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* bugfixes:
NFSv4: Return delegations synchronously in evict_inode
SUNRPC: Fix a regression when reconnecting
NFS: remount with security change should return EINVAL
nfs: do not export discarded symbols
NFSv4.1: don't export static symbol
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The brand new GCC 5.1.0 warns by default on using a boolean in the
switch condition. This results in the following warning:
fs/nfs/nfs4proc.c: In function 'nfs4_proc_get_rootfh':
fs/nfs/nfs4proc.c:3100:10: warning: switch condition has boolean value [-Wswitch-bool]
switch (auth_probe) {
^
This code was obviously using switch to make use of the fall-through
semantics (without the usual comment, though).
Rewrite that code using if statements to avoid the warning and make
the code a bit more readable on the way.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Don't unnecessarily cast allocation return value in
fs/nfs/inode.c::nfs_alloc_inode().
Signed-off-by: Firo Yang <firogm@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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If a READDIR reply comes back without any page data, avoid a NULL pointer
dereference in xdr_copy_to_scratch().
BUG: unable to handle kernel NULL pointer dereference at 0000000000000001
IP: [<ffffffff813a378d>] memcpy+0xd/0x110
...
Call Trace:
? xdr_inline_decode+0x7a/0xb0 [sunrpc]
nfs3_decode_dirent+0x73/0x320 [nfsv3]
nfs_readdir_page_filler+0xd5/0x4e0 [nfs]
? nfs3_rpc_wrapper.constprop.9+0x42/0xc0 [nfsv3]
nfs_readdir_xdr_to_array+0x1fa/0x330 [nfs]
? mem_cgroup_commit_charge+0xac/0x160
? nfs_readdir_xdr_to_array+0x330/0x330 [nfs]
nfs_readdir_filler+0x22/0x90 [nfs]
do_read_cache_page+0x7e/0x1a0
read_cache_page+0x1c/0x20
nfs_readdir+0x18e/0x660 [nfs]
? nfs3_xdr_dec_getattr3res+0x80/0x80 [nfsv3]
iterate_dir+0x97/0x130
SyS_getdents+0x94/0x120
? fillonedir+0xd0/0xd0
system_call_fastpath+0x12/0x17
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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This reverts commit 5a254d08b086d80cbead2ebcee6d2a4b3a15587a.
Since commit 5a254d08b086 ("nfs: replace nfs_add_stats with
nfs_inc_stats when add one"), nfs_readpage and nfs_do_writepage use
nfs_inc_stats to increment NFSIOS_READPAGES and NFSIOS_WRITEPAGES
instead of nfs_add_stats.
However nfs_inc_stats does not do the same thing as nfs_add_stats with
value 1 because these functions work on distinct stats:
nfs_inc_stats increments stats from "enum nfs_stat_eventcounters" (in
server->io_stats->events) and nfs_add_stats those from "enum
nfs_stat_bytecounters" (in server->io_stats->bytes).
Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Fixes: 5a254d08b086 ("nfs: replace nfs_add_stats with nfs_inc_stats...")
Cc: stable@vger.kernel.org # 3.19+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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I added the nfs4 prefix to make it obvious that this file is built into
the NFS v4 module, and not the generic client.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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This file is only used internally to the NFS v4 module, so it doesn't
need to be in the global include path. I also renamed it from
nfs_idmap.h to nfs4idmap.h to emphasize that it's an NFSv4-only include
file.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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The idmapper is completely internal to the NFS v4 module, so this macro
will always evaluate to true. This patch also removes unnecessary
includes of this file from the generic NFS client.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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d4b18c3e (pnfs: remove GETDEVICELIST implementation) removed the
GETDEVICELIST operation from the NFS client, but left a "hole" in the
nfs4_procedures array. This caused /proc/self/mountstats to report an
operation named "51" where GETDEVICELIST used to be. This patch adds a
stub to fix mountstats.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Fixes: d4b18c3e (pnfs: remove GETDEVICELIST implementation)
Cc: stable@vger.kernel.org # 3.17+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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For flexfiles driver, we might choose to read from mirror index other
than 0 while mirror_count is always 1 for read.
Reported-by: Jean Spector <jean@primarydata.com>
Cc: <stable@vger.kernel.org> # v3.19+
Cc: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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For direct read that has IO size larger than rsize, we'll split
it into several READ requests and nfs_direct_good_bytes() would
count completed bytes incorrectly by eating last zero count reply.
Fix it by handling mirror and non-mirror cases differently such that
we only count mirrored writes differently.
This fixes 5fadeb47("nfs: count DIO good bytes correctly with mirroring").
