Pull networking updates from David Miller:
1) Unified UDP encapsulation offload methods for drivers, from
Alexander Duyck.
2) Make DSA binding more sane, from Andrew Lunn.
3) Support QCA9888 chips in ath10k, from Anilkumar Kolli.
4) Several workqueue usage cleanups, from Bhaktipriya Shridhar.
5) Add XDP (eXpress Data Path), essentially running BPF programs on RX
packets as soon as the device sees them, with the option to mirror
the packet on TX via the same interface. From Brenden Blanco and
others.
6) Allow qdisc/class stats dumps to run lockless, from Eric Dumazet.
7) Add VLAN support to b53 and bcm_sf2, from Florian Fainelli.
8) Simplify netlink conntrack entry layout, from Florian Westphal.
9) Add ipv4 forwarding support to mlxsw spectrum driver, from Ido
Schimmel, Yotam Gigi, and Jiri Pirko.
10) Add SKB array infrastructure and convert tun and macvtap over to it.
From Michael S Tsirkin and Jason Wang.
11) Support qdisc packet injection in pktgen, from John Fastabend.
12) Add neighbour monitoring framework to TIPC, from Jon Paul Maloy.
13) Add NV congestion control support to TCP, from Lawrence Brakmo.
14) Add GSO support to SCTP, from Marcelo Ricardo Leitner.
15) Allow GRO and RPS to function on macsec devices, from Paolo Abeni.
16) Support MPLS over IPV4, from Simon Horman.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1622 commits)
xgene: Fix build warning with ACPI disabled.
be2net: perform temperature query in adapter regardless of its interface state
l2tp: Correctly return -EBADF from pppol2tp_getname.
net/mlx5_core/health: Remove deprecated create_singlethread_workqueue
net: ipmr/ip6mr: update lastuse on entry change
macsec: ensure rx_sa is set when validation is disabled
tipc: dump monitor attributes
tipc: add a function to get the bearer name
tipc: get monitor threshold for the cluster
tipc: make cluster size threshold for monitoring configurable
tipc: introduce constants for tipc address validation
net: neigh: disallow transition to NUD_STALE if lladdr is unchanged in neigh_update()
MAINTAINERS: xgene: Add driver and documentation path
Documentation: dtb: xgene: Add MDIO node
dtb: xgene: Add MDIO node
drivers: net: xgene: ethtool: Use phy_ethtool_gset and sset
drivers: net: xgene: Use exported functions
drivers: net: xgene: Enable MDIO driver
drivers: net: xgene: Add backward compatibility
drivers: net: phy: xgene: Add MDIO driver
...
Pull block driver updates from Jens Axboe:
"This branch also contains core changes. I've come to the conclusion
that from 4.9 and forward, I'll be doing just a single branch. We
often have dependencies between core and drivers, and it's hard to
always split them up appropriately without pulling core into drivers
when that happens.
That said, this contains:
- separate secure erase type for the core block layer, from
Christoph.
- set of discard fixes, from Christoph.
- bio shrinking fixes from Christoph, as a followup up to the
op/flags change in the core branch.
- map and append request fixes from Christoph.
- NVMeF (NVMe over Fabrics) code from Christoph. This is pretty
exciting!
- nvme-loop fixes from Arnd.
- removal of ->driverfs_dev from Dan, after providing a
device_add_disk() helper.
- bcache fixes from Bhaktipriya and Yijing.
- cdrom subchannel read fix from Vchannaiah.
- set of lightnvm updates from Wenwei, Matias, Johannes, and Javier.
- set of drbd updates and fixes from Fabian, Lars, and Philipp.
- mg_disk error path fix from Bart.
- user notification for failed device add for loop, from Minfei.
- NVMe in general:
+ NVMe delay quirk from Guilherme.
+ SR-IOV support and command retry limits from Keith.
+ fix for memory-less NUMA node from Masayoshi.
+ use UINT_MAX for discard sectors, from Minfei.
+ cancel IO fixes from Ming.
+ don't allocate unused major, from Neil.
+ error code fixup from Dan.
+ use constants for PSDT/FUSE from James.
+ variable init fix from Jay.
+ fabrics fixes from Ming, Sagi, and Wei.
+ various fixes"
* 'for-4.8/drivers' of git://git.kernel.dk/linux-block: (115 commits)
nvme/pci: Provide SR-IOV support
nvme: initialize variable before logical OR'ing it
block: unexport various bio mapping helpers
scsi/osd: open code blk_make_request
target: stop using blk_make_request
block: simplify and export blk_rq_append_bio
block: ensure bios return from blk_get_request are properly initialized
virtio_blk: use blk_rq_map_kern
memstick: don't allow REQ_TYPE_BLOCK_PC requests
block: shrink bio size again
block: simplify and cleanup bvec pool handling
block: get rid of bio_rw and READA
block: don't ignore -EOPNOTSUPP blkdev_issue_write_same
block: introduce BLKDEV_DISCARD_ZERO to fix zeroout
NVMe: don't allocate unused nvme_major
nvme: avoid crashes when node 0 is memoryless node.
nvme: Limit command retries
loop: Make user notify for adding loop device failed
nvme-loop: fix nvme-loop Kconfig dependencies
nvmet: fix return value check in nvmet_subsys_alloc()
...
