Commit graph

99,137 commits

Author SHA1 Message Date
Frederic Barrat
5ef3166e8a ocxl: Driver code for 'generic' opencapi devices
Add an ocxl driver to handle generic opencapi devices. Of course, it's
not meant to be the only opencapi driver, any device is free to
implement its own. But if a host application only needs basic services
like attaching to an opencapi adapter, have translation faults handled
or allocate AFU interrupts, it should suffice.

The AFU config space must follow the opencapi specification and use
the expected vendor/device ID to be seen by the generic driver.

The driver exposes the device AFUs as a char device in /dev/ocxl/

Note that the driver currently doesn't handle memory attached to the
opencapi device.

Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-24 11:42:58 +11:00
Frederic Barrat
2cb3d64b26 powerpc/powernv: Capture actag information for the device
In the opencapi protocol, host memory contexts are referenced by a
'actag'. During setup, a driver must tell the device how many actags
it can used, and what values are acceptable.

On POWER9, the NPU can handle 64 actags per link, so they must be
shared between all the PCI functions of the link. To get a global
picture of how many actags are used by each AFU of every function, we
capture some data at the end of PCI enumeration, so that actags can be
shared fairly if needed.

This is not powernv specific per say, but rather a consequence of the
opencapi configuration specification being quite general. The number
of available actags on POWER9 makes it more likely to be hit. This is
somewhat mitigated by the fact that existing AFUs are coded by
requesting a reasonable count of actags and existing devices carry
only one AFU.

Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-24 11:42:57 +11:00
Steven Rostedt (VMware)
6be7fa3c74 ftrace, orc, x86: Handle ftrace dynamically allocated trampolines
The function tracer can create a dynamically allocated trampoline that is
called by the function mcount or fentry hook that is used to call the
function callback that is registered. The problem is that the orc undwinder
will bail if it encounters one of these trampolines. This breaks the stack
trace of function callbacks, which include the stack tracer and setting the
stack trace for individual functions.

Since these dynamic trampolines are basically copies of the static ftrace
trampolines defined in ftrace_*.S, we do not need to create new orc entries
for the dynamic trampolines. Finding the return address on the stack will be
identical as the functions that were copied to create the dynamic
trampolines. When encountering a ftrace dynamic trampoline, we can just use
the orc entry of the ftrace static function that was copied for that
trampoline.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2018-01-23 15:56:55 -05:00
Jay Cornwall
430a23689d PCI: Add pci_enable_atomic_ops_to_root()
The Atomic Operations feature (PCIe r4.0, sec 6.15) allows atomic
transctions to be requested by, routed through and completed by PCIe
components. Routing and completion do not require software support.
Component support for each is detectable via the DEVCAP2 register.

A Requester may use AtomicOps only if its PCI_EXP_DEVCTL2_ATOMIC_REQ is
set. This should be set only if the Completer and all intermediate routing
elements support AtomicOps.

A concrete example is the AMD Fiji-class GPU (which is capable of making
AtomicOp requests), below a PLX 8747 switch (advertising AtomicOp routing)
with a Haswell host bridge (advertising AtomicOp completion support).

Add pci_enable_atomic_ops_to_root() for per-device control over AtomicOp
requests. This checks to be sure the Root Port supports completion of the
desired AtomicOp sizes and the path to the Root Port supports routing the
AtomicOps.

