Commit Graph

518936 Commits

Author SHA1 Message Date
Anna Schumaker 40c64c26a4 NFS: Move nfs_idmap.h into fs/nfs/
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>
2015-04-23 15:16:14 -04:00
Anna Schumaker f9ebd61855 NFS: Remove CONFIG_NFS_V4 checks from nfs_idmap.h
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>
2015-04-23 15:16:13 -04:00
Anna Schumaker 7c61f0d389 NFS: Add a stub for GETDEVICELIST
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>
2015-04-23 15:16:13 -04:00
Peng Tao 05f54903d9 nfs: remove WARN_ON_ONCE from nfs_direct_good_bytes
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>
2015-04-23 15:05:19 -04:00
Peng Tao 1ccbad9f9f nfs: fix DIO good bytes calculation
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>
2015-04-23 15:05:18 -04:00
Anna Schumaker ea96d1ecbe nfs: Fetch MOUNTED_ON_FILEID when updating an inode
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>
2015-04-23 14:43:54 -04:00
Jeff Layton 3f94009816 sunrpc: make debugfs file creation failure non-fatal
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>
2015-04-23 14:42:27 -04:00
Jeff Layton 5d05e54af3 nfs: fix high load average due to callback thread sleeping
Chuck pointed out a problem that crept in with commit 6ffa30d3f7 (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 6ffa30d3f7 (“nfs: don't call blocking . . .”)
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
2015-04-23 14:38:07 -04:00
Anna Schumaker f830f7ddd9 NFS: Reduce time spent holding the i_mutex during fallocate()
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>
2015-04-23 14:36:28 -04:00
Anna Schumaker 9a51940bf6 NFS: Don't zap caches on fallocate()
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>
2015-04-23 14:36:28 -04:00
Luis R. Rodriguez e4b6c30375 ethernet: myri10ge: use arch_phys_wc_add()
This driver already uses ioremap_wc() on the same range
so when write-combining is available that will be used
instead.

Cc: Hyong-Youb Kim <hykim@myri.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Suresh Siddha <sbsiddha@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Juergen Gross <jgross@suse.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: netdev@vger.kernel.org
Cc: Juergen Gross <jgross@suse.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Antonino Daplas <adaplas@gmail.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc: linux-kernel@vger.kernel.org
Cc: netdev@vger.kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-23 14:28:14 -04:00
Geert Uytterhoeven 2fb42aab48 can: CAN_GRCAN should depend on HAS_DMA
If NO_DMA=y:

    drivers/built-in.o: In function `grcan_free_dma_buffers':
    grcan.c:(.text+0x2d7716): undefined reference to `dma_free_coherent'
    drivers/built-in.o: In function `grcan_allocate_dma_buffers':
    grcan.c:(.text+0x2d779c): undefined reference to `dma_alloc_coherent'

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-23 14:09:58 -04:00
Geert Uytterhoeven 0357cc1def ethernet: arc: ARC_EMAC and EMAC_ROCKCHIP should depend on HAS_DMA
If NO_DMA=y:

    drivers/built-in.o: In function `arc_emac_tx_clean':
    emac_main.c:(.text+0x2decde): undefined reference to `dma_unmap_single'
    drivers/built-in.o: In function `arc_emac_rx':
    emac_main.c:(.text+0x2dee1c): undefined reference to `dma_unmap_single'
    emac_main.c:(.text+0x2dee72): undefined reference to `dma_map_single'
    emac_main.c:(.text+0x2dee7e): undefined reference to `dma_mapping_error'
    drivers/built-in.o: In function `arc_emac_probe':
    (.text+0x2df2ee): undefined reference to `dmam_alloc_coherent'
    drivers/built-in.o: In function `arc_emac_open':
    emac_main.c:(.text+0x2df6d8): undefined reference to `dma_map_single'
    emac_main.c:(.text+0x2df6e4): undefined reference to `dma_mapping_error'
    drivers/built-in.o: In function `arc_emac_tx':
    emac_main.c:(.text+0x2df9e4): undefined reference to `dma_map_single'
    emac_main.c:(.text+0x2df9f0): undefined reference to `dma_mapping_error'