Pull core block updates from Jens Axboe:
- the big change is the cleanup from Mike Christie, cleaning up our
uses of command types and modified flags. This is what will throw
some merge conflicts
- regression fix for the above for btrfs, from Vincent
- following up to the above, better packing of struct request from
Christoph
- a 2038 fix for blktrace from Arnd
- a few trivial/spelling fixes from Bart Van Assche
- a front merge check fix from Damien, which could cause issues on
SMR drives
- Atari partition fix from Gabriel
- convert cfq to highres timers, since jiffies isn't granular enough
for some devices these days. From Jan and Jeff
- CFQ priority boost fix idle classes, from me
- cleanup series from Ming, improving our bio/bvec iteration
- a direct issue fix for blk-mq from Omar
- fix for plug merging not involving the IO scheduler, like we do for
other types of merges. From Tahsin
- expose DAX type internally and through sysfs. From Toshi and Yigal
* 'for-4.8/core' of git://git.kernel.dk/linux-block: (76 commits)
block: Fix front merge check
block: do not merge requests without consulting with io scheduler
block: Fix spelling in a source code comment
block: expose QUEUE_FLAG_DAX in sysfs
block: add QUEUE_FLAG_DAX for devices to advertise their DAX support
Btrfs: fix comparison in __btrfs_map_block()
block: atari: Return early for unsupported sector size
Doc: block: Fix a typo in queue-sysfs.txt
cfq-iosched: Charge at least 1 jiffie instead of 1 ns
cfq-iosched: Fix regression in bonnie++ rewrite performance
cfq-iosched: Convert slice_resid from u64 to s64
block: Convert fifo_time from ulong to u64
blktrace: avoid using timespec
block/blk-cgroup.c: Declare local symbols static
block/bio-integrity.c: Add #include "blk.h"
block/partition-generic.c: Remove a set-but-not-used variable
block: bio: kill BIO_MAX_SIZE
cfq-iosched: temporarily boost queue priority for idle classes
block: drbd: avoid to use BIO_MAX_SIZE
block: bio: remove BIO_MAX_SECTORS
...
Major changes:
wl18xx
* add initial mesh support
bcma
* serial flash support on non-MIPS SoCs
ath10k
* enable support for QCA9888
* disable wake_tx_queue() mac80211 op for older devices to workaround
throughput regression
ath9k
* implement temperature compensation support for AR9003+
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iQEcBAABAgAGBQJXkilmAAoJEG4XJFUm622bWa0H/140nogmko+U1QXTSzVcNeJM
dNPwYvkrDu5PPjWL0PekUXT8WVPk6P/SD7Sa93822BQFyR1i5QEWnXX7NMMw8WwW
f7uhCdACHoVwIktVj+CTWmat9viknyed2/B9Qbi07tfuhDMKdfi76wHf4frPW5yP
wygslKYgyV2Af/18puEcfLeBHDYI61AA1NEO69uPIx5WdT/71YrlwssnH8/xtSlV
YElYyApxv7GUVx6Irj6d/YyilvElDbzQlZSLW5zfO2664LW63MGpCY5cnP7K5Nfo
pGNVj1f3FpYK8ZncHAlNUH8bJj9snNn7RFYSo//6QAoWv7t4M2T7AbdYhNHK/ko=
=a9OQ
-----END PGP SIGNATURE-----
Merge tag 'wireless-drivers-next-for-davem-2016-07-22' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next
Kalle Valo says:
====================
pull-request: wireless-drivers-next 2016-07-22
I'm sick so I have to keep this short, but here's the last pull request
to net-next. This time there's a trivial conflict with mtd tree:
http://lkml.kernel.org/g/20160720123133.44dab209@canb.auug.org.au
We concluded with Brian (CCed) that it's best that we ask Linus to fix
this. The patches have been in linux-next for a couple of days. This
time I haven't done any merge tests so I don't know if there are any
other conflicts etc.
Please let me know if there are any problems.
wireless-drivers-next patches for 4.8
Major changes:
wl18xx
* add initial mesh support
bcma
* serial flash support on non-MIPS SoCs
ath10k
* enable support for QCA9888
* disable wake_tx_queue() mac80211 op for older devices to workaround
throughput regression
ath9k
* implement temperature compensation support for AR9003+
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
We dropped strict MIPS dependency for bcm47xxsflash driver in:
commit 5651d6aaf4 ("mtd: bcm47xxsflash: use ioremap_cache() instead of
KSEG0ADDR()") but using ioremap_cache still limits building it to few
selected architectures only.
A recent commit 57d8f7dd21 ("bcma: allow enabling serial flash support
on non-MIPS SoCs") automatically dropped MIPS dependency for
MTD_BCM47XXSFLASH which broke building e.g. on powerpc and cris.
The bcma change is alright as it doesn't break building bcma code in any
way. MTD_BCM47XXSFLASH on the other hand should be limited to archs
which need it and can build it (by providing ioremap_cache).
Fixes: 57d8f7dd21 ("bcma: allow enabling serial flash support on non-MIPS SoCs")
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: Brian Norris <computersforpeace@gmail.com>
Acked-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
One regression in the Device Tree handling for OMAP NAND handling of the ELM
node. TI migrated to using the property name "ti,elm-id", but forgot to keep
compatibility with the old "elm_id" property.
