Provide the ability to request a default DSM family. If it is not
supported, then fall back to the normal discovery order.

This is helpful for testing platforms that support multiple DSM
families.  It will also allow administrators to request the DSM family
that their management tools support, which may not be the first one
found using the current discovery order.
Signed-off-by: NLinda Knippers <linda.knippers@hpe.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

As it is today, we can't enable or test new NVDIMM management functions
provided by new firmware and tools without changing the kernel.  We also
can't prevent documented DSM functions from being called in the case of
buggy firmware.  This patch provides a module parameter that overrides
the DSM function mask that is built into the kernel.

If the "disable_vendor_specific" module parameter is also used we ignore
the new parameter.
Signed-off-by: NLinda Knippers <linda.knippers@hpe.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

The following warning triggers with a new unit test that stresses the
device-dax interface.

 ===============================
 [ ERR: suspicious RCU usage.  ]
 4.11.0-rc4+ #1049 Tainted: G           O
 -------------------------------
 ./include/linux/rcupdate.h:521 Illegal context switch in RCU read-side critical section!

 other info that might help us debug this:

 rcu_scheduler_active = 2, debug_locks = 0
 2 locks held by fio/9070:
  #0:  (&mm->mmap_sem){++++++}, at: [<ffffffff8d0739d7>] __do_page_fault+0x167/0x4f0
  #1:  (rcu_read_lock){......}, at: [<ffffffffc03fbd02>] dax_dev_huge_fault+0x32/0x620 [dax]

 Call Trace:
  dump_stack+0x86/0xc3
  lockdep_rcu_suspicious+0xd7/0x110
  ___might_sleep+0xac/0x250
  __might_sleep+0x4a/0x80
  __alloc_pages_nodemask+0x23a/0x360
  alloc_pages_current+0xa1/0x1f0
  pte_alloc_one+0x17/0x80
  __pte_alloc+0x1e/0x120
  __get_locked_pte+0x1bf/0x1d0
  insert_pfn.isra.70+0x3a/0x100
  ? lookup_memtype+0xa6/0xd0
  vm_insert_mixed+0x64/0x90
  dax_dev_huge_fault+0x520/0x620 [dax]
  ? dax_dev_huge_fault+0x32/0x620 [dax]
  dax_dev_fault+0x10/0x20 [dax]
  __do_fault+0x1e/0x140
  __handle_mm_fault+0x9af/0x10d0
  handle_mm_fault+0x16d/0x370
  ? handle_mm_fault+0x47/0x370
  __do_page_fault+0x28c/0x4f0
  trace_do_page_fault+0x58/0x2a0
  do_async_page_fault+0x1a/0xa0
  async_page_fault+0x28/0x30

Inserting a page table entry may trigger an allocation while we are
holding a read lock to keep the device instance alive for the duration
of the fault. Use srcu for this keep-alive protection.

Fixes: dee41079 ("/dev/dax, core: file operations and dax-mmap")
Cc: <stable@vger.kernel.org>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

The following warning results from holding a lane spinlock,
preempt_disable(), or the btt map spinlock and then trying to take the
reconfig_mutex to walk the poison list and potentially add new entries.

 BUG: sleeping function called from invalid context at kernel/locking/mutex.c:747
 in_atomic(): 1, irqs_disabled(): 0, pid: 17159, name: dd
 [..]
 Call Trace:
  dump_stack+0x85/0xc8
  ___might_sleep+0x184/0x250
  __might_sleep+0x4a/0x90
  __mutex_lock+0x58/0x9b0
  ? nvdimm_bus_lock+0x21/0x30 [libnvdimm]
  ? __nvdimm_bus_badblocks_clear+0x2f/0x60 [libnvdimm]
  ? acpi_nfit_forget_poison+0x79/0x80 [nfit]
  ? _raw_spin_unlock+0x27/0x40
  mutex_lock_nested+0x1b/0x20
  nvdimm_bus_lock+0x21/0x30 [libnvdimm]
  nvdimm_forget_poison+0x25/0x50 [libnvdimm]
  nvdimm_clear_poison+0x106/0x140 [libnvdimm]
  nsio_rw_bytes+0x164/0x270 [libnvdimm]
  btt_write_pg+0x1de/0x3e0 [nd_btt]
  ? blk_queue_enter+0x30/0x290
  btt_make_request+0x11a/0x310 [nd_btt]
  ? blk_queue_enter+0xb7/0x290
  ? blk_queue_enter+0x30/0x290
  generic_make_request+0x118/0x3b0

As a minimal fix, disable error clearing when the BTT is enabled for the
namespace. For the final fix a larger rework of the poison list locking
is needed.