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-23 14:09:58 -04:00
Geert Uytterhoeven 61e77d297d ethernet: amd: AMD_XGBE should depend on HAS_DMA
If NO_DMA=y:

    drivers/built-in.o: In function `xgbe_probe':
    xgbe-main.c:(.text+0x2def0a): undefined reference to `dma_set_mask'
    xgbe-main.c:(.text+0x2def20): undefined reference to `dma_supported'
    drivers/built-in.o: In function `xgbe_rx_poll':
    xgbe-drv.c:(.text+0x2e0320): undefined reference to `dma_sync_single_for_cpu'
    xgbe-drv.c:(.text+0x2e035e): undefined reference to `dma_sync_single_for_cpu'
    drivers/built-in.o: In function `xgbe_unmap_rdata':
    xgbe-desc.c:(.text+0x2e5fe4): undefined reference to `dma_unmap_page'
    xgbe-desc.c:(.text+0x2e5ffa): undefined reference to `dma_unmap_single'
    xgbe-desc.c:(.text+0x2e604a): undefined reference to `dma_unmap_page'
    xgbe-desc.c:(.text+0x2e6084): undefined reference to `dma_unmap_page'
    drivers/built-in.o: In function `xgbe_alloc_pages':
    xgbe-desc.c:(.text+0x2e6156): undefined reference to `dma_map_page'
    xgbe-desc.c:(.text+0x2e6164): undefined reference to `dma_mapping_error'
    drivers/built-in.o: In function `xgbe_free_ring':
    xgbe-desc.c:(.text+0x2e63d4): undefined reference to `dma_unmap_page'
    xgbe-desc.c:(.text+0x2e640e): undefined reference to `dma_unmap_page'
    xgbe-desc.c:(.text+0x2e644a): undefined reference to `dma_free_coherent'
    drivers/built-in.o: In function `xgbe_init_ring':
    xgbe-desc.c:(.text+0x2e64d4): undefined reference to `dma_alloc_coherent'
    drivers/built-in.o: In function `xgbe_map_tx_skb':
    xgbe-desc.c:(.text+0x2e6628): undefined reference to `dma_map_single'
    xgbe-desc.c:(.text+0x2e6638): undefined reference to `dma_mapping_error'
    xgbe-desc.c:(.text+0x2e66b2): undefined reference to `dma_map_single'
    xgbe-desc.c:(.text+0x2e66c2): undefined reference to `dma_mapping_error'
    xgbe-desc.c:(.text+0x2e6762): undefined reference to `dma_map_page'
    xgbe-desc.c:(.text+0x2e6772): undefined reference to `dma_mapping_error'

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-23 14:09:58 -04:00
Wolfram Sang fcdd5f09c0 i2c: st: add include for pinctrl
The driver uses pinctrl directly and thus should include the appropriate
header. Sort the headers while we are here to have a better view what is
included and what is not.

Reported-by: Pascal Huerst <pascal.huerst@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-04-23 19:35:33 +02:00
Wolfram Sang 133778482e i2c: mux: use proper dev when removing "channel-X" symlinks
Those symlinks are created for the mux_dev, so we need to remove it from
there. Currently, it breaks for muxes where the mux_dev is not the device
of the parent adapter like this:

[   78.234644] WARNING: CPU: 0 PID: 365 at fs/sysfs/dir.c:31 sysfs_warn_dup+0x5c/0x78()
[   78.242438] sysfs: cannot create duplicate filename '/devices/platform/i2cbus@8/channel-0'

Remove confusing comments while we are here.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Fixes: c9449affad
Cc: stable@kernel.org
2015-04-23 19:35:33 +02:00
Wolfram Sang 4c8979b226 i2c: digicolor: remove duplicate include
And sort them to prevent this from happening again.

Reported-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-04-23 19:35:32 +02:00
Charles Keepax 6ada5c1e1b i2c: Mark adapter devices with pm_runtime_no_callbacks
Commit 523c5b8964 ("i2c: Remove support for legacy PM") removed the PM
ops from the bus type, which causes the pm operations on the s3c2410
adapter device to fail (-ENOSUPP in rpm_callback). The adapter device
doesn't get bound to a driver and as such can't have its own pm_runtime
callbacks. Previously this was fine as the bus callbacks would have been
used, but now this can cause devices which use PM runtime and are
attached over I2C to fail to resume.

This commit fixes this issue by marking all adapter devices with
pm_runtime_no_callbacks, since they can't have any.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Beata Michalska <b.michalska@samsung.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Fixes: 523c5b8964
Cc: stable@kernel.org
2015-04-23 19:35:31 +02:00
Wolfram Sang 9ef8a0bee9 i2c: pca-platform: fix broken email address
My Pengutronix address is not valid anymore, redirect people to the Pengutronix
kernel team.

Reported-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Robert Schwebel <r.schwebel@pengutronix.de>
2015-04-23 19:35:30 +02:00
Wolfram Sang 4daf5a2839 i2c: mxs: fix broken email address
My Pengutronix address is not valid anymore, redirect people to the Pengutronix
kernel team.