Also, might as well send out this MAINTAINERS fixup now.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=tSga
-----END PGP SIGNATURE-----
Merge tag 'for-linus-20160715' of git://git.infradead.org/linux-mtd
Pull MTD fix from Brian Norris:
"Late MTD fix for v4.7:
One regression in the Device Tree handling for OMAP NAND handling of
the ELM node. TI migrated to using the property name "ti,elm-id", but
forgot to keep compatibility with the old "elm_id" property.
Also, might as well send out this MAINTAINERS fixup now"
* tag 'for-linus-20160715' of git://git.infradead.org/linux-mtd:
mtd: nand: omap2: Add check for old elm binding
MAINTAINERS: Add file patterns for mtd device tree bindings
commit c9711ec525 ("mtd: nand: omap: Clean up device tree support")
removes the check for the old elm phandle binding.
Add it again to keep backward compatibility.
Fixes: commit c9711ec525 ("mtd: nand: omap: Clean up device tree support")
Signed-off-by: Teresa Remmet <t.remmet@phytec.de>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
For block drivers that specify a parent device, convert them to use
device_add_disk().
This conversion was done with the following semantic patch:
@@
struct gendisk *disk;
expression E;
@@
- disk->driverfs_dev = E;
...
- add_disk(disk);
+ device_add_disk(E, disk);
@@
struct gendisk *disk;
expression E1, E2;
@@
- disk->driverfs_dev = E1;
...
E2 = disk;
...
- add_disk(E2);
+ device_add_disk(E1, E2);
...plus some manual fixups for a few missed conversions.
Cc: Jens Axboe <axboe@fb.com>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
recover_peb() was never power cut aware,
if a power cut happened right after writing the VID header
upon next attach UBI would blindly use the new partial written
PEB and all data from the old PEB is lost.
In order to make recover_peb() power cut aware, write the new
VID with a proper crc and copy_flag set such that the UBI attach
process will detect whether the new PEB is completely written
or not.
We cannot directly use ubi_eba_atomic_leb_change() since we'd
have to unlock the LEB which is facing a write error.
Cc: stable@vger.kernel.org
Reported-by: Jörg Pfähler <pfaehler@isse.de>
Reviewed-by: Jörg Pfähler <pfaehler@isse.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
Directly accessing inode fields bypasses ->getattr()
and can cause problems when the underlying filesystem
does not have the default ->getattr() implementation.
So instead of obtaining the backing inode via d_backing_inode()
use vfs_getattr() and obtain what we need from the kstat struct.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
This reverts commit 87f15d4add.
vfs_stat() can only be used on user supplied buffers.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
This reverts commit 322ea0bbf3.
vfs_stat() can only be used on user supplied buffers.
UBI's kapi.c is the API to the kernel and therefore vfs_stat()
is inappropriate.
This solves the problem that mounting any UBIFS will immediately
fail with -EINVAL.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
This adds a REQ_OP_FLUSH operation that is sent to request_fn
based drivers by the block layer's flush code, instead of
sending requests with the request->cmd_flags REQ_FLUSH bit set.
Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
The req operation REQ_OP is separated from the rq_flag_bits
definition. This converts the block layer drivers to
use req_op to get the op from the request struct.
Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
improvements of UBI and UBIFS.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=L16y
-----END PGP SIGNATURE-----
Merge tag 'upstream-4.7-rc1' of git://git.infradead.org/linux-ubifs
Pull UBI/UBIFS updates from Richard Weinberger:
"This contains mostly cleanups and minor improvements of UBI and UBIFS"
* tag 'upstream-4.7-rc1' of git://git.infradead.org/linux-ubifs:
ubifs: ubifs_dump_inode: Fix dumping field bulk_read
UBI: Fix static volume checks when Fastmap is used
UBI: Set free_count to zero before walking through erase list
UBI: Silence an unintialized variable warning
UBI: Clean up return in ubi_remove_volume()
UBI: Modify wrong comment in ubi_leb_map function.
UBI: Don't read back all data in ubi_eba_copy_leb()
UBI: Add ro-mode sysfs attribute
We've already noticed a few flaws in the MTD work for v4.7-rc1:
* The Atmel folks got ahead of themselves on trying to support their latest
hardware and were working off incorrect documentation. Fix up the NAND
driver to get this correct.
* Fix up device tree example documentation to use the latest recommendations
for describing NAND ECC algorithms.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=kb+w
-----END PGP SIGNATURE-----
Merge tag 'for-linus-20160527' of git://git.infradead.org/linux-mtd
Pull MTD fixes from Brian Norris:
"We've already noticed a few flaws in the MTD work for v4.7-rc1:
- The Atmel folks got ahead of themselves on trying to support their
latest hardware and were working off incorrect documentation. Fix
up the NAND driver to get this correct.
- Fix up device tree example documentation to use the latest
recommendations for describing NAND ECC algorithms"
* tag 'for-linus-20160527' of git://git.infradead.org/linux-mtd:
Documentation: dt: mtd: drop "soft_bch" from example
Revert "mtd: atmel_nand: Support variable RB_EDGE interrupts"
This reverts commit 5ddc7bd43c ("mtd: atmel_nand: Support variable
RB_EDGE interrupts")
Because for current SoCs, the RB_EDGE3(i.e. bit 27) of HSMC_SR
register does not exist, the RB_EDGE0 (i.e. bit 24) is the ready/busy
line edge status bit. It is a datasheet bug.