Note that this is not a problem in the blk case since that path never
calls nvdimm_clear_poison().

Cc: <stable@vger.kernel.org>
Fixes: 82bf1037 ("libnvdimm: check and clear poison before writing to pmem")
Cc: Dave Jiang <dave.jiang@intel.com>
[jeff: dynamically disable error clearing in the btt case]
Suggested-by: NJeff Moyer <jmoyer@redhat.com>
Reviewed-by: NJeff Moyer <jmoyer@redhat.com>
Reported-by: NVishal Verma <vishal.l.verma@intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

Holding the reconfig_mutex over a potential userspace fault sets up a
lockdep dependency chain between filesystem-DAX and the libnvdimm ioctl
path. Move the user access outside of the lock.

     [ INFO: possible circular locking dependency detected ]
     4.11.0-rc3+ #13 Tainted: G        W  O
     -------------------------------------------------------
     fallocate/16656 is trying to acquire lock:
      (&nvdimm_bus->reconfig_mutex){+.+.+.}, at: [<ffffffffa00080b1>] nvdimm_bus_lock+0x21/0x30 [libnvdimm]
     but task is already holding lock:
      (jbd2_handle){++++..}, at: [<ffffffff813b4944>] start_this_handle+0x104/0x460

    which lock already depends on the new lock.

    the existing dependency chain (in reverse order) is:

    -> #2 (jbd2_handle){++++..}:
            lock_acquire+0xbd/0x200
            start_this_handle+0x16a/0x460
            jbd2__journal_start+0xe9/0x2d0
            __ext4_journal_start_sb+0x89/0x1c0
            ext4_dirty_inode+0x32/0x70
            __mark_inode_dirty+0x235/0x670
            generic_update_time+0x87/0xd0
            touch_atime+0xa9/0xd0
            ext4_file_mmap+0x90/0xb0
            mmap_region+0x370/0x5b0
            do_mmap+0x415/0x4f0
            vm_mmap_pgoff+0xd7/0x120
            SyS_mmap_pgoff+0x1c5/0x290
            SyS_mmap+0x22/0x30
            entry_SYSCALL_64_fastpath+0x1f/0xc2

    -> #1 (&mm->mmap_sem){++++++}:
            lock_acquire+0xbd/0x200
            __might_fault+0x70/0xa0
            __nd_ioctl+0x683/0x720 [libnvdimm]
            nvdimm_ioctl+0x8b/0xe0 [libnvdimm]
            do_vfs_ioctl+0xa8/0x740
            SyS_ioctl+0x79/0x90
            do_syscall_64+0x6c/0x200
            return_from_SYSCALL_64+0x0/0x7a

    -> #0 (&nvdimm_bus->reconfig_mutex){+.+.+.}:
            __lock_acquire+0x16b6/0x1730
            lock_acquire+0xbd/0x200
            __mutex_lock+0x88/0x9b0
            mutex_lock_nested+0x1b/0x20
            nvdimm_bus_lock+0x21/0x30 [libnvdimm]
            nvdimm_forget_poison+0x25/0x50 [libnvdimm]
            nvdimm_clear_poison+0x106/0x140 [libnvdimm]
            pmem_do_bvec+0x1c2/0x2b0 [nd_pmem]
            pmem_make_request+0xf9/0x270 [nd_pmem]
            generic_make_request+0x118/0x3b0
            submit_bio+0x75/0x150

Cc: <stable@vger.kernel.org>
Fixes: 62232e45 ("libnvdimm: control (ioctl) messages for nvdimm_bus and nvdimm devices")
Cc: Dave Jiang <dave.jiang@intel.com>
Reported-by: NVishal Verma <vishal.l.verma@intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

Commit a1f3e4d6 "libnvdimm, region: update nd_region_available_dpa()
for multi-pmem support" reworked blk dpa (DIMM Physical Address)
accounting to comprehend multiple pmem namespace allocations aliasing
with a given blk-dpa range.