Reported-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Robert Schwebel <r.schwebel@pengutronix.de>
2015-04-23 19:35:29 +02:00
Dmitry Torokhov c6cbfb91b8 i2c: rk3x: report number of messages transmitted
master_xfer() method should return number of i2c messages transferred,
but on Rockchip we were usually returning just 1, which caused trouble
with users that actually check number of transferred messages vs.
checking for negative error codes.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
2015-04-23 19:35:28 +02:00
Jason Eastman d1ab39f17f net: unix: garbage: fixed several comment and whitespace style issues
fixed several comment and whitespace style issues

Signed-off-by: Jason Eastman <eastman.jason.linux@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-23 13:15:20 -04:00
David S. Miller 37a06a87f2 Merge branch 'tipc-fixes'
Jon Maloy says:

====================
tipc: three bug fixes

A set of unrelated corrections; one for the tipc netns implementation,
one regarding problems with random link resets, and one removing a
an erroneous refcount decrement when reading link statistsics via
netlink.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-23 11:50:34 -04:00
Erik Hugne 73a3173773 tipc: fix node refcount issue
When link statistics is dumped over netlink, we iterate over
the list of peer nodes and append each links statistics to
the netlink msg. In the case where the dump is resumed after
filling up a nlmsg, the node refcnt is decremented without
having been incremented previously which may cause the node
reference to be freed. When this happens, the following
info/stacktrace will be generated, followed by a crash or
undefined behavior.
We fix this by removing the erroneous call to tipc_node_put
inside the loop that iterates over nodes.

[  384.312303] INFO: trying to register non-static key.
[  384.313110] the code is fine but needs lockdep annotation.
[  384.313290] turning off the locking correctness validator.
[  384.313290] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.0.0+ #13
[  384.313290] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  384.313290]  ffff88003c6d0290 ffff88003cc03ca8 ffffffff8170adf1 0000000000000007
[  384.313290]  ffffffff82728730 ffff88003cc03d38 ffffffff810a6a6d 00000000001d7200
[  384.313290]  ffff88003c6d0ab0 ffff88003cc03ce8 0000000000000285 0000000000000001
[  384.313290] Call Trace:
[  384.313290]  <IRQ>  [<ffffffff8170adf1>] dump_stack+0x4c/0x65
[  384.313290]  [<ffffffff810a6a6d>] __lock_acquire+0xf3d/0xf50
[  384.313290]  [<ffffffff810a7375>] lock_acquire+0xd5/0x290
[  384.313290]  [<ffffffffa0043e8c>] ? link_timeout+0x1c/0x170 [tipc]
[  384.313290]  [<ffffffffa0043e70>] ? link_state_event+0x4e0/0x4e0 [tipc]
[  384.313290]  [<ffffffff81712890>] _raw_spin_lock_bh+0x40/0x80
[  384.313290]  [<ffffffffa0043e8c>] ? link_timeout+0x1c/0x170 [tipc]
[  384.313290]  [<ffffffffa0043e8c>] link_timeout+0x1c/0x170 [tipc]
[  384.313290]  [<ffffffff810c4698>] call_timer_fn+0xb8/0x490
[  384.313290]  [<ffffffff810c45e0>] ? process_timeout+0x10/0x10
[  384.313290]  [<ffffffff810c5a2c>] run_timer_softirq+0x21c/0x420
[  384.313290]  [<ffffffffa0043e70>] ? link_state_event+0x4e0/0x4e0 [tipc]
[  384.313290]  [<ffffffff8105a954>] __do_softirq+0xf4/0x630
[  384.313290]  [<ffffffff8105afdd>] irq_exit+0x5d/0x60
[  384.313290]  [<ffffffff8103ade1>] smp_apic_timer_interrupt+0x41/0x50
[  384.313290]  [<ffffffff817144a0>] apic_timer_interrupt+0x70/0x80
[  384.313290]  <EOI>  [<ffffffff8100db10>] ? default_idle+0x20/0x210
[  384.313290]  [<ffffffff8100db0e>] ? default_idle+0x1e/0x210
[  384.313290]  [<ffffffff8100e61a>] arch_cpu_idle+0xa/0x10
[  384.313290]  [<ffffffff81099803>] cpu_startup_entry+0x2c3/0x530
[  384.313290]  [<ffffffff810d2893>] ? clockevents_register_device+0x113/0x200
[  384.313290]  [<ffffffff81038b0f>] start_secondary+0x13f/0x170

Fixes: 8a0f6ebe84 ("tipc: involve reference counter for node structure")
Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-23 11:50:34 -04:00
Erik Hugne 9871b27f67 tipc: fix random link reset problem
In the function tipc_sk_rcv(), the stack variable 'err'
is only initialized to TIPC_ERR_NO_PORT for the first
iteration over the link input queue. If a chain of messages
are received from a link, failure to lookup the socket for
any but the first message will cause the message to bounce back
out on a random link.
We fix this by properly initializing err.