Cc: <stable@vger.kernel.org>
Fixes: commit 5ddc7bd43c ("mtd: atmel_nand: Support variable RB_EDGE interrupts")
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
First cycle with Boris as NAND maintainer! Many (most) bullets stolen from him.
Generic:
* Migrated NAND LED trigger to be a generic MTD trigger
NAND:
* Introduction of the "ECC algorithm" concept, to avoid overloading the ECC
mode field too much more
* Replaced the nand_ecclayout infrastructure with something a little more
flexible (finally!) and future proof
* Rework of the OMAP GPMC and NAND drivers; the TI folks pulled some of
this into their own tree as well
* Prepare the sunxi NAND driver to receive DMA support
* Handle bitflips in erased pages on GPMI revisions that do not support
this in hardware.
SPI NOR:
* Start using the spi_flash_read() API for SPI drivers that support it (i.e.,
SPI drivers with special memory-mapped flash modes)
And other small scattered improvments.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=J6KN
-----END PGP SIGNATURE-----
Merge tag 'for-linus-20160523' of git://git.infradead.org/linux-mtd
Pull MTD updates from Brian Norris:
"First cycle with Boris as NAND maintainer! Many (most) bullets stolen
from him.
Generic:
- Migrated NAND LED trigger to be a generic MTD trigger
NAND:
- Introduction of the "ECC algorithm" concept, to avoid overloading
the ECC mode field too much more
- Replaced the nand_ecclayout infrastructure with something a little
more flexible (finally!) and future proof
- Rework of the OMAP GPMC and NAND drivers; the TI folks pulled some
of this into their own tree as well
- Prepare the sunxi NAND driver to receive DMA support
- Handle bitflips in erased pages on GPMI revisions that do not
support this in hardware.
SPI NOR:
- Start using the spi_flash_read() API for SPI drivers that support
it (i.e., SPI drivers with special memory-mapped flash modes)
And other small scattered improvments"
* tag 'for-linus-20160523' of git://git.infradead.org/linux-mtd: (155 commits)
mtd: spi-nor: support GigaDevice gd25lq64c
mtd: nand_bch: fix spelling of "probably"
mtd: brcmnand: respect ECC algorithm set by NAND subsystem
gpmi-nand: Handle ECC Errors in erased pages
Documentation: devicetree: deprecate "soft_bch" nand-ecc-mode value
mtd: nand: add support for "nand-ecc-algo" DT property
mtd: mtd: drop NAND_ECC_SOFT_BCH enum value
mtd: drop support for NAND_ECC_SOFT_BCH as "soft_bch" mapping
mtd: nand: read ECC algorithm from the new field
mtd: nand: fsmc: validate ECC setup by checking algorithm directly
mtd: nand: set ECC algorithm to Hamming on fallback
staging: mt29f_spinand: set ECC algorithm explicitly
CRIS v32: nand: set ECC algorithm explicitly
mtd: nand: atmel: set ECC algorithm explicitly
mtd: nand: davinci: set ECC algorithm explicitly
mtd: nand: bf5xx: set ECC algorithm explicitly
mtd: nand: omap2: Fix high memory dma prefetch transfer
mtd: nand: omap2: Start dma request before enabling prefetch
mtd: nandsim: add __init attribute
mtd: nand: move of_get_nand_xxx() helpers into nand_base.c
...
Ezequiel reported that he's facing UBI going into read-only
mode after power cut. It turned out that this behavior happens
only when updating a static volume is interrupted and Fastmap is
used.
A possible trace can look like:
ubi0 warning: ubi_io_read_vid_hdr [ubi]: no VID header found at PEB 2323, only 0xFF bytes
ubi0 warning: ubi_eba_read_leb [ubi]: switch to read-only mode
CPU: 0 PID: 833 Comm: ubiupdatevol Not tainted 4.6.0-rc2-ARCH #4
Hardware name: SAMSUNG ELECTRONICS CO., LTD. 300E4C/300E5C/300E7C/NP300E5C-AD8AR, BIOS P04RAP 10/15/2012
0000000000000286 00000000eba949bd ffff8800c45a7b38 ffffffff8140d841
ffff8801964be000 ffff88018eaa4800 ffff8800c45a7bb8 ffffffffa003abf6
ffffffff850e2ac0 8000000000000163 ffff8801850e2ac0 ffff8801850e2ac0
Call Trace:
[<ffffffff8140d841>] dump_stack+0x63/0x82
[<ffffffffa003abf6>] ubi_eba_read_leb+0x486/0x4a0 [ubi]
[<ffffffffa00453b3>] ubi_check_volume+0x83/0xf0 [ubi]
[<ffffffffa0039d97>] ubi_open_volume+0x177/0x350 [ubi]
[<ffffffffa00375d8>] vol_cdev_open+0x58/0xb0 [ubi]
[<ffffffff8124b08e>] chrdev_open+0xae/0x1d0
[<ffffffff81243bcf>] do_dentry_open+0x1ff/0x300
[<ffffffff8124afe0>] ? cdev_put+0x30/0x30
[<ffffffff81244d36>] vfs_open+0x56/0x60
[<ffffffff812545f4>] path_openat+0x4f4/0x1190
[<ffffffff81256621>] do_filp_open+0x91/0x100
[<ffffffff81263547>] ? __alloc_fd+0xc7/0x190
[<ffffffff812450df>] do_sys_open+0x13f/0x210
[<ffffffff812451ce>] SyS_open+0x1e/0x20
[<ffffffff81a99e32>] entry_SYSCALL_64_fastpath+0x1a/0xa4
UBI checks static volumes for data consistency and reads the
whole volume upon first open. If the volume is found erroneous
users of UBI cannot read from it, but another volume update is
possible to fix it. The check is performed by running
ubi_eba_read_leb() on every allocated LEB of the volume.
