Add a driver for RAVE Supervisory Processor, an MCU implementing
various bits of housekeeping functionality (watchdoging, backlight
control, LED control, etc) on RAVE family of products by Zodiac
Inflight Innovations.
This driver implementes core MFD/serdev device as well as
communication subroutines necessary for commanding the device.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Acked-by: Philippe Ombredanne <pombredanne@nexb.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Tested-by: Chris Healy <cphealy@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Daniel Borkmann says:
====================
pull-request: bpf-next 2018-01-07
The following pull-request contains BPF updates for your *net-next* tree.
The main changes are:
1) Add a start of a framework for extending struct xdp_buff without
having the overhead of populating every data at runtime. Idea
is to have a new per-queue struct xdp_rxq_info that holds read
mostly data (currently that is, queue number and a pointer to
the corresponding netdev) which is set up during rxqueue config
time. When a XDP program is invoked, struct xdp_buff holds a
pointer to struct xdp_rxq_info that the BPF program can then
walk. The user facing BPF program that uses struct xdp_md for
context can use these members directly, and the verifier rewrites
context access transparently by walking the xdp_rxq_info and
net_device pointers to load the data, from Jesper.
2) Redo the reporting of offload device information to user space
such that it works in combination with network namespaces. The
latter is reported through a device/inode tuple as similarly
done in other subsystems as well (e.g. perf) in order to identify
the namespace. For this to work, ns_get_path() has been generalized
such that the namespace can be retrieved not only from a specific
task (perf case), but also from a callback where we deduce the
netns (ns_common) from a netdevice. bpftool support using the new
uapi info and extensive test cases for test_offload.py in BPF
selftests have been added as well, from Jakub.
3) Add two bpftool improvements: i) properly report the bpftool
version such that it corresponds to the version from the kernel
source tree. So pick the right linux/version.h from the source
tree instead of the installed one. ii) fix bpftool and also
bpf_jit_disasm build with bintutils >= 2.9. The reason for the
build breakage is that binutils library changed the function
signature to select the disassembler. Given this is needed in
multiple tools, add a proper feature detection to the
tools/build/features infrastructure, from Roman.
4) Implement the BPF syscall command BPF_MAP_GET_NEXT_KEY for the
stacktrace map. It is currently unimplemented, but there are
use cases where user space needs to walk all stacktrace map
entries e.g. for dumping or deleting map entries w/o having to
close and recreate the map. Add BPF selftests along with it,
from Yonghong.
5) Few follow-up cleanups for the bpftool cgroup code: i) rename
the cgroup 'list' command into 'show' as we have it for other
subcommands as well, ii) then alias the 'show' command such that
'list' is accepted which is also common practice in iproute2,
and iii) remove couple of newlines from error messages using
p_err(), from Jakub.
6) Two follow-up cleanups to sockmap code: i) remove the unused
bpf_compute_data_end_sk_skb() function and ii) only build the
sockmap infrastructure when CONFIG_INET is enabled since it's
only aware of TCP sockets at this time, from John.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ext4 needs to pass through error from its iomap handler to the page
fault handler so that it can properly detect ENOSPC and force
transaction commit and retry the fault (and block allocation). Add
argument to dax_iomap_fault() for passing such error.
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
similar to memdup_user(), but does *not* guarantee that result will
be physically contiguous; use only in cases where that's not a requirement
and free it with kvfree().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Pull vfs fixes from Al Viro:
- untangle sys_close() abuses in xt_bpf
- deal with register_shrinker() failures in sget()
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fix "netfilter: xt_bpf: Fix XT_BPF_MODE_FD_PINNED mode of 'xt_bpf_info_v1'"
sget(): handle failures of register_shrinker()
mm,vmscan: Make unregister_shrinker() no-op if register_shrinker() failed.
eventfd_ctx_get() is not used outside of eventfd.c, so unexport it and
fold it into eventfd_ctx_fileget().
(eventfd_ctx_get() was apparently added years ago for KVM irqfd's, but
was never used.)
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
eventfd_ctx_read() is not used outside of eventfd.c, so unexport it and
fold it into eventfd_read(). This slightly simplifies the code and
makes it more analogous to eventfd_write().
(eventfd_ctx_read() was apparently added years ago for KVM irqfd's, but
was never used.)
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Nothing actually calls eventfd_file_create() besides the eventfd2()
system call itself. So simplify things by folding it into the system
call and using anon_inode_getfd() instead of anon_inode_getfile(). This
removes over 40 lines with no change in functionality.
(eventfd_file_create() was apparently added years ago for KVM irqfd's,
but was never used.)