Reported-by: Jean Spector <jean@primarydata.com>
Cc: <stable@vger.kernel.org> # v3.19+
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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2ef47eb1 (NFS: Fix use of nfs_attr_use_mounted_on_fileid()) was a good
start to fixing a circular directory structure warning for NFS v4
"junctioned" mountpoints. Unfortunately, further testing continued to
generate this error.
My server is configured like this:
anna@nfsd ~ % df
Filesystem Size Used Avail Use% Mounted on
/dev/vda1 9.1G 2.0G 6.5G 24% /
/dev/vdc1 1014M 33M 982M 4% /exports
/dev/vdc2 1014M 33M 982M 4% /exports/vol1
/dev/vdc3 1014M 33M 982M 4% /exports/vol1/vol2
anna@nfsd ~ % cat /etc/exports
/exports/ *(rw,async,no_subtree_check,no_root_squash)
/exports/vol1/ *(rw,async,no_subtree_check,no_root_squash)
/exports/vol1/vol2 *(rw,async,no_subtree_check,no_root_squash)
I've been running chown across the entire mountpoint twice in a row to
hit this problem. The first run succeeds, but the second one fails with
the circular directory warning along with:
anna@client ~ % dmesg
[Apr 3 14:28] NFS: server 192.168.100.204 error: fileid changed
fsid 0:39: expected fileid 0x100080, got 0x80
WHere 0x80 is the mountpoint's fileid and 0x100080 is the mounted-on
fileid.
This patch fixes the issue by requesting an updated mounted-on fileid
from the server during nfs_update_inode(), and then checking that the
fileid stored in the nfs_inode matches either the fileid or mounted-on
fileid returned by the server.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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v2: gracefully handle the case where some dentry pointers end up NULL
and be more dilligent about zeroing out dentry pointers
We currently have a problem that SELinux policy is being enforced when
creating debugfs files. If a debugfs file is created as a side effect of
doing some syscall, then that creation can fail if the SELinux policy
for that process prevents it.
This seems wrong. We don't do that for files under /proc, for instance,
so Bruce has proposed a patch to fix that.
While discussing that patch however, Greg K.H. stated:
"No kernel code should care / fail if a debugfs function fails, so
please fix up the sunrpc code first."
This patch converts all of the sunrpc debugfs setup code to be void
return functins, and the callers to not look for errors from those
functions.
This should allow rpc_clnt and rpc_xprt creation to work, even if the
kernel fails to create debugfs files for some reason.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: "J. Bruce Fields" <bfields@fieldses.org>
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Chuck pointed out a problem that crept in with commit 6ffa30d3f734 (nfs:
don't call blocking operations while !TASK_RUNNING). Linux counts tasks
in uninterruptible sleep against the load average, so this caused the
system's load average to be pinned at at least 1 when there was a
NFSv4.1+ mount active.
Not a huge problem, but it's probably worth fixing before we get too
many complaints about it. This patch converts the code back to use
TASK_INTERRUPTIBLE sleep, simply has it flush any signals on each loop
iteration. In practice no one should really be signalling this thread at
all, so I think this is reasonably safe.
With this change, there's also no need to game the hung task watchdog so
we can also convert the schedule_timeout call back to a normal schedule.
Cc: <stable@vger.kernel.org>
Reported-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Fixes: commit 6ffa30d3f734 (“nfs: don't call blocking . . .”)
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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At the very least, we should not be taking the i_mutex until after
checking if the server even supports ALLOCATE or DEALLOCATE, allowing
v4.0 or v4.1 to exit without potentially waiting on a lock.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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This patch adds a GETATTR to the end of ALLOCATE and DEALLOCATE
operations so we can set the updated inode size and change attribute
directly. DEALLOCATE will still need to release pagecache pages, so
nfs42_proc_deallocate() now calls truncate_pagecache_range() before
contacting the server.
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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The LAYOUTCOMMIT operation means different things to different layout types.
For blocks and objects, it is both a data and metadata consistency operation.
For files and flexfiles, it is only a metadata consistency operation.
This patch separates out the 2 cases, allowing the files/flexfiles layout
drivers to optimise away the data consistency calls to layoutcommit.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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We must not send a close or delegreturn that would result in a
return-on-close of the layout without ensuring that we've also
sent the necessary layoutcommit.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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If the caller does not specify the O_SYNC flag, then it is legitimate
to return from O_DIRECT without doing a pNFS layoutcommit operation.
However if the file is opened O_DIRECT|O_SYNC then we'd better get it
right.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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We don't just want to sync out buffered writes, but also O_DIRECT ones.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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File unlock needs to update both data and metadata on the NFS server
in order to act as a synchronisation point for other clients.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Then apply it to nfs_setattr() and nfs_getattr().