For static volumes ubi_eba_read_leb() computes the checksum of all
data stored in a LEB. To verify the computed checksum it has to read
the LEB's volume header which stores the original checksum.
If the volume header is not found UBI treats this as fatal internal
error and switches to RO mode. If the UBI device was attached via a
full scan the assumption is correct, the volume header has to be
present as it had to be there while scanning to get known as mapped.
If the attach operation happened via Fastmap the assumption is no
longer correct. When attaching via Fastmap UBI learns the mapping
table from Fastmap's snapshot of the system state and not via a full
scan. It can happen that a LEB got unmapped after a Fastmap was
written to the flash. Then UBI can learn the LEB still as mapped and
accessing it returns only 0xFF bytes. As UBI is not a FTL it is
allowed to have mappings to empty PEBs, it assumes that the layer
above takes care of LEB accounting and referencing.
UBIFS does so using the LEB property tree (LPT).
For static volumes UBI blindly assumes that all LEBs are present and
therefore special actions have to be taken.
The described situation can happen when updating a static volume is
interrupted, either by a user or a power cut.
The volume update code first unmaps all LEBs of a volume and then
writes LEB by LEB. If the sequence of operations is interrupted UBI
detects this either by the absence of LEBs, no volume header present
at scan time, or corrupted payload, detected via checksum.
In the Fastmap case the former method won't trigger as no scan
happened and UBI automatically thinks all LEBs are present.
Only by reading data from a LEB it detects that the volume header is
missing and incorrectly treats this as fatal error.
To deal with the situation ubi_eba_read_leb() from now on checks
whether we attached via Fastmap and handles the absence of a
volume header like a data corruption error.
This way interrupted static volume updates will correctly get detected
also when Fastmap is used.
Cc: <stable@vger.kernel.org>
Reported-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Tested-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Richard Weinberger <richard@nod.at>
Set free_count to zero before walking through ai->erase list
in wl_init().
Found in U-Boot as U-Boot has no workqueue/threads, it immediately
calls erase_worker(), which increase for each erased block
free_count. Without this patch, free_count gets after
this initialized to zero in wl_init(), so the free_count
variable always has the maybe wrong value 0 in U-Boot.
Signed-off-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
My static checker complains that "val" is uninitialized when kstrtoint()
fails.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
My static checker says that "err" can be uninitialized if
"vol->reserved_pebs" is <= 0. I don't think that can happen but
returning a literal is cleaner anyway.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Drop this paranoia check from the old days.
If our MTD driver or the flash is so bad that we even cannot
trust it to write data we have bigger problems.
If one really does not trust the flash and wants write-verify
she can enable UBI io checks using debugfs.
Signed-off-by: Richard Weinberger <richard@nod.at>
On serious situations, UBI may detect serious device corruption,
and switch to read-only mode to protect the data and allow debugging.
This commit exposes this ro-mode on sysfs, so it can be obtained
by userspace tools.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Richard Weinberger <richard@nod.at>
Pull ARM updates from Russell King:
"Changes included in this pull request:
- revert pxa2xx-flash back to using ioremap_cached() and switch
memremap() to use arch_memremap_wb()
- remove pci=firmware command line argument handling
- remove unnecessary arm_dma_set_mask() implementation, the generic
implementation will do for ARM
- removal of the ARM kallsyms "hack" to work around mode switching
veneers and vectors located below PAGE_OFFSET
- tidy up build system output a little
- add L2 cache power management DT bindings
- remove duplicated local_irq_disable() in reboot paths
- handle AMBA primecell devices better at registration time with PM
domains (needed for Samsung SoCs)
- ARM specific preparation to support Keystone II kexec"
* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8567/1: cache-uniphier: activate ways for secondary CPUs
ARM: 8570/2: Documentation: devicetree: Add PL310 PM bindings
ARM: 8569/1: pl2x0: Add OF control of cache power management
ARM: 8568/1: reboot: remove duplicated local_irq_disable()
ARM: 8566/1: drivers: amba: properly handle devices with power domains
ARM: provide arm_has_idmap_alias() helper
ARM: kexec: remove 512MB restriction on kexec crashdump
ARM: provide improved virt_to_idmap() functionality
ARM: kexec: fix crashkernel= handling
ARM: 8557/1: specify install, zinstall, and uinstall as PHONY targets
ARM: 8562/1: suppress "include/generated/mach-types.h is up to date."