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Many kernel drivers contain code that allocates and frees both a
scatterlist and the pages that populate that scatterlist.
Introduce functions in lib/scatterlist.c that perform these tasks
instead of duplicating this functionality in multiple drivers.
Only include these functions in the build if CONFIG_SGL_ALLOC=y
to avoid that the kernel size increases if this functionality is
not used.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
bcache is the only user of bio_alloc_pages(), so move this function into
bcache, and avoid it being misused in the future.
Also rename it to bch_bio_allo_pages() since it is bcache only.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Firstly this patch introduces BVEC_ITER_ALL_INIT for iterating one bio
from start to end.
As we need to support multipage bvecs, don't access bio->bi_io_vec
in copy_to_high_bio_irq(), and just use the standard iterator for that.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The following helpers are introduced for converting current users of
direct access to bvec table, and prepares for supporting multipage bvec:
bio_pages_all()
bio_first_bvec_all()
bio_first_page_all()
bio_last_bvec_all()
All are named as bio_*_all() to following bio_for_each_segment_all(),
they can only be used on bio of !bio_flagged(bio, BIO_CLONED), that means
the whole bvec table is covered.
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
There's currently nothing forcing alignment of einfo->addr and
einfo->len on mtd->erasesize. Since we don't know if automatically
aligning those field in mtd_erase() will hurt some drivers, we add an
helper function to let drivers that need such an alignment explicitly
ask for it.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reviewed-by: Miquel Raynal <miquel.raynal@free-electrons.com>
Hook points for xdp_rxq_info:
* reg : netif_alloc_rx_queues
* unreg: netif_free_rx_queues
The net_device have some members (num_rx_queues + real_num_rx_queues)
and data-area (dev->_rx with struct netdev_rx_queue's) that were
primarily used for exporting information about RPS (CONFIG_RPS) queues
to sysfs (CONFIG_SYSFS).
For generic XDP extend struct netdev_rx_queue with the xdp_rxq_info,
and remove some of the CONFIG_SYSFS ifdefs.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This patch only introduce the core data structures and API functions.
All XDP enabled drivers must use the API before this info can used.
There is a need for XDP to know more about the RX-queue a given XDP
frames have arrived on. For both the XDP bpf-prog and kernel side.
Instead of extending xdp_buff each time new info is needed, the patch
creates a separate read-mostly struct xdp_rxq_info, that contains this
info. We stress this data/cache-line is for read-only info. This is
NOT for dynamic per packet info, use the data_meta for such use-cases.
The performance advantage is this info can be setup at RX-ring init
time, instead of updating N-members in xdp_buff. A possible (driver
level) micro optimization is that xdp_buff->rxq assignment could be
done once per XDP/NAPI loop. The extra pointer deref only happens for
program needing access to this info (thus, no slowdown to existing
use-cases).
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Pull EFI updates from Thomas Gleixner:
- A fix for a add_efi_memmap parameter regression which ensures that
the parameter is parsed before it is used.
- Reinstate the virtual capsule mapping as the cached copy turned out
to break Quark and other things
- Remove Matt Fleming as EFI co-maintainer. He stepped back a few days
ago. Thanks Matt for all your great work!
* 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
MAINTAINERS: Remove Matt Fleming as EFI co-maintainer
efi/capsule-loader: Reinstate virtual capsule mapping
x86/efi: Fix kernel param add_efi_memmap regression
If OF_FLATTREE=y, but OF_EARLY_FLATTREE=n:
drivers/tty/serial/earlycon.o: In function `param_setup_earlycon':
earlycon.c:(.init.text+0x3a4): undefined reference to `early_init_dt_scan_chosen_stdout'
Fix this by moving the early flattree forward declarations and dummy
implementations inside an #ifdef CONFIG_OF_EARLY_FLATTREE block.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
Renesas SH7757 has 2 Fast and 2 Gigabit Ether controllers, while the
'sh_eth' driver can only reset and initialize TSU of the first controller
pair. Shimoda-san tried to solve that adding the 'needs_init' member to the
'struct sh_eth_plat_data', however the platform code still never sets this
flag. I think that we can infer this information from the 'devno' variable
(set to 'platform_device::id') and reset/init the Ether controller pair
only for an even 'devno'; therefore 'sh_eth_plat_data::needs_init' can be
removed...
Fixes: 150647fb2c ("net: sh_eth: change the condition of initialization")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Similar to vfs_create(), but with caller-supplied callback (and
argument for it) to be used instead of ->create().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Descriptor table is a shared object; it's not a place where you can
stick temporary references to files, especially when we don't need
an opened file at all.