The following call trace is a result of failing to account for allocated
blk capacity.

 WARNING: CPU: 1 PID: 2433 at tools/testing/nvdimm/../../../drivers/nvdimm/names
4 size_store+0x6f3/0x930 [libnvdimm]
 nd_region region5: allocation underrun: 0x0 of 0x1000000 bytes
 [..]
 Call Trace:
  dump_stack+0x86/0xc3
  __warn+0xcb/0xf0
  warn_slowpath_fmt+0x5f/0x80
  size_store+0x6f3/0x930 [libnvdimm]
  dev_attr_store+0x18/0x30

If a given blk-dpa allocation does not alias with any pmem ranges then
the full allocation should be accounted as busy space, not the size of
the current pmem contribution to the region.

The thinkos that led to this confusion was not realizing that the struct
resource management is already guaranteeing no collisions between pmem
allocations and blk allocations on the same dimm. Also, we do not try to
support blk allocations in aliased pmem holes.

This patch also fixes a case where the available blk goes negative.

Cc: <stable@vger.kernel.org>
Fixes: a1f3e4d6 ("libnvdimm, region: update nd_region_available_dpa() for multi-pmem support").
Reported-by: NDariusz Dokupil <dariusz.dokupil@intel.com>
Reported-by: NDave Jiang <dave.jiang@intel.com>
Reported-by: NVishal Verma <vishal.l.verma@intel.com>
Tested-by: NDave Jiang <dave.jiang@intel.com>
Tested-by: NVishal Verma <vishal.l.verma@intel.com>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

While reviewing the -stable patch for commit 86ef58a4 "nfit,
libnvdimm: fix interleave set cookie calculation" Ben noted:

    "This is returning an int, thus it's effectively doing a 32-bit
     comparison and not the 64-bit comparison you say is needed."

Update the compare operation to be immune to this integer demotion problem.

Cc: <stable@vger.kernel.org>
Cc: Nicholas Moulin <nicholas.w.moulin@linux.intel.com>
Fixes: 86ef58a4 ("nfit, libnvdimm: fix interleave set cookie calculation")
Reported-by: NBen Hutchings <ben@decadent.org.uk>
Signed-off-by: NDan Williams <dan.j.williams@intel.com>

aarch64-linux-gcc-7 complains about code it doesn't fully understand:

drivers/infiniband/hw/qib/qib_iba7322.c: In function 'qib_7322_txchk_change':
include/asm-generic/bitops/non-atomic.h:105:35: error: 'shadow' may be used uninitialized in this function [-Werror=maybe-uninitialized]

The code is right, and despite trying hard, I could not come up with a version
that I liked better than just adding a fake initialization here to shut up the
warning.

Fixes: f931551b ("IB/qib: Add new qib driver for QLogic PCIe InfiniBand adapters")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NIra Weiny <ira.weiny@intel.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

When the rdma device is removed, we must cleanup all
the rdma resources within the DEVICE_REMOVAL event
handler to let the device teardown gracefully. When
this happens with live I/O, some memory regions are
occupied. Thus, track them too and dereg all the mr's.

We are safe with mr access by iscsi_iser_cleanup_task.
Reported-by: NRaju Rangoju <rajur@chelsio.com>
Signed-off-by: NSagi Grimberg <sagi@grimberg.me>
Reviewed-by: NMax Gurtovoy <maxg@mellanox.com>
Reviewed-by: NMax Gurtovoy <maxg@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

This workqueue is used by our storage target mode ULPs
via the new CQ API. Recent observations when working
with very high-end flash storage devices reveal that
UNBOUND workqueue threads can migrate between cpu cores
and even numa nodes (although some numa locality is accounted
for).

While this attribute can be useful in some workloads,
it does not fit in very nicely with the normal
run-to-completion model we usually use in our target-mode
ULPs and the block-mq irq<->cpu affinity facilities.

The whole block-mq concept is that the completion will
land on the same cpu where the submission was performed.
The fact that our submitter thread is migrating cpus
can break this locality.