ARM: 8553/1: kallsyms: remove --page-offset command line option
ARM: 8552/1: kallsyms: remove special lower address limit for CONFIG_ARM
ARM: 8555/1: kallsyms: ignore ARM mode switching veneers
ARM: 8548/1: dma-mapping: remove arm_dma_set_mask()
ARM: 8554/1: kernel: pci: remove pci=firmware command line parameter handling
ARM: memremap: implement arch_memremap_wb()
memremap: add arch specific hook for MEMREMAP_WB mappings
mtd: pxa2xx-flash: switch back from memremap to ioremap_cached
ARM: reintroduce ioremap_cached() for creating cached I/O mappings
Driver updates for ARM SoCs, these contain various things that touch
the drivers/ directory but got merged through arm-soc for practical
reasons. For the most part, this is now related to power management
controllers, which have not yet been abstracted into a separate
subsystem, and typically require some code in drivers/soc or arch/arm
to control the power domains.
Another large chunk here is a rework of the NVIDIA Tegra USB3.0
support, which was surprisingly tricky and took a long time to
get done.
Finally, reset controller handling as always gets merged through here
as well.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=x+iD
-----END PGP SIGNATURE-----
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC driver updates from Arnd Bergmann:
"Driver updates for ARM SoCs, these contain various things that touch
the drivers/ directory but got merged through arm-soc for practical
reasons.
For the most part, this is now related to power management
controllers, which have not yet been abstracted into a separate
subsystem, and typically require some code in drivers/soc or arch/arm
to control the power domains.
Another large chunk here is a rework of the NVIDIA Tegra USB3.0
support, which was surprisingly tricky and took a long time to get
done.
Finally, reset controller handling as always gets merged through here
as well"
* tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (97 commits)
arm-ccn: Enable building as module
soc/tegra: pmc: Add generic PM domain support
usb: xhci: tegra: Add Tegra210 support
usb: xhci: Add NVIDIA Tegra XUSB controller driver
dt-bindings: usb: xhci-tegra: Add Tegra210 XUSB controller support
dt-bindings: usb: Add NVIDIA Tegra XUSB controller binding
PCI: tegra: Support per-lane PHYs
dt-bindings: pci: tegra: Update for per-lane PHYs
phy: tegra: Add Tegra210 support
phy: Add Tegra XUSB pad controller support
dt-bindings: phy: tegra-xusb-padctl: Add Tegra210 support
dt-bindings: phy: Add NVIDIA Tegra XUSB pad controller binding
phy: core: Allow children node to be overridden
clk: tegra: Add interface to enable hardware control of SATA/XUSB PLLs
drivers: firmware: psci: make two helper functions inline
soc: renesas: rcar-sysc: Add support for R-Car H3 power areas
soc: renesas: rcar-sysc: Add support for R-Car E2 power areas
soc: renesas: rcar-sysc: Add support for R-Car M2-N power areas
soc: renesas: rcar-sysc: Add support for R-Car M2-W power areas
soc: renesas: rcar-sysc: Add support for R-Car H2 power areas
...
Pull misc vfs cleanups from Al Viro:
"Assorted cleanups and fixes all over the place"
* 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
coredump: only charge written data against RLIMIT_CORE
coredump: get rid of coredump_params->written
ecryptfs_lookup(): try either only encrypted or plaintext name
ecryptfs: avoid multiple aliases for directories
bpf: reject invalid names right in ->lookup()
__d_alloc(): treat NULL name as QSTR("/", 1)
mtd: switch ubi_open_volume_path() to vfs_stat()
mtd: switch open_mtd_by_chdev() to use of vfs_stat()
Pull block driver updates from Jens Axboe:
"On top of the core pull request, this is the drivers pull request for
this merge window. This contains:
- Switch drivers to the new write back cache API, and kill off the
flush flags. From me.
- Kill the discard support for the STEC pci-e flash driver. It's
trivially broken, and apparently unmaintained, so it's safer to
just remove it. From Jeff Moyer.
- A set of lightnvm updates from the usual suspects (Matias/Javier,
and Simon), and fixes from Arnd, Jeff Mahoney, Sagi, and Wenwei
Tao.
- A set of updates for NVMe:
- Turn the controller state management into a proper state
machine. From Christoph.
- Shuffling of code in preparation for NVMe-over-fabrics, also
from Christoph.
- Cleanup of the command prep part from Ming Lin.
- Rewrite of the discard support from Ming Lin.
- Deadlock fix for namespace removal from Ming Lin.
- Use the now exported blk-mq tag helper for IO termination.
From Sagi.
- Various little fixes from Christoph, Guilherme, Keith, Ming
Lin, Wang Sheng-Hui.
- Convert mtip32xx to use the now exported blk-mq tag iter function,
from Keith"
* 'for-4.7/drivers' of git://git.kernel.dk/linux-block: (74 commits)
lightnvm: reserved space calculation incorrect
lightnvm: rename nr_pages to nr_ppas on nvm_rq
lightnvm: add is_cached entry to struct ppa_addr
lightnvm: expose gennvm_mark_blk to targets
lightnvm: remove mgt targets on mgt removal
lightnvm: pass dma address to hardware rather than pointer
lightnvm: do not assume sequential lun alloc.
nvme/lightnvm: Log using the ctrl named device
lightnvm: rename dma helper functions
lightnvm: enable metadata to be sent to device
lightnvm: do not free unused metadata on rrpc
lightnvm: fix out of bound ppa lun id on bb tbl
lightnvm: refactor set_bb_tbl for accepting ppa list
lightnvm: move responsibility for bad blk mgmt to target
lightnvm: make nvm_set_rqd_ppalist() aware of vblks
lightnvm: remove struct factory_blks
lightnvm: refactor device ops->get_bb_tbl()
lightnvm: introduce nvm_for_each_lun_ppa() macro
lightnvm: refactor dev->online_target to global nvm_targets
lightnvm: rename nvm_targets to nvm_tgt_type
...