Signed-off-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-23 11:50:34 -04:00
Ying Xue def81f69bf tipc: fix topology server broken issue
When a new topology server is launched in a new namespace, its
listening socket is inserted into the "init ns" namespace's socket
hash table rather than the one owned by the new namespace. Although
the socket's namespace is forcedly changed to the new namespace later,
the socket is still stored in the socket hash table of "init ns"
namespace. When a client created in the new namespace connects
its own topology server, the connection is failed as its server's
socket could not be found from its own namespace's socket table.

If __sock_create() instead of original sock_create_kern() is used
to create the server's socket through specifying an expected namesapce,
the socket will be inserted into the specified namespace's socket
table, thereby avoiding to the topology server broken issue.

Fixes: 76100a8a64 ("tipc: fix netns refcnt leak")

Reported-by: Erik Hugne <erik.hugne@ericsson.com>
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-23 11:50:34 -04:00
David Gibson 4fce14820c ibmveth: Fix off-by-one error in ibmveth_change_mtu()
AFAIK the PAPR document which defines the virtual device interface used by
the ibmveth driver doesn't specify a specific maximum MTU.  So, in the
ibmveth driver, the maximum allowed MTU is determined by the maximum
allocated buffer size of 64k (corresponding to one page in the common case)
minus the per-buffer overhead IBMVETH_BUFF_OH (which has value 22 for 14
bytes of ethernet header, plus 8 bytes for an opaque handle).

This suggests a maximum allowable MTU of 65514 bytes, but in fact the
driver only permits a maximum MTU of 65513.  This is because there is a <
instead of an <= in ibmveth_change_mtu(), which only permits an MTU which
is strictly smaller than the buffer size, rather than allowing the buffer
to be completely filled.

This patch fixes the buglet.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-23 11:42:19 -04:00
Johannes Berg ec65aafb9e netdev_alloc_pcpu_stats: use less common iterator variable
With the CPU iteration variable called 'i', it's relatively easy
to have variable shadowing which sparse will warn about. Avoid
that by renaming the variable to __cpu which is less likely to
be used in the surrounding context.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-23 11:38:14 -04:00
Rickard Strandqvist b9061ef5d4 arch: blackfin: kernel: kgdb: Remove unused function
Remove the function kgdb_post_primary_code() that is not used anywhere.

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Acked-by: Sonic Zhang <sonic.zhang@analog.com>
2015-04-23 22:56:54 +08:00
Harald Freudenberger 57127645d7 s390/zcrypt: Introduce new SHA-512 based Pseudo Random Generator.
Rework of the prandom device with introduction of a new SHA-512 based
NIST SP 800-90 conform deterministic random bit generator.

Signed-off-by: Harald Freudenberger <freude@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-23 16:56:21 +02:00
Martin Schwidefsky a1c843b825 s390/mm: change swap pte encoding and pgtable cleanup
After the file ptes have been removed the bit combination used to
encode non-linear mappings can be reused for the swap ptes. This
frees up a precious pte software bit. Reflect the change in the
swap encoding in the comments and do some cleanup while we are
at it.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-23 16:56:20 +02:00
Martin Schwidefsky b7d14f3a92 s390/mm: correct transfer of dirty & young bits in __pmd_to_pte
The dirty & young bit from the pmd is not copied correctly to the
pseudo pte in __pmd_to_pte. In fact it is not copied at all, the
bits get lost. As the old style huge page currently does not need
the dirty & young information this has no effect, but may be needed
in the future.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-23 16:56:20 +02:00
Heiko Carstens 77a87f0cb1 s390/bpf: add dependency to z196 features
The new ebpf code uses e.g. the laal instruction which is part of the
interlocked-access facility 1 which again was introduced with z196.

So we must make sure the ebpf code generator depends on MARCH_Z196_FEATURES.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
2015-04-23 16:55:50 +02:00
Christophe Jaillet 0a7c501e67 s390/3215: free memory in error path
If one memory allocation fails, there is a memory leak.