We assume that as a target mode ULP, we will serve multiple
initiators/clients and we can spread the load enough without
having to use unbound kworkers.

Also, while we're at it, expose this workqueue via sysfs which
is harmless and can be useful for debug.
Signed-off-by: NSagi Grimberg <sagi@grimberg.me>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>--
Signed-off-by: NDoug Ledford <dledford@redhat.com>

The caller might not want this overhead.
Reviewed-by: NBart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NSagi Grimberg <sagi@grimberg.me>
Reviewed-by: NYuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

According to C9-147, MSN should only be incremented when the last packet of
a multi packet request has been received.

"Logically, the requester associates a sequential Send Sequence Number
(SSN) with each WQE posted to the send queue. The SSN bears a one-
to-one relationship to the MSN returned by the responder in each re-
sponse packet. Therefore, when the requester receives a response, it in-
terprets the MSN as representing the SSN of the most recent request
completed by the responder to determine which send WQE(s) can be
completed."

Fixes: 8700e3e7 ("Soft RoCE driver")
Signed-off-by: NDavid Marchand <david.marchand@6wind.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Avoid that the following error message is reported on the console
while loading an RDMA driver with I/O MMU support enabled:

DMAR: Allocating domain for mlx5_0 failed

Ensure that DMA mapping operations that use to_pci_dev() to
access to struct pci_dev see the correct PCI device. E.g. the s390
and powerpc DMA mapping operations use to_pci_dev() even with I/O
MMU support disabled.

This patch preserves the following changes of the DMA mapping updates
patch series:
- Introduction of dma_virt_ops.
- Removal of ib_device.dma_ops.
- Removal of struct ib_dma_mapping_ops.
- Removal of an if-statement from each ib_dma_*() operation.
- IB HW drivers no longer set dma_device directly.
Reported-by: NSebastian Ott <sebott@linux.vnet.ibm.com>
Reported-by: NParav Pandit <parav@mellanox.com>
Fixes: commit 99db9494 ("IB/core: Remove ib_device.dma_device")
Signed-off-by: NBart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: parav@mellanox.com
Tested-by: parav@mellanox.com
Reviewed-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

All Soft-RoCE (rxe) is handled now in rdma-core user space library,
so the documentation. The patch below updates the documentation
link to that new location.
Reported-by: NJosh Beavers <josh.beavers@gmail.com>
Signed-off-by: NLeon Romanovsky <leon@kernel.org>
Reviewed-by: NIra Weiny <ira.weiny@intel.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

We want to return zero on success or negative error codes.  The type
should be int and not u8.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: NYuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

"goto err;" has it's own kfree_skb() call so it's a double free.  We
only need to free on the "goto exit;" path.

Fixes: 8700e3e7 ("Soft RoCE driver")
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Restore device state when ethernet link changes to active.
Acked-by: NGeorge Zhang <georgezhang@vmware.com>
Acked-by: NJorgen Hansen <jhansen@vmware.com>
Acked-by: NBryan Tan <bryantan@vmware.com>
Signed-off-by: NAditya Sarwade <asarwade@vmware.com>
Signed-off-by: NAdit Ranadive <aditr@vmware.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Moved the header page count to a macro.
Reported-by: NYuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: NAdit Ranadive <aditr@vmware.com>
Reviewed-by: NAditya Sarwade <asarwade@vmware.com>
Tested-by: NAndrew Boyer <andrew.boyer@dell.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Removed the unused nreq and redundant index variables.
Moved hardcoded async and cq ring pages number to macro.
Reported-by: NYuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: NAdit Ranadive <aditr@vmware.com>
Reviewed-by: NAditya Sarwade <asarwade@vmware.com>
Tested-by: NAndrew Boyer <andrew.boyer@dell.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

When vmalloc_user is used to create memory that is supposed to be mmap'd
to user space, it is necessary for the mmap cookie (eg the offset) to be
aligned to SHMLBA.

