void pointer is redundant.
The conversion from void pointer to any other pointer type is
guaranteed by the C programming language.
Signed-off-by: NJingoo Han <jg1.han@samsung.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

On OMAPs the IO ring must be rearmed each time the pad wakeup
configuration is changed. So call pcs_soc->rearm() from
pcs_irq_set().

As pinctrl-single is now an interrupt controller in some cases,
we should follow the standards and keep the interrupts enabled
constantly, and not just for wake-up events. The tracking of
runtime vs wake-up interrupts can be handled separately for
the automated runtime PM solution when we have it in the
future.
Signed-off-by: NRoger Quadros <rogerq@ti.com>
Acked-by: NLinus Walleij <linus.walleij@linaro.org>
[tony@atomide.com: removed wrong comment, updated description]
Signed-off-by: NTony Lindgren <tony@atomide.com>

Switch virtio-blk from the dual support for old-style requests and bios
to use the block-multiqueue.
Acked-by: NAsias He <asias@redhat.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>
Signed-off-by: NChristoph Hellwig <hch@lst.de>

Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

We care about the upper 32 bits here so we have to use 1ULL instead of 1
to avoid a shift wrapping bug.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NMaarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Signed-off-by: NBen Skeggs <bskeggs@redhat.com>

Signed-off-by: NBen Skeggs <bskeggs@redhat.com>