Signed-off-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-23 16:55:50 +02:00
Martin Schwidefsky 0b46e0a3ec s390/kvm: remove delayed reallocation of page tables for KVM
Replacing a 2K page table with a 4K page table while a VMA is active
for the affected memory region is fundamentally broken. Rip out the
page table reallocation code and replace it with a simple system
control 'vm.allocate_pgste'. If the system control is set the page
tables for all processes are allocated as full 4K pages, even for
processes that do not need it.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-23 16:55:49 +02:00
Martin Schwidefsky 7e01b5acd8 kexec: allocate the kexec control page with KEXEC_CONTROL_MEMORY_GFP
Introduce KEXEC_CONTROL_MEMORY_GFP to allow the architecture code
to override the gfp flags of the allocation for the kexec control
page. The loop in kimage_alloc_normal_control_pages allocates pages
with GFP_KERNEL until a page is found that happens to have an
address smaller than the KEXEC_CONTROL_MEMORY_LIMIT. On systems
with a large memory size but a small KEXEC_CONTROL_MEMORY_LIMIT
the loop will keep allocating memory until the oom killer steps in.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2015-04-23 16:52:01 +02:00
Steven Miao 37557178a0 dma: fix build error after update to v3.19
Signed-off-by: Steven Miao <realmz6@gmail.com>
2015-04-23 21:34:33 +08:00
Steven Miao 1a3372bc52 blackfin: io: define __raw_readx/writex with bfin_readx/writex
Signed-off-by: Steven Miao <realmz6@gmail.com>
2015-04-23 21:34:33 +08:00
Scott Jiang b3df664b85 bf609: add resources for lcd nl8048
Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
Signed-off-by: Steven Miao <realmz6@gmail.com>
2015-04-23 21:34:32 +08:00
Aaron Wu ef7dcaf1e7 pm: sometimes wake up from suspend to RAM would fail
Sometimes it fails to wake up from suspend to RAM, this is because
we would flush the data cache by assemble command FLUSHINV before
suspend to RAM, and there is a delay between this command execution
and cache flush completion. Add a 1uS delay to works around this.

Signed-off-by: Aaron Wu <Aaron.wu@analog.com>
2015-04-23 21:34:32 +08:00
Andre Wolokita bb717b33aa debug-mmrs: Eliminate all traces of the USB_PHY_TEST MMR
Interacting with the USB_PHY_TEST MMR through debugfs was causing wide-spread
chaos in the realm (kernel panic). Expunge all references to this demonic
register.

Signed-off-by: Andre Wolokita <Andre.Wolokita@analog.com>
2015-04-23 21:34:31 +08:00
Sonic Zhang f7fee0366c bf609: remove softswitch i2c configuration from adv7842 and adv7511 platform data
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2015-04-23 21:34:30 +08:00
Sonic Zhang 199aad16d5 bf609: add platform data for soft switch devices on the video extenders
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2015-04-23 21:34:29 +08:00
Sonic Zhang 707e6f0bc4 bf609: enable soft switch gpio driver by default
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2015-04-23 21:34:29 +08:00
Sonic Zhang ea9b706b86 bf609: add gpio soft switch platform data for mcp23017 i2c devices
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2015-04-23 21:34:28 +08:00
Scott Jiang 374feb1f04 bf609: use new SND_BF6XX_PCM to choose audio pcm driver
There is a new bf6xx audio dma driver, so we don't reuse
bf5xx i2s pcm driver again.

Signed-off-by: Scott Jiang <scott.jiang.linux@gmail.com>
2015-04-23 21:34:27 +08:00
Sonic Zhang a0f4207d03 bug[220] kgdb: change the smp cross core function entry
Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
2015-04-23 21:34:26 +08:00
Rickard Strandqvist 4eb147c83f arch: blackfin: kernel: setup.c: Cleaning up missing null-terminate in conjunction with strncpy
Replacing strncpy with strlcpy to avoid strings that lacks null terminate.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Steven Miao <realmz6@gmail.com>
2015-04-23 21:34:25 +08:00
Steven Miao 2fcc440ca6 blackfin: defconfigs: cleanup unused CONFIG_MTD_CHAR, add MTD_SPI_NOR for BF537-STAMP
Signed-off-by: Steven Miao <realmz6@gmail.com>
2015-04-23 21:34:23 +08:00
Shobhit Kumar c264f1110d pwm: Remove __init initializer for pwm_add_table()
For platforms that don't support DT, some early MFD modules can register
lookup tables. Remove the __init annotation so that this works. This is
similar to gpio_add_lookup_table() which allows late additions.

CC: Samuel Ortiz <sameo@linux.intel.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Shobhit Kumar <shobhit.kumar@intel.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
2015-04-23 14:50:52 +02:00