Signed-off-by: Jay Cornwall <Jay.Cornwall@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
[bhelgaas: changelog, comments, whitespace]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2018-01-23 14:46:50 -06:00
Trond Myklebust
8f39fce84a NFS-over-RDMA client updates for Linux 4.16
New features:
 - xprtrdma tracepoints
 
 Bugfixes and cleanups:
 - Fix memory leak if rpcrdma_buffer_create() fails
 - Fix allocating extra rpcrdma_reps for the backchannel
 - Remove various unused and redundant variables and lock cycles
 - Fix IPv6 support in xprt_rdma_set_port()
 - Fix memory leak by calling buf_free for callback replies
 - Fix "bytes registered" accounting
 - Fix kernel-doc comments
 - SUNRPC tracepoint cleanups for consistent information
 - Optimizations for __rpc_execute()
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEnZ5MQTpR7cLU7KEp18tUv7ClQOsFAlpniEEACgkQ18tUv7Cl
 QOsoGQ//ctg5iKTLlnjobnPdtS4zCQCgD8upx/FLawo/LCkDRiRD+lPNbSWy25db
 Z/YcYslUuwli3J9PoF36DxBAoep+N5LvD2IIwifr72tbwaRR+gK/xRdxdbiFXYod
 9HK+qBN5qRcgKpxPoHHGj9CoF/6ATcqyLhy7bP30UjNhydmlkaYEF1KXeO/l4NQu
 CQUyumdy0M9T8QW4EkXY2vkjS9leC4byI8P4iMaJnq157sYYVxLMryDGayK4ZJNH
 kmeAZoDhvNm+HKyD7vX90+w8/LPQutJ/A7m309KyMHiZZ23KxDW7r9ZclzcOswd1
 NY8HjyUHjl6gvFN9DmtOz95eKmmh1SpCQstw6lKTtNBVzP3+Dw9Lp2tLQFwuCe9y
 uzD/GYcFJECyBoHU4xsm9kV0PuzwAfvXahnylLjf7yV4MlDpjOZQT/vMvA96XHo6
 oOpT3+zikwCHz2FZM0cj5fQ0uQrxsx2zxAcmr8v5StC17Ng94LQH5ByAiOleJ14p
 Az+mAYATNgmSDD07+7UrEH7LD1b2h2xmdbaOa7UXeK2jJaYewGlUEKhKXIhjKJy9
 t2yecGKj4Y7omkNf/0YHle2t6WhNyFqjpISiF1KwuGHuqU5krPCpgKBOnuABcJTx
 D1BuSw4YQ5ZDfb2w0HAbPuwwRnU5FY1K79MIm7VkdE9ozWfmShA=
 =67UR
 -----END PGP SIGNATURE-----

Merge tag 'nfs-rdma-for-4.16-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

NFS-over-RDMA client updates for Linux 4.16

New features:
- xprtrdma tracepoints

Bugfixes and cleanups:
- Fix memory leak if rpcrdma_buffer_create() fails
- Fix allocating extra rpcrdma_reps for the backchannel
- Remove various unused and redundant variables and lock cycles
- Fix IPv6 support in xprt_rdma_set_port()
- Fix memory leak by calling buf_free for callback replies
- Fix "bytes registered" accounting
- Fix kernel-doc comments
- SUNRPC tracepoint cleanups for consistent information
- Optimizations for __rpc_execute()
2018-01-23 14:55:50 -05:00
David S. Miller
5ca114400d Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
en_rx_am.c was deleted in 'net-next' but had a bug fixed in it in
'net'.

The esp{4,6}_offload.c conflicts were overlapping changes.
The 'out' label is removed so we just return ERR_PTR(-EINVAL)
directly.

Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-23 13:51:56 -05:00
Benjamin Coddington
0be283f676 SUNRPC: Fix null rpc_clnt dereference in rpc_task_queued tracepoint
Backchannel tasks will not have a reference to the rpc_clnt.  Return -1 for
cl_clid in that case.

Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trondmy@gmail.com>
2018-01-23 13:18:11 -05:00
Eric W. Biederman
83b57531c5 mm/memory_failure: Remove unused trapno from memory_failure
Today 4 architectures set ARCH_SUPPORTS_MEMORY_FAILURE (arm64, parisc,
powerpc, and x86), while 4 other architectures set __ARCH_SI_TRAPNO
(alpha, metag, sparc, and tile).  These two sets of architectures do
not interesect so remove the trapno paramater to remove confusion.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2018-01-23 12:17:42 -06:00
Bart Van Assche
19f313438c IB/srp: Add RDMA/CM support
Since the SRP_LOGIN_REQ defined in the SRP standard is larger than
what fits in the RDMA/CM login request private data, introduce a new
login request format for the RDMA/CM.