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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pnfs_set_layoutcommit() and pnfs_commit_set_layoutcommit() are 100% identical
except for the function arguments. Refactor to eliminate the difference.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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If the NFS_INO_LAYOUTCOMMIT flag was unset, then we _must_ ensure that
we also reset the last write byte (lwb) for that layout. The current
code depends on us clearing the lwb when we clear NFS_INO_LAYOUTCOMMIT,
which is not the case when we call pnfs_clear_layoutcommit().
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Minor optimisation for the case where the layout has return-on-close
enabled.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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I appear to have missed this when adding the ftrace probes.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Make it easier to grep for these functions by name.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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The spec says that once all layouts that reference a given deviceid
have been returned, then we are only allowed to continue to cache
the deviceid if the metadata server supports notifications.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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We are only allowed to cache deviceinfo if the server supports notifications
and actually promises to call us back when changes occur. Right now, we
request those notifications, but then we don't check the server's reply.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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There really is no reason to do so.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Use of synchronize_rcu() when unmounting and potentially freeing a lot
of deviceids is problematic. There really is no reason why we can't just
use kfree_rcu() here.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Kinglong Mee reports that asynchronous delegations are being killed
by the call to rpc_shutdown_client() when unmounting. This can lead
to state leakage on the server until the client lease expires.
Reported-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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If the task needs to give up the socket lock in order to allow a
reconnect to occur, then it must also clear the 'rq_bytes_sent' field
so that when it retransmits, it knows to start from the beginning.
Fixes: 718ba5b87343 ("SUNRPC: Add helpers to prevent socket create from racing")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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This follows up "nfs: fix dio deadlock when O_DIRECT flag is flipped"
and removes the unnecessary CONFIG_NFS_SWAP switch.
Signed-off-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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fix build-warning introduced by commit: f0eede10fd4 ("SUNRPC: use
jiffies_to_msecs for converting jiffies") which did not fixup
the format properly (my bad).
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Do so on the assumption that for most use cases, that list will turn into
a more or less LRU-ordered list, and so the list traversals in
nfs_client_return_marked_delegations() are likely to be shorter before
hitting a candidate to return.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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Use jiffies_to_msecs for converting jiffies as it handles all of the corner
cases reliably and also helps readability.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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A remount that alters security flavors can appear to succeed when it should
instead return -EINVAL. Check to see if the current security flavor exists
within the flavors specified in the remount options, and if not fail the
remount.
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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The function nfs4_pnfs_v3_ds_connect_unload is exported so it can be
used by other modules, but is also marked '__exit' and will be
discarded when built into the kernel, as pointed out by this
linker error:
`nfs4_pnfs_v3_ds_connect_unload' referenced in section `___ksymtab_gpl+nfs4_pnfs_v3_ds_connect_unload' of fs/built-in.o: defined in discarded section `.exit.text' of fs/built-in.o
This removes the __exit annotation to make it safe to call this function.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 5f01d9539496 ("nfs41: create NFSv3 DS connection if specified")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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The semantic patch that fixes this problem is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@r@
type T;
identifier f;
@@
static T f (...) { ... }
@@
identifier r.f;
declarer name EXPORT_SYMBOL_GPL;
@@
-EXPORT_SYMBOL_GPL(f);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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POLL_OUT isn't what callers of ->poll() are expecting to see; it's
actually __SI_POLL | 2 and it's a siginfo code, not a poll bitmap
bit...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@vger.kernel.org
Cc: Bruce Fields <bfields@fieldses.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here's a round of USB fixes for 4.0-rc3.
Nothing major, the usual gadget, xhci and usb-serial fixes and a few
new device ids as well.
All have been in linux-next successfully"
* tag 'usb-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (36 commits)
xhci: Workaround for PME stuck issues in Intel xhci
xhci: fix reporting of 0-sized URBs in control endpoint
usb: ftdi_sio: Add jtag quirk support for Cyber Cortex AV boards
USB: ch341: set tty baud speed according to tty struct
USB: serial: cp210x: Adding Seletek device id's
USB: pl2303: disable break on shutdown
USB: mxuport: fix null deref when used as a console
USB: serial: clean up bus probe error handling
USB: serial: fix port attribute-creation race
USB: serial: fix tty-device error handling at probe
USB: serial: fix potential use-after-free after failed probe
USB: console: add dummy __module_get
USB: ftdi_sio: add PIDs for Actisense USB devices
Revert "USB: serial: make bulk_out_size a lower limit"
cdc-acm: Add support for Denso cradle CU-321
usb-storage: support for more than 8 LUNs
uas: Add US_FL_NO_REPORT_OPCODES for JMicron JMS539
USB: usbfs: don't leak kernel data in siginfo
xhci: Clear the host side toggle manually when endpoint is 'soft reset'
xhci: Allocate correct amount of scratchpad buffers
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are some tty and serial driver fixes for 4.0-rc3.