This creates a situation where all virtual mappings of the same physical
page share the same virtual cache index and guarantees VIPT coherence.
Otherwise the cache is non-coherent and the kernel will not see writes
by userspace when reading the shared page (or vice-versa).
Reported-by: NJosh Beavers <josh.beavers@gmail.com>
Signed-off-by: NJason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

We need to make sure that the cq work item does not
run when we are destroying the cq. Unlike flush_work,
cancel_work_sync protects against self-requeue of the
work item (which we can do in ib_cq_poll_work).
Signed-off-by: NSagi Grimberg <sagi@grimberg.me>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bart.vanassche@sandisk.com>--
Reviewed-by: NLeon Romanovsky <leonro@mellanox.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

Netdev notification events are de-registered only when all
client iwdev instances are removed. If a single client is closed
and re-opened, netdev events could arrive even before the Control
Queue-Pair (CQP) is created, causing a NULL pointer dereference crash
in i40iw_get_cqp_request. Fix this by allowing netdev event
notification only after we have reached the INET_NOTIFIER state with
respect to device initialization.
Reported-by: NStefan Assmann <sassmann@redhat.com>
Signed-off-by: NShiraz Saleem <shiraz.saleem@intel.com>
Reviewed-by: NYuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: NDoug Ledford <dledford@redhat.com>

The latest gcc-7 snapshot adds a warning to point out that when
atk_read_value_old or atk_read_value_new fails, we copy
uninitialized data into sensor->cached_value:

drivers/hwmon/asus_atk0110.c: In function 'atk_input_show':
drivers/hwmon/asus_atk0110.c:651:26: error: 'value' may be used uninitialized in this function [-Werror=maybe-uninitialized]

Adding an error check avoids this. All versions of the driver
are affected.

Fixes: 2c03d07a ("hwmon: Add Asus ATK0110 support")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Reviewed-by: NLuca Tettamanti <kronos.it@gmail.com>
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

This was broken in commit cd979883 ("xen/acpi-processor:
fix enabling interrupts on syscore_resume"). do_suspend (from
xen/manage.c) and thus xen_resume_notifier never get called on
the initial-domain at resume (it is if running as guest.)

The rationale for the breaking change was that upload_pm_data()
potentially does blocking work in syscore_resume(). This patch
addresses the original issue by scheduling upload_pm_data() to
execute in workqueue context.

Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: stable@vger.kernel.org
Based-on-patch-by: NKonrad Wilk <konrad.wilk@oracle.com>
Reviewed-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: NStanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: NAnkur Arora <ankur.a.arora@oracle.com>
Signed-off-by: NBoris Ostrovsky <boris.ostrovsky@oracle.com>

Otherwise this can also prevent modesets e.g. for switching VTs, when
multiple monitors with different native resolutions are connected.

The depths must match though, so keep the != test for that.

Also update the DRM_DEBUG output to be slightly more accurate, this
doesn't only affect requests from userspace.

Bugzilla: https://bugs.freedesktop.org/99841
Fixes: 865afb11 ("drm/fb-helper: reject any changes to the fbdev")
Signed-off-by: NMichel Dänzer <michel.daenzer@amd.com>
Reviewed-by: NDaniel Stone <daniels@collabora.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20170323085326.20185-1-michel@daenzer.net

Replace hard coded "ACPI0007" with ACPI_PROCESSOR_DEVICE_HID
Reviewed-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Signed-off-by: NAnkur Arora <ankur.a.arora@oracle.com>
Signed-off-by: NBoris Ostrovsky <boris.ostrovsky@oracle.com>

Disabling interrupts for even a millisecond can cause problems for some
devices. That can happen when Intel host controllers wait for the present
state to propagate.

The spin lock is not necessary here. Anything that is racing with changes
to the I/O state is already broken. The mmc core already provides
synchronization via "claiming" the host.

Although the spin lock probably should be removed from the code paths that
lead to this point, such a patch would touch too much code to be suitable
for stable trees. Consequently, for this patch, just drop the spin lock
while waiting.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Tested-by: NLudovic Desroches <ludovic.desroches@microchip.com>

Disabling interrupts for even a millisecond can cause problems for some
devices. That can happen when sdhci changes clock frequency because it
waits for the clock to become stable under a spin lock.

The spin lock is not necessary here. Anything that is racing with changes
to the I/O state is already broken. The mmc core already provides
synchronization via "claiming" the host.