Note: since srp_daemon and ibsrpdm rely on the subnet manager and
since there is no equivalent of the IB subnet manager in non-IB
networks, login has to be performed manually for non-IB networks.

Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-23 11:35:04 -05:00
Florian Fainelli
9e55e5d30f net: core: Fix kernel-doc for carrier_* attributes
Fix the documentation warning:

include/linux/netdevice.h:1939: warning: Excess struct member 'carrier_changes' description in 'net_device'

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: b2d3bcfa26 ("net: core: Expose number of link up/down transitions")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-23 11:06:50 -05:00
Chuck Lever
520694496a sunrpc: Format RPC events consistently for display
Clean up: Make it easier to use text search when browsing a trace
report. Other events use "status=%d".

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:39 -05:00
Chuck Lever
82476d9f95 SUNRPC: Trace xprt_timer events
Track RPC timeouts: report the XID and the server address to match
the content of network capture.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:39 -05:00
Chuck Lever
ae72467625 xprtrdma: Instrument allocation/release of rpcrdma_req/rep objects
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:38 -05:00
Chuck Lever
643cf3237d xprtrdma: Add trace points to instrument QP and CQ access upcalls
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:38 -05:00
Chuck Lever
fc1eb8076f xprtrdma: Add trace points in the client-side backchannel code paths
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:37 -05:00
Chuck Lever
b4744e00a3 xprtrdma: Add trace points for connect events
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:37 -05:00
Chuck Lever
1c443effa3 xprtrdma: Add trace points to instrument MR allocation and recovery
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:36 -05:00
Chuck Lever
2937fede11 xprtrdma: Add trace points to instrument memory invalidation
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:36 -05:00
Chuck Lever
e11b7c9655 xprtrdma: Add trace points in reply decoder path
This includes decoding Write and Reply chunks, and fixing up inline
payloads.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:36 -05:00
Chuck Lever
58f10ad40d xprtrdma: Add trace points to instrument memory registration
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:35 -05:00
Chuck Lever
b4a7f91c1d xprtrdma: Add trace points in the RPC Reply handler paths
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:35 -05:00
Chuck Lever
ab03eff58e xprtrdma: Add trace points in RPC Call transmit paths
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:35 -05:00
Chuck Lever
e48f083e19 rpcrdma: infrastructure for static trace points in rpcrdma.ko
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:25 -05:00
Chuck Lever
6b3a60ae7b rdma/ib: Add trace point macros to display human-readable values
These can be shared with all kernel ULPs, and more can easily be
added as needed.

Note: checkpatch.pl has some heartburn with the TRACE_DEFINE_ENUM
macros and the LIST macros. These follow the same style as other
header files under include/tracing/events , thus should be
considered acceptable exceptions.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Acked-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2018-01-23 09:44:14 -05:00
Bob Peterson
805c090750 GFS2: Log the reason for log flushes in every log header
This patch just adds the capability for GFS2 to track which function
called gfs2_log_flush. This should make it easier to diagnose
problems based on the sequence of events found in the journals.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
2018-01-23 07:39:20 -07:00
Bob Peterson
c1696fb85d GFS2: Introduce new gfs2_log_header_v2
This patch adds a new structure called gfs2_log_header_v2 which is used
to store expanded fields into previously unused areas of the log headers
(i.e., this change is backwards compatible).  Some of these are used for
debug purposes so we can backtrack when problems occur.  Others are
reserved for future expansion.