Along with the atime fix that you know about, here are some other
serial driver bugfixes as well. Most notable is a wait_until_sent
bugfix that was traced back to being around since before 2.6.12 that
Johan has fixed up.
All have been in linux-next successfully"
* tag 'tty-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
TTY: fix tty_wait_until_sent maximum timeout
TTY: fix tty_wait_until_sent on 64-bit machines
USB: serial: fix infinite wait_until_sent timeout
TTY: bfin_jtag_comm: remove incorrect wait_until_sent operation
net: irda: fix wait_until_sent poll timeout
serial: uapi: Declare all userspace-visible io types
serial: core: Fix iotype userspace breakage
serial: sprd: Fix missing spin_unlock in sprd_handle_irq()
console: Fix console name size mismatch
tty: fix up atime/mtime mess, take four
serial: 8250_dw: Fix get_mctrl behaviour
serial:8250:8250_pci: delete unneeded quirk entries
serial:8250:8250_pci: fix redundant entry report for WCH_CH352_2S
Change email address for 8250_pci
serial: 8250: Revert "tty: serial: 8250_core: read only RX if there is something in the FIFO"
Revert "tty/serial: of_serial: add DT alias ID handling"
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are some IIO and staging driver fixes for 4.0-rc3.
Details are in the shortlog, nothing major, mostly IIO fixes for
reported issues.
All have been in linux-next successfully"
* tag 'staging-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (23 commits)
staging: comedi: adv_pci1710: fix AI INSN_READ for non-zero channel
staging: comedi: vmk80xx: remove "firmware version" kernel messages
staging: comedi: comedi_isadma: fix "stalled" detect in comedi_isadma_disable_on_sample()
iio: ak8975: fix AK09911 dependencies
iio: common: ssp_sensors: Protect PM-only functions to kill warning
IIO: si7020: Allocate correct amount of memory in devm_iio_device_alloc
Revert "iio:humidity:si7020: fix pointer to i2c client"
iio: light: gp2ap020a00f: Select REGMAP_I2C
iio: light: jsa1212: Select REGMAP_I2C
iio: ad5686: fix optional reference voltage declaration
iio:adc:mcp3422 Fix incorrect scales table
iio: mxs-lradc: fix iio channel map regression
iio: imu: adis16400: Fix sign extension
staging: iio: ad2s1200: Fix sign extension
iio: mxs-lradc: only update the buffer when its conversions have finished
iio: mxs-lradc: make ADC reads not unschedule touchscreen conversions
iio: mxs-lradc: make ADC reads not disable touchscreen interrupts
iio: mxs-lradc: separate touchscreen and buffer virtual channels
iio: imu: inv_mpu6050: Prevent dereferencing NULL
iio: iadc: wait_for_completion_timeout time in jiffies
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are two char/misc fixes for 4.0-rc3.
One is a reported binder driver fix needed due to a change in the mm
core that happened in 4.0-rc1. Another is a mei driver fix that
resolves a reported issue in that driver.
Both have been in linux-next for a while"
* tag 'char-misc-4.0-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
mei: make device disabled on stop unconditionally
android: binder: fix binder mmap failures
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull "code of conflict" from Greg KH:
"This file tries to set the rational basis for our code reviews, gives
some advice on how to conduct them, and provides an excalation channel
for any kernel developers if they so desire it"
[ Let's see how this works ]
* tag 'cc-4.0-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Code of Conflict
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git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"A set of updates and bugfixes for the new designware-baytrail driver.
And a documentation bugfix"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: imx: add required clocks property to binding
i2c: designware-baytrail: baytrail_i2c_acquire() might sleep
i2c: designware-baytrail: cross-check lock functions
i2c: designware-baytrail: fix sparse warnings
i2c: designware-baytrail: fix typo in error path
i2c: designware-baytrail: describe magic numbers
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Pull slave-dmaengine fixes from Vinod Koul:
"This contains small fixes spread across the drivers"
* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: mmp_pdma: fix warning about slave caps
dmaengine: qcom_bam_dma: fix wrong register offsets
dmaengine: bam-dma: fix a warning about missing capabilities
dmaengine: ioatdma: workaround for incorrect DMACAP register
dmaengine: at_xdmac: fix for chan conf simplification
dmaengine: dw: don't handle interrupt when dmaengine is not used
dma: mmp-tdma: refine dma disable and dma-pos update
dmaengine: shdma: Move DMA stop to (runtime) suspend callbacks
dmaenegine: mmp-pdma: fix irq handler overwrite physical chan issue
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