Cc: stable@vger.kernel.org # v4.14
Fixes: 98589a0998 ("netfilter: xt_bpf: Fix XT_BPF_MODE_FD_PINNED mode of 'xt_bpf_info_v1'")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Components relying only on the request_queue structure for accessing
block devices (e.g. I/O schedulers) have a limited knowledged of the
device characteristics. In particular, the device capacity cannot be
easily discovered, which for a zoned block device also result in the
inability to easily know the number of zones of the device (the zone
size is indicated by the chunk_sectors field of the queue limits).
Introduce the nr_zones field to the request_queue structure to simplify
access to this information. Also, add the bitmap seq_zone_bitmap which
indicates which zones of the device are sequential zones (write
preferred or write required) and the bitmap seq_zones_wlock which
indicates if a zone is write locked, that is, if a write request
targeting a zone was dispatched to the device. These fields are
initialized by the low level block device driver (sd.c for ZBC/ZAC
disks). They are not initialized by stacking drivers (device mappers)
handling zoned block devices (e.g. dm-linear).
Using this, I/O schedulers can introduce zone write locking to control
request dispatching to a zoned block device and avoid write request
reordering by limiting to at most a single write request per zone
outside of the scheduler at any time.
Based on previous patches from Damien Le Moal.
Signed-off-by: Christoph Hellwig <hch@lst.de>
[Damien]
* Fixed comments and identation in blkdev.h
* Changed helper functions
* Fixed this commit message
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Allow to set the over-provision percentage on target creation. In case
that the value is not provided, fall back to the default value set by
the target.
In pblk, set the default OP to 11% of the total size of the device
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Hans Holmberg <hans.holmberg@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Prepare for the 2.0 revision by adapting the geometry
structures to coexist with the 1.2 revision.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The lower page table is unused. All page tables reported by 1.2
devices are all reporting a sequential 1:1 page mapping. This is
also not used going forward with the 2.0 revision.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Reviewed-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Remove the wait filed in nvm_rq. It is not used anymore, as targets rely
on the functionality provided by the LightNVM subsystem when sending
sync I/O.
Signed-off-by: Javier González <javier@cnexlabs.com>
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Now that rrpc have been removed. Also remove the hybrid 1.2 support
from the core.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Now that rrpc has been removed, the only users of the ppa helpers
is pblk. However, pblk already defines similar functions.
Switch pblk to use the internal ones, and remove the generic ppa
helpers.
Signed-off-by: Matias Bjørling <m@bjorling.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Pull "Reset controller changes for v4.16" from Philipp Zabel:
This adds Meson-AXG reset support and fixes a few issues with the reset
include header: device_reset_optional is fixed to be really optional,
unused headers are pruned, and useless warnings and deprecated API calls
are removed.
* tag 'reset-for-4.16' of git://git.pengutronix.de/git/pza/linux:
reset: meson-axg: add compatible string for Meson-AXG SoC
dt-bindings: reset: Add bindings for the Meson-AXG SoC Reset Controller
reset: remove reset_control_get(_optional)
reset: minimize the number of headers included from <linux/reset.h>
reset: remove remaining WARN_ON() in <linux/reset.h>
reset: make device_reset_optional() really optional
Reference counters should use refcount_t rather than atomic_t, since the
refcount_t implementation can prevent overflows, reducing the
exploitability of reference leak bugs. crypto_alg.cra_refcount is a
reference counter with the usual semantics, so switch it over to
refcount_t.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This is the pxa changes for v4.16 cycle.
It is :
- the conversion to the new parser sharpslpart parser
for the Sharp variants
- an I2C platform data cleanup for PXA
- a gpioreg switch of one register for lubbock
* tag 'pxa-for-4.16' of https://github.com/rjarzmik/linux:
ARM: pxa/lubbock: add GPIO driver for LUB_MISC_WR register
ARM: pxa/poodle: Remove hardcoded partitioning, use sharpslpart parser
ARM: pxa/spitz: Remove hardcoded partitioning, use sharpslpart parser
ARM: pxa/tosa: Remove hardcoded partitioning, use sharpslpart parser
ARM: pxa/corgi: Remove hardcoded partitioning, use sharpslpart parser
ARM: pxa: move header file out of I2C realm
ARM: pxa: move declarations to proper place
Signed-off-by: Olof Johansson <olof@lixom.net>
TI sysc driver updates for v4.16 merge window
We now have gotten ti-sysc driver to the point where it can parse
interconnect target configuration from device tree instead of the
legacy platform data. This series updates the device tree binding
and adds parsing to the driver for quirks and capabilities.