This patch is based on a prototype from Steve Whitehouse.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
2018-01-23 07:38:53 -07:00
Sakari Ailus
3580112b6d media: entity: Add a nop variant of media_entity_cleanup
Add nop variant of media_entity_cleanup. This allows calling
media_entity_cleanup whether or not Media controller is enabled,
simplifying driver code.

Also drop #ifdefs on a few drivers around media_entity_cleanup().

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
2018-01-23 08:12:01 -05:00
Arend van Spriel
3c47d19ff4 drivers: base: add coredump driver ops
This adds the coredump driver operation. When the driver defines it
a coredump file is added in the sysfs folder of the device upon
driver binding. The file is removed when the driver is unbound.
User-space can trigger a coredump for this device by echo'ing to
the coredump file.

Signed-off-by: Arend van Spriel <aspriel@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-23 09:47:05 +01:00
Ulrich Hecht
3a19cfcce1 serdev: add method to set parity
Adds serdev_device_set_parity() and an implementation for ttyport.
The interface uses an enum with the values SERIAL_PARITY_NONE,
SERIAL_PARITY_EVEN and SERIAL_PARITY_ODD.

Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Johan Hovold <johan@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-01-23 09:16:05 +01:00
Gaurav Kohli
b027e2298b tty: fix data race between tty_init_dev and flush of buf
There can be a race, if receive_buf call comes before
tty initialization completes in n_tty_open and tty->disc_data
may be NULL.

CPU0					CPU1
----					----
 000|n_tty_receive_buf_common()   	n_tty_open()
-001|n_tty_receive_buf2()		tty_ldisc_open.isra.3()
-002|tty_ldisc_receive_buf(inline)	tty_ldisc_setup()

Using ldisc semaphore lock in tty_init_dev till disc_data
initializes completely.

Signed-off-by: Gaurav Kohli <gkohli@codeaurora.org>
Reviewed-by: Alan Cox <alan@linux.intel.com>
Cc: stable <stable@vger.kernel.org>

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-01-23 08:57:37 +01:00
Eric W. Biederman
f71dd7dc2d signal/ptrace: Add force_sig_ptrace_errno_trap and use it where needed
There are so many places that build struct siginfo by hand that at
least one of them is bound to get it wrong.  A handful of cases in the
kernel arguably did just that when using the errno field of siginfo to
pass no errno values to userspace.  The usage is limited to a single
si_code so at least does not mess up anything else.

Encapsulate this questionable pattern in a helper function so
that the userspace ABI is preserved.

Update all of the places that use this pattern to use the new helper
function.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2018-01-22 19:07:11 -06:00
Eric W. Biederman
382467358a signal: Helpers for faults with specialized siginfo layouts
The helpers added are:
send_sig_mceerr
force_sig_mceerr
force_sig_bnderr
force_sig_pkuerr

Filling out siginfo properly can ge tricky.  Especially for these
specialized cases where the temptation is to share code with other
cases which use a different subset of siginfo fields.  Unfortunately
that code sharing frequently results in bugs with the wrong siginfo
fields filled in, and makes it harder to verify that the siginfo
structure was properly initialized.

Provide these helpers instead that get all of the details right, and
guarantee that siginfo is properly initialized.

send_sig_mceerr and force_sig_mceer are a little special as two si
codes BUS_MCEERR_AO and BUS_MCEER_AR both use the same extended
signinfo layout.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2018-01-22 19:07:10 -06:00
Eric W. Biederman
f8ec66014f signal: Add send_sig_fault and force_sig_fault
The vast majority of signals sent from architecture specific code are
simple faults.  Encapsulate this reality with two helper functions so
that the nit-picky implementation of preparing a siginfo does not need
to be repeated many times on each architecture.

As only some architectures support the trapno field, make the trapno
arguement only present on those architectures.

Similary as ia64 has three fields: imm, flags, and isr that
are specific to it.  Have those arguments always present on ia64
and no where else.