Pull LED updates from Jacek Anaszewski:
"In this merge cycle we had an interaction with MTD subsystem, that
included converting drivers/mtd/nand/nand_base.c to use newly
introduced MTD (NAND/NOR) LED trigger instead of implementing it on
its own.
Related MTD patches are intended to be merged through the LED tree,
before MTD tree is merged, since further MTD development is based on
those modifications.
Summary:
LEDs:
- Introduce a kernel panic LED trigger
- Introduce a MTD (NAND/NOR) trigger
- led-tca6507: silence an uninitialized variable warning
- ledtrig-ide-disk: Move ide_blink_delay to ledtrig_ide_activity()
- leds-ss4200: Add depend on x86 arch
- leds-ss4200: add DMI data for FSC SCALEO Home Server
- leds-triggers: Allow to switch the trigger to "panic" on a kernel panic
- devicetree: leds: Introduce "panic-indicator" optional property
- leds-gpio: Support the "panic-indicator" firmware property
MTD:
- Uninline mtd_write_oob and move it to mtdcore.c
- Remove the "nand-disk" LED trigger
- Hook I/O activity to the MTD LED trigger"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
leds: gpio: Support the "panic-indicator" firmware property
devicetree: leds: Introduce "panic-indicator" optional property
leds: triggers: Allow to switch the trigger to "panic" on a kernel panic
leds: ss4200: add DMI data for FSC SCALEO Home Server
leds: ss4200: Add depend on x86 arch
leds: ledtrig-ide-disk: Move ide_blink_delay to ledtrig_ide_activity()
leds: tca6507: silence an uninitialized variable warning
mtd: Hook I/O activity to the MTD LED trigger
mtd: nand: Remove the "nand-disk" LED trigger
leds: trigger: Introduce a MTD (NAND/NOR) trigger
mtd: Uninline mtd_write_oob and move it to mtdcore.c
leds: trigger: Introduce a kernel panic LED trigger
Also note the GigaDevice JEDEC ID.
No write-protect support yet, since this flash uses a different status
register layout.
Cc: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Acked-by: Marek Vasut <marex@denx.de>
* introduction of the ECC algo concept to extend the ECC mode one
* replacement of the nand_ecclayout infrastructure by something more
future-proof.
* addition of an mtd-activity led trigger to replace the nand-activity
one
And a bunch of specific NAND driver improvements/fixes. Here are the
changes that are worth mentioning:
* rework of the OMAP GPMC and NAND drivers
* prepare the sunxi NAND driver to receive DMA support
* handle bitflips in erased pages on GPMI revisions that do not support
this in hardware.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=PYza
-----END PGP SIGNATURE-----
Merge tag 'nand/for-4.7' of github.com:linux-nand/linux
Updates from Boris Brezillon:
This pull request contains the following infrastructure changes:
* introduction of the ECC algo concept to extend the ECC mode one
* replacement of the nand_ecclayout infrastructure by something more
future-proof.
* addition of an mtd-activity led trigger to replace the nand-activity
one
And a bunch of specific NAND driver improvements/fixes. Here are the
changes that are worth mentioning:
* rework of the OMAP GPMC and NAND drivers
* prepare the sunxi NAND driver to receive DMA support
* handle bitflips in erased pages on GPMI revisions that do not support
this in hardware.
* tag 'nand/for-4.7' of github.com:linux-nand/linux: (152 commits)
mtd: brcmnand: respect ECC algorithm set by NAND subsystem
gpmi-nand: Handle ECC Errors in erased pages
Documentation: devicetree: deprecate "soft_bch" nand-ecc-mode value
mtd: nand: add support for "nand-ecc-algo" DT property
mtd: mtd: drop NAND_ECC_SOFT_BCH enum value
mtd: drop support for NAND_ECC_SOFT_BCH as "soft_bch" mapping
mtd: nand: read ECC algorithm from the new field
mtd: nand: fsmc: validate ECC setup by checking algorithm directly
mtd: nand: set ECC algorithm to Hamming on fallback
staging: mt29f_spinand: set ECC algorithm explicitly
CRIS v32: nand: set ECC algorithm explicitly
mtd: nand: atmel: set ECC algorithm explicitly
mtd: nand: davinci: set ECC algorithm explicitly
mtd: nand: bf5xx: set ECC algorithm explicitly
mtd: nand: omap2: Fix high memory dma prefetch transfer
mtd: nand: omap2: Start dma request before enabling prefetch
mtd: nandsim: add __init attribute
mtd: nand: move of_get_nand_xxx() helpers into nand_base.c
mtd: nand: sh_flctl: rely on generic DT parsing done in nand_scan_ident()
mtd: nand: mxc: rely on generic DT parsing done in nand_scan_ident()
...