Although the spin lock probably should be removed from the code paths that
lead to this point, such a patch would touch too much code to be suitable
for stable trees. Consequently, for this patch, just drop the spin lock
while waiting.
Signed-off-by: NAdrian Hunter <adrian.hunter@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
Tested-by: NLudovic Desroches <ludovic.desroches@microchip.com>

Since AQC-100/107/108 chips supports hardware checksums for RX we should indicate this
via NETIF_F_RXCSUM flag.

v1->v2: 'Signed-off-by' tag added.
Signed-off-by: NPavel Belous <pavel.belous@aquantia.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The ECC bit positions that describe whether the ECC interrupt is for
Tx, Rx or descriptor memory and whether the it is a single correctable
or double detected error were defined in incorrectly (reversed order).
Fix the bit position definitions for these settings so that the proper
ECC handling is performed.
Signed-off-by: NTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Presumably if there is an "add" function, there is also a "del"
function.  But it causes a static checker warning because it looks like
a common cut and paste bug.
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Acked-by: NJarod Wilson <jarod@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

compile-testing fails when QCOM_SMD is a loadable module:

drivers/bluetooth/built-in.o: In function `btqcomsmd_send':
btqca.c:(.text+0xa8): undefined reference to `qcom_smd_send'
drivers/bluetooth/built-in.o: In function `btqcomsmd_probe':
btqca.c:(.text+0x3ec): undefined reference to `qcom_wcnss_open_channel'
btqca.c:(.text+0x46c): undefined reference to `qcom_smd_set_drvdata'

This clarifies the dependency to allow compile-testing only when
SMD is completely disabled, otherwise the dependency on QCOM_SMD
will make sure we can link against it.

Fixes: e27ee2b1 ("Bluetooth: btqcomsmd: Allow driver to build if COMPILE_TEST is enabled")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
[bjorn: Restructure and clarify dependency to QCOM_WCNSS_CTRL]
Signed-off-by: NBjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Commit 6ac3ce82 ("net: bcmgenet: Remove excessive PHY reset")
removed the bcmgenet_mii_reset() function from bcmgenet_power_up() and
bcmgenet_internal_phy_setup() functions.  In so doing it broke the reset
of the internal PHY devices used by the GENETv1-GENETv3 which required
this reset before the UniMAC was enabled.  It also broke the internal
GPHY devices used by the GENETv4 because the config_init that installed
the AFE workaround was no longer occurring after the reset of the GPHY
performed by bcmgenet_phy_power_set() in bcmgenet_internal_phy_setup().
In addition the code in bcmgenet_internal_phy_setup() related to the
"enable APD" comment goes with the bcmgenet_mii_reset() so it should
have also been removed.

Commit bd4060a6 ("net: bcmgenet: Power on integrated GPHY in
bcmgenet_power_up()") moved the bcmgenet_phy_power_set() call to the
bcmgenet_power_up() function, but failed to remove it from the
bcmgenet_internal_phy_setup() function.  Had it done so, the
bcmgenet_internal_phy_setup() function would have been empty and could
have been removed at that time.

Commit 5dbebbb4 ("net: bcmgenet: Software reset EPHY after power on")
was submitted to correct the functional problems introduced by
commit 6ac3ce82 ("net: bcmgenet: Remove excessive PHY reset"). It
was included in v4.4 and made available on 4.3-stable. Unfortunately,
it didn't fully revert the commit because this bcmgenet_mii_reset()
doesn't apply the soft reset to the internal GPHY used by GENETv4 like
the previous one did. This prevents the restoration of the AFE work-
arounds for internal GPHY devices after the bcmgenet_phy_power_set() in
bcmgenet_internal_phy_setup().

This commit takes the alternate approach of removing the unnecessary
bcmgenet_internal_phy_setup() function which shouldn't have been in v4.3
so that when bcmgenet_mii_reset() was restored it should have only gone
into bcmgenet_power_up().  This will avoid the problems while also
removing the redundancy (and hopefully some of the confusion).

Fixes: 6ac3ce82 ("net: bcmgenet: Remove excessive PHY reset")
Signed-off-by: NDoug Berger <opendmb@gmail.com>
Reviewed-by: NFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The extended device socket cannot turn on/off while system is running.
So when system boots up and the device is not power on, the fjes driver
does not need be loaded.