This ensures the architecture specific code always remembers which
fields it needs to pass into the siginfo structure.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2018-01-22 19:07:09 -06:00
Hannes Reinecke
9c661a49e4 scsi: core: Add VENDOR_SPECIFIC sense code definitions
Some older devices will return vendor specific sense codes, so we should
be adding a definition for it.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-01-22 20:04:02 -05:00
Jaegeuk Kim
f236792311 f2fs: allow to recover node blocks given updated checkpoint
If fsck.f2fs changes crc, we have no way to recover some inode blocks by roll-
forward recovery. Let's relax the condition to recover them.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-01-22 14:56:59 -08:00
Jaegeuk Kim
1ad71a2712 f2fs: add an ioctl to disable GC for specific file
This patch gives a flag to disable GC on given file, which would be useful, when
user wants to keep its block map. It also conducts in-place-update for dontmove
file.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-01-22 14:56:35 -08:00
Quentin Monnet
f9eda14f03 net: sched: create tc_can_offload_extack() wrapper
Create a wrapper around tc_can_offload() that takes an additional
extack pointer argument in order to output an error message if TC
offload is disabled on the device.

In this way, the error message is handled by the core and can be the
same for all drivers.

Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22 16:28:32 -05:00
Quentin Monnet
8f0b425a71 net: sched: add extack support for offload via tc_cls_common_offload
Add extack support for hardware offload of classifiers. In order
to achieve this, a pointer to a struct netlink_ext_ack is added to the
struct tc_cls_common_offload that is passed to the callback for setting
up the classifier. Function tc_cls_common_offload_init() is updated to
support initialization of this new attribute.

Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22 16:28:32 -05:00
David Decotigny
b2d3bcfa26 net: core: Expose number of link up/down transitions
Expose the number of times the link has been going UP or DOWN, and
update the "carrier_changes" counter to be the sum of these two events.
While at it, also update the sysfs-class-net documentation to cover:
carrier_changes (3.15), carrier_up_count (4.16) and carrier_down_count
(4.16)

Signed-off-by: David Decotigny <decot@googlers.com>
[Florian:
* rebase
* add documentation
* merge carrier_changes with up/down counters]
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22 15:42:05 -05:00
Sabrina Dubroca
e8660ded7f macsec: restore uAPI after addition of GCM-AES-256
Commit ccfdec9089 ("macsec: Add support for GCM-AES-256 cipher suite")
changed a few values in the uapi headers for MACsec.

Because of existing userspace implementations, we need to preserve the
value of MACSEC_DEFAULT_CIPHER_ID. Not doing that resulted in
wpa_supplicant segfaults when a secure channel was created using the
default cipher. Thus, swap MACSEC_DEFAULT_CIPHER_{ID,ALT} back to their
original values.

Changing the maximum length of the MACSEC_SA_ATTR_KEY attribute is
unnecessary, as the previous value (MACSEC_MAX_KEY_LEN, which was 128B)
is large enough to carry 32-bytes keys. This patch reverts
MACSEC_MAX_KEY_LEN to 128B and restores the old length check on
MACSEC_SA_ATTR_KEY.

Fixes: ccfdec9089 ("macsec: Add support for GCM-AES-256 cipher suite")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22 15:40:16 -05:00
Marcin Wojtas
3395de96ae device property: Allow iterating over available child fwnodes
Implement a new helper function fwnode_get_next_available_child_node(),
which enables obtaining next enabled child fwnode, which
works on a similar basis to OF's of_get_next_available_child().

This commit also introduces a macro, thanks to which it is
possible to iterate over the available fwnodes, using the
new function described above.

Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22 10:57:04 -05:00
Marcin Wojtas
7c6c57f2ab device property: Introduce fwnode_irq_get()
Until now there were two very similar functions allowing
to get Linux IRQ number from ACPI handle (acpi_irq_get())
and OF node (of_irq_get()). The first one appeared to be used
only as a subroutine of platform_irq_get(), which (in the generic
code) limited IRQ obtaining from _CRS method only to nodes
associated to kernel's struct platform_device.