* tag 'omap-for-v4.16/ti-sysc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
bus: ti-sysc: Add parsing of module capabilities
bus: ti-sysc: Handle module quirks based dts configuration
bus: ti-sysc: Detect i2c interconnect target module based on register layout
bus: ti-sysc: Add register bits for interconnect target modules
bus: ti-sysc: Make omap_hwmod_sysc_fields into sysc_regbits platform data
ARM: OMAP2+: Move all omap_hwmod_sysc_fields to omap_hwmod_common_data.c
ARM: dts: Add generic ti,sysc compatible in addition to the custom ones
dt-bindings: ti-sysc: Update binding for timers and capabilities
Signed-off-by: Olof Johansson <olof@lixom.net>
This pull request contains Broadcom ARM/ARM64 based SoCs drivers changes for
4.16, please pull the following:
- Arnd provides an update to the Raspberry Pi firmware interface and uses time64_t to
print the time to make it more future proof
- Florian provides a set of updates to make the Broadcom STB Bus Interface Unit code
work on newer ARM64-based chips, as well as perform the correct interface tuning
for these chips to reach the expected performance
* tag 'arm-soc/for-4.16/drivers' of http://github.com/Broadcom/stblinux:
soc: brcmstb: biuctrl: Move to early_initcall
soc: brcmstb: Split initialization
soc: brcmstb: biuctrl: Fine tune B53 MCP interface settings
soc: brcmstb: biuctrl: Wire-up new registers
soc: brcmstb: biuctrl: Prepare for saving/restoring other registers
soc: brcmstb: Correct CPU_CREDIT_REG offset for Brahma-B53 CPUs
soc: brcmstb: Make CPU credit offset more parameterized
dt-bindings: arm: brcmstb: Correct BIUCTRL node documentation
dt-bindings: arm: Add entry for Broadcom Brahma-B53
firmware: raspberrypi: print time using time64_t
Signed-off-by: Olof Johansson <olof@lixom.net>
We can move these APIs into the private header file now that we
don't have any users of the __clk_get() and __clk_put() APIs
outside of clkdev.c and clk.c.
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
chip->phy_addr_sel_strap is declared as a bool, but is also used as an
integer address base.
Rename 'phy_addr_sel_strap' to 'phy_addr_base', and change type to int.
Signed-off-by: Egil Hjelmeland <privat@egil-hjelmeland.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
The sockmap infrastructure is only aware of TCP sockets at the
moment. In the future we plan to add UDP. In both cases CONFIG_NET
should be built-in.
So lets only build sockmap if CONFIG_INET is enabled.
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Since arm64 also has __raw I/O accessors, add __aarch64__ in fb.h.
This is a supplement for commmit 981409b25e ("fbdev: arm has __raw
I/O accessors, use them in fb.h").
Signed-off-by: Ji Zhang <ji.zhang@mediatek.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
"AT24 updates for 4.16 merge window
The driver has been converted to using regmap instead of raw i2c and
smbus calls which shrank the code significantly.
Device tree binding document has been cleaned up. Device tree support in
the driver has been improved and we now support all at24 models as well
as two new DT properties (no-read-rollover and wp-gpios).
We no longer user unreadable magic values for driver data as the way it
was implemented caused problems for some EEPROM models - we switched to
regular structs.
Aside from that, there's a bunch of coding style fixes and minor
improvements all over the place."
Add a set of paged phy register accessors which are inherently safe in
their design against other accesses interfering with the paged access.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add unlocked versions of the bus accessors, which allows access to the
bus with all the tracing. These accessors validate that the bus mutex
is held, which is a basic requirement for all mii bus accesses.
Also added is a read-modify-write unlocked accessor with the same
locking requirements.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Add unlocked versions of the bus accessors, which allows access to the
bus with all the tracing. These accessors validate that the bus mutex
is held, which is a basic requirement for all mii bus accesses.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
mvneta is the only user of fixed_phy_update_state(), which has been
converted to use phylink instead. Remove fixed_phy_update_state().
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Pull RCU updates from Paul E. McKenney:
- Updates to use cond_resched() instead of cond_resched_rcu_qs()
where feasible (currently everywhere except in kernel/rcu and
in kernel/torture.c). Also a couple of fixes to avoid sending
IPIs to offline CPUs.
- Updates to simplify RCU's dyntick-idle handling.
- Updates to remove almost all uses of smp_read_barrier_depends()
and read_barrier_depends().
- Miscellaneous fixes.
- Torture-test updates.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