To check the status of the device, the patch adds ACPI _STA method check.
Signed-off-by: NYasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
CC: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The fjes driver is used only by FUJITSU servers and almost of all
servers in the world never use it. But currently if ACPI PNP0C02
is defined in the ACPI table, the following message is always shown:

 "FUJITSU Extended Socket Network Device Driver - version 1.2
  - Copyright (c) 2015 FUJITSU LIMITED"

The message makes users confused because there is no reason that
the message is shown in other vendor servers.

To avoid the confusion, the patch adds a check that the server
has a extended socket device or not.
Signed-off-by: NYasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
CC: Taku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

RX packets statistics ('rx_packets' counter) used to count LRO packets
as one, even though it contains multiple segments.
This patch will increment the counter by the number of segments, and
align the driver with the behavior of other drivers in the stack.

Note that no information is lost in this patch due to 'rx_lro_packets'
counter existence.

Before, ethtool showed:
$ ethtool -S ens6 | egrep "rx_packets|rx_lro_packets"
     rx_packets: 435277
     rx_lro_packets: 35847
     rx_packets_phy: 1935066

Now, we will see the more logical statistics:
$ ethtool -S ens6 | egrep "rx_packets|rx_lro_packets"
     rx_packets: 1935066
     rx_lro_packets: 35847
     rx_packets_phy: 1935066

Fixes: e586b3b0 ("net/mlx5: Ethernet Datapath files")
Signed-off-by: NGal Pressman <galp@mellanox.com>
Cc: kernel-team@fb.com
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

TX packets statistics ('tx_packets' counter) used to count GSO packets
as one, even though it contains multiple segments.
This patch will increment the counter by the number of segments, and
align the driver with the behavior of other drivers in the stack.

Note that no information is lost in this patch due to 'tx_tso_packets'
counter existence.

Before, ethtool showed:
$ ethtool -S ens6 | egrep "tx_packets|tx_tso_packets"
     tx_packets: 61340
     tx_tso_packets: 60954
     tx_packets_phy: 2451115

Now, we will see the more logical statistics:
$ ethtool -S ens6 | egrep "tx_packets|tx_tso_packets"
     tx_packets: 2451115
     tx_tso_packets: 60954
     tx_packets_phy: 2451115

Fixes: e586b3b0 ("net/mlx5: Ethernet Datapath files")
Signed-off-by: NGal Pressman <galp@mellanox.com>
Cc: kernel-team@fb.com
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
Acked-by: NAlexei Starovoitov <ast@kernel.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

With ConnectX-4 sharing SRQs from the same space as QPs, we hit a
limit preventing some applications to allocate needed QPs amount.
Double the size to 256K.

Fixes: e126ba97 ('mlx5: Add driver for Mellanox Connect-IB adapters')
Signed-off-by: NMaor Gottlieb <maorg@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This was added to allow the TC offloading code to identify offloading
encap/decap vxlan rules.

The VF reps are effectively related to the same mlx5 PCI device as the
PF. Since the kernel invokes the (say) delete ndo for each netdev, the
FW erred on multiple vxlan dst port deletes when the port was deleted
from the system.

We fix that by keeping the registration to be carried out only by the
PF. Since the PF serves as the uplink device, the VF reps will look
up a port there and realize if they are ok to offload that.

Tested:
 <SETUP VFS>
 <SETUP switchdev mode to have representors>
 ip link add vxlan1 type vxlan id 44 dev ens5f0 dstport 9999
 ip link set vxlan1 up
 ip link del dev vxlan1

Fixes: 4a25730e ('net/mlx5e: Add ndo_udp_tunnel_add to VF representors')
Signed-off-by: NPaul Blakey <paulb@mellanox.com>
Reviewed-by: NOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Currently we use the non UAPI values and we miss erring on
the modify action which is not supported, fix that.

Fixes: 8b32580d ('net/mlx5e: Add TC vlan action for SRIOV offloads')
Signed-off-by: NOr Gerlitz <ogerlitz@mellanox.com>
Reported-by: NPetr Machata <petrm@mellanox.com>
Reviewed-by: NJiri Pirko <jiri@mellanox.com>
Signed-off-by: NSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>