This patch introduces a new helper routine - fwnode_irq_get(),
which allows to get the IRQ number directly from the fwnode
to be used as common for OF/ACPI worlds. It is usable not
only for the parents fwnodes, but also for the child nodes
comprising their own _CRS methods with interrupts description.

In order to be able o satisfy compilation with !CONFIG_ACPI
and also simplify the new code, introduce a helper macro
(ACPI_HANDLE_FWNODE), with which it is possible to reach
an ACPI handle directly from its fwnode.

Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22 10:57:04 -05:00
Marcin Wojtas
b28f263b86 device property: Introduce fwnode_get_phy_mode()
Until now there were two almost identical functions for
obtaining network PHY mode - of_get_phy_mode() and,
more generic, device_get_phy_mode(). However it is not uncommon,
that the network interface is represented as a child
of the actual controller, hence it is not associated
directly to any struct device, required by the latter
routine.

This commit allows for getting the PHY mode for
children nodes in the ACPI world by introducing a new function -
fwnode_get_phy_mode(). This commit also changes
device_get_phy_mode() routine to be its wrapper, in order
to prevent unnecessary duplication.

Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22 10:57:04 -05:00
Marcin Wojtas
babe2dbb28 device property: Introduce fwnode_get_mac_address()
Until now there were two almost identical functions for
obtaining MAC address - of_get_mac_address() and, more generic,
device_get_mac_address(). However it is not uncommon,
that the network interface is represented as a child
of the actual controller, hence it is not associated
directly to any struct device, required by the latter
routine.

This commit allows for getting the MAC address for
children nodes in the ACPI world by introducing a new function -
fwnode_get_mac_address(). This commit also changes
device_get_mac_address() routine to be its wrapper, in order
to prevent unnecessary duplication.

Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-01-22 10:57:04 -05:00
Anand Jain
98820a7e24 btrfs: add support for SUPER_FLAG_CHANGING_FSID
The UUID change by btrfstune sets SUPER_FLAG_CHANGING_FSID and resets it
only when changing fsid is complete. Its not a good idea to mount the
device anything in between, reading metadata blocks would fail with UUID
mismatch.

This patch doesn't add SUPER_FLAG_CHANGING_FSID into
BTRFS_SUPER_FLAG_SUPP list, so mount will fail (along with the fix in
the next patch) when SUPER_FLAG_CHANGING_FSID is set.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
[ update changelog ]
Signed-off-by: David Sterba <dsterba@suse.com>
2018-01-22 16:08:21 +01:00
Anand Jain
e2731e5588 btrfs: define SUPER_FLAG_METADUMP_V2
btrfs-progs uses super flag bit BTRFS_SUPER_FLAG_METADUMP_V2 (1ULL << 34).
So just define that in kernel so that we know its been used.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2018-01-22 16:08:21 +01:00
Anand Jain
ad8bc4d005 btrfs: put btrfs_ioctl_vol_args_v2 related defines together
Just a code spatial rearrangement, no functional change.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2018-01-22 16:08:16 +01:00
Nikolay Borisov
4a2d25cd93 btrfs: Remove redundant FLAG_VACANCY
Commit 9036c10208 ("Btrfs: update hole handling v2") added the
FLAG_VACANCY to denote holes, however there was already a consistent way
of flagging extents which represent hole - ->block_start =
EXTENT_MAP_HOLE. And also the only place where this flag is checked is
in the fiemap code, but the block_start value is also checked and every
other place in the filesystem detects holes by using block_start
value's. So remove the extra flag. This survived a full xfstest run.

Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
2018-01-22 16:08:14 +01:00
Ladislav Michl
d3452f1d88 pinctrl: Forward declare struct device
pinctrl/devinfo.h is using forward declaration from pinctrl/consumer.h
for configurations with CONFIG_PINCTRL defined, however nothing declares
it in the opposite case. Fix this by adding a forward declaration.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2018-01-22 13:31:19 +01:00
Arnd Bergmann
6ab1e867ac Few omap interconnect dts fixes for v4.16 merge window
Now that we have the dts clocks for the clkctrl clock and the
 interconnect binding, we need to update the existing ti-sysc
 users according to the binding to make it usable for drivers.
 
 Apologies for not being able to send this earlier but it took
 me few revisions to get the smartreflex changes right and
 tested with yet to be posted patches to make smartreflex probe
 with dts and I wanted to have it sit in next for a while to make
 sure we're not introducing regressions for legacy platform data
 based booting.
 
 Note that this is based on a merge with commit 20a2742e57
 ("dt-bindings: ti-sysc: Update binding for timers and capabilities")
 to avoid a merge conflict with the binding changes.
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCAAvFiEEkgNvrZJU/QSQYIcQG9Q+yVyrpXMFAlpiDqURHHRvbnlAYXRv
 bWlkZS5jb20ACgkQG9Q+yVyrpXMmOg/9Hr2lan1ZTqNBTgBixbcxj+gmovVlwjKa
 1tXtNlkTco17BjEyDmKb3dzS16zT5YXv27RrIjCukQsKvVr2HOW4EnJ6iPPP6Y97
 bp3Tx3ejqzoUNCcTUII4nWLZKaFXZ6C27sDrylEovsDJR9InocNYk5RhYDuPKPAw
 3YaG/+QuRLc98YzjPGbSzUZws4EDUJhfHBqsVBwr4UFNJblRJe65kTFeH7BkZ9F8
 eXenpUcS1JQMjMARR7aZck+7/3jyjtqWft1GjFWUto2kfx0tA8Ay4SyOqJxS9REa
 0TK/Qdik2KDqP3wgBy7FLgXakmMOWttDFB5LUsWZbSyIO9vTgZj4RimSRgctfMxx
 XbyiJKovlNq1uDIPv3z/rHOala3WifNnzpf0m9izE5kbMW7vdHVycwzmJ2/Ushz6
 rV4pqYVZ7o+SSnYRoiSdEQ/MMgMuypuL1+mhpIHL/rh+vCBGVaUfKRkrIcFwfujL
 H0nhB4PG8DEyOoc6dr8X317jUCgj0X6xTBO8jJUhT5R8tMHuKjqSSAq1QKCL7q5K
 /tvjkE4fEIs+Hr0bSkBZ+Jd/llWZrmkD7a1etJtw5WbRnPROYYRsb0PeNDFWTtOF
 nw/S4YF1F3k6BzOQobH2BjkXOCTJD1FhnfH7hmTLJ3ZReyQLafKFu2DHdje8GyFm
 XjGUuctAC24=
 =oKRR
 -----END PGP SIGNATURE-----

Merge tag 'omap-for-v4.16/dt-clk-dts-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/dt

Pull "Few omap interconnect dts fixes for v4.16 merge window" from
Tony Lindgren:

Now that we have the dts clocks for the clkctrl clock and the
interconnect binding, we need to update the existing ti-sysc
users according to the binding to make it usable for drivers.

Apologies for not being able to send this earlier but it took
me few revisions to get the smartreflex changes right and
tested with yet to be posted patches to make smartreflex probe
with dts and I wanted to have it sit in next for a while to make
sure we're not introducing regressions for legacy platform data
based booting.

Note that this is based on a merge with commit 20a2742e57
("dt-bindings: ti-sysc: Update binding for timers and capabilities")
to avoid a merge conflict with the binding changes.

* tag 'omap-for-v4.16/dt-clk-dts-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: dts: Update ti-sysc data for existing users
  ARM: dts: Fix smartreflex compatible for omap3 shared mpu-iva instance
  dt-bindings: ti-sysc: Update binding for timers and capabilities
2018-01-22 12:36:57 +01:00