This is more obvious than guessing based on ECC strength. It allows
using NAND on devices with BCH-1 (e.g. D-Link DIR-885L).
This maintains DT backward compatibility by defaulting to Hamming if a
1-bit ECC algorithm is specified without a corresponding algorithm
selection. i.e., to use BCH-1, you must specify:
nand-ecc-strength = <1>;
nand-ecc-step-size = <512>;
nand-ecc-algo = "bch";
Also adds a check to ensure we haven't allowed someone to get by with SW
ECC. If we want to support SW ECC, we need to refactor some other pieces
of this driver.
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Tested-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
ECC is only calculated for written pages. As erased pages are not
actively written the ECC is always invalid. For this purpose the
Hardware BCH unit is able to check for erased pages and does not raise
an ECC error in this case. This behaviour can be influenced using the
BCH_MODE register which sets the number of allowed bitflips in an erased
page. Unfortunately the unit is not capable of fixing the bitflips in
memory.
To avoid complete software checks for erased pages, we can simply check
buffers with uncorrectable ECC errors because we know that any erased
page with errors is uncorrectable by the BCH unit.
This patch adds the generic nand_check_erased_ecc_chunk() to gpmi-nand
to correct erased pages. To have the valid data in the buffer before
using them, this patch moves the read_page_swap_end() call before the
ECC status checking for-loop.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
[Squashed patches by Stefan and Boris to check ECC area]
Tested-by: Stefan Christ <s.christ@phytec.de>
Acked-by: Han xu <han.xu@nxp.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
So far it was only possible to specify ECC algorithm using "soft" and
"soft_bch" values of nand-ecc-mode prop. There wasn't a way to specify
it for a hardware ECC mode.
Now that we have independent field in NAND subsystem for storing info
about ECC algorithm we may also add support for this new DT property.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This value should not be part of nand_ecc_modes_t as it specifies
algorithm not a mode. We successfully managed to introduce new "algo"
field which is respected now.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
There isn't any difference between handling NAND_ECC_SOFT and
NAND_ECC_SOFT_BCH now. What matters is the new field called "algo".
Please note we're keeping backward DT compatibility. We are still
treating "soft_bch" value as the one setting Hamming algorithm, it's
just handled in of_get_nand_ecc_algo now.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Now we have all drivers properly setting this new field we can start
using it. For a very short period of time we should support both values:
NAND_ECC_SOFT and NAND_ECC_SOFT_BCH treating them the same. It's because
of_get_nand_ecc_mode may still be setting NAND_ECC_SOFT_BCH.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
NAND core sets ECC algorithm in algo field now and it should be
preferred over the mode field. This also prepares driver for dropping
NAND_ECC_SOFT_BCH.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This is part of process deprecating NAND_ECC_SOFT_BCH (and switching to
enum nand_ecc_algo).
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This is part of process deprecating NAND_ECC_SOFT_BCH (and switching to
enum nand_ecc_algo).
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This is part of process deprecating NAND_ECC_SOFT_BCH (and switching to
enum nand_ecc_algo).
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This is part of process deprecating NAND_ECC_SOFT_BCH (and switching to
enum nand_ecc_algo).
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Based on DMA documentation and testing using high memory buffer when doing
dma transfers can lead to various issues including kernel panics.
To workaround this simply use cpu copy.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
The prefetch engine sends a dma request once a FIFO threshold has
been met. No other requests are received until the previous request
is handled.
Starting a dma transfer (dma_async_issue_pending) results in any
previous event for the dma channel to be cleared. Therefore, starting
the prefetch engine before initiating the dma transfer may result in
the prefetch triggering a dma request but instead of it being handled
it can end up being cleared. This will result in a hang since the code
will continue to wait for the dma request to complete.
By initiating the dma request before enabling the prefetch engine this
race condition is avoided and no dma request are missed/cleared.
Signed-off-by: Franklin S Cooper Jr <fcooper@ti.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Add __init attribute on functions that are only called from other __init
functions and that are not inlined, at least with gcc version 4.8.4 on an
x86 machine with allyesconfig. Currently, the functions are put in the
.text.unlikely segment. Declaring them as __init will cause them to be
put in the .init.text and to disappear after initialization.
The result of objdump -x on the functions before the change is as follows:
000000000000059a l F .text.unlikely 0000000000000239 alloc_device
000000000000034e l F .text.unlikely 000000000000002e get_partition_name
00000000000007d3 l F .text.unlikely 00000000000005da init_nandsim
And after the change it is as follows:
0000000000000029 l F .init.text 0000000000000234 alloc_device
0000000000000000 l F .init.text 0000000000000029 get_partition_name
000000000000025d l F .init.text 00000000000005d5 init_nandsim
Done with the help of Coccinelle. The semantic patch checks for local
static non-init functions that are called from an __init function and are
not called from any other function.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Now that all drivers go through nand_set_flash_node() to parse the generic
NAND properties, we can move all of_get_nand_xxx() helpers in to
nand_base.c, make them static and remove of_mtd.c and of_mtd.h.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
The core now takes care of parsing generic DT properties in
nand_scan_ident() when nand_set_flash_node() has been called.
Rely on this initialization instead of calling of_get_nand_xxx()
manually.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
