linux-drm-fsl-dcu.git
12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Mon, 21 May 2012 01:53:04 +0000 (21:53 -0400)]
Merge git://git./linux/kernel/git/davem/net

12 years agoLinux 3.4
Linus Torvalds [Sun, 20 May 2012 22:29:13 +0000 (15:29 -0700)]
Linux 3.4

12 years agoipv6/exthdrs: strict Pad1 and PadN check
Eldad Zack [Sun, 20 May 2012 01:59:33 +0000 (01:59 +0000)]
ipv6/exthdrs: strict Pad1 and PadN check

The following tightens the padding check from commit
c1412fce7eccae62b4de22494f6ab3ff8a90c0c6 :

* Take into account combinations of consecutive Pad1 and PadN.

* Catch the corner case of when only padding is present in the
  header, when the extention header length is 0 (i.e., 8 bytes).
  In this case, the header would have exactly 6 bytes of padding:

+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
:  Next Header  : Hdr Ext Len=0 :                               :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+                               +
:                        Padding (Pad1 or PadN)                 :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoUSB: qmi_wwan: Add ZTE (Vodafone) K3520-Z
Andrew Bird (Sphere Systems) [Sat, 19 May 2012 22:28:38 +0000 (22:28 +0000)]
USB: qmi_wwan: Add ZTE (Vodafone) K3520-Z

Signed-off-by: Andrew Bird <ajb@spheresystems.co.uk>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoUSB: qmi_wwan: Add ZTE (Vodafone) K3765-Z
Andrew Bird (Sphere Systems) [Sat, 19 May 2012 22:28:37 +0000 (22:28 +0000)]
USB: qmi_wwan: Add ZTE (Vodafone) K3765-Z

Add the ZTE (Vodafone) K3765-Z to the whitelist. This requires the
previous patch to make the whitelist with forced interface 4 generic
or the device fails to initialise. After applying this patch and
loading the Option driver without usb-modeswitch's bind all
interfaces trick, a wwan0 net interface and /dev/cdc-wdm0 device
file were created. Using Bjorn Mork's perl connection script a
connection was made to a mobile network using QMI and the network
interface's IPv4 address was configured OK.

Signed-off-by: Andrew Bird <ajb@spheresystems.co.uk>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoUSB: qmi_wwan: Make forced int 4 whitelist generic
Andrew Bird (Sphere Systems) [Sat, 19 May 2012 22:28:36 +0000 (22:28 +0000)]
USB: qmi_wwan: Make forced int 4 whitelist generic

Change the forced interface 4 whitelist to use the generic shared
binder instead of the Gobi specific one. Certain ZTE devices
(K3520-Z & K3765-Z) don't work with the Gobi version, but function
quite happily with the generic. This has been tested with the following
devices:
K3520-Z
K3565-Z
K3765-Z
K4505-Z
It hasn't been tested with the ZTE MF820D, which is the only other
device that uses this whitelist at present. Although Bjorn doesn't
expect any problems, any testing with that device would be appreciated.

Signed-off-by: Andrew Bird <ajb@spheresystems.co.uk>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet/ipv4: replace simple_strtoul with kstrtoul
Eldad Zack [Sat, 19 May 2012 14:13:18 +0000 (14:13 +0000)]
net/ipv4: replace simple_strtoul with kstrtoul

Replace simple_strtoul with kstrtoul in three similar occurrences, all setup
handlers:
* route.c: set_rhash_entries
* tcp.c: set_thash_entries
* udp.c: set_uhash_entries

Also check if the conversion failed.

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet/ipv4/ipconfig: neaten __setup placement
Eldad Zack [Sat, 19 May 2012 14:04:39 +0000 (14:04 +0000)]
net/ipv4/ipconfig: neaten __setup placement

The __setup macro should follow the corresponding setup handler.

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: qmi_wwan: Add Vodafone/Huawei K5005 support
Bjørn Mork [Sat, 19 May 2012 07:20:31 +0000 (07:20 +0000)]
net: qmi_wwan: Add Vodafone/Huawei K5005 support

Tested-by: Thomas Schäfer <tschaefer@t-online.de>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: cdc_ether: Add ZTE WWAN matches before generic Ethernet
Andrew Bird (Sphere Systems) [Sat, 19 May 2012 03:56:07 +0000 (03:56 +0000)]
net: cdc_ether: Add ZTE WWAN matches before generic Ethernet

Some ZTE WWAN devices have generic CDC Ether descriptors. Add those
into the whitelist so that we get FLAG_WWAN on the interface

Signed-off-by: Andrew Bird <ajb@spheresystems.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: use skb coalescing in reassembly
Eric Dumazet [Sat, 19 May 2012 03:02:35 +0000 (03:02 +0000)]
ipv6: use skb coalescing in reassembly

ip6_frag_reasm() can use skb_try_coalesce() to build optimized skb,
reducing memory used by them (truesize), and reducing number of cache
line misses and overhead for the consumer.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv4: use skb coalescing in defragmentation
Eric Dumazet [Sat, 19 May 2012 03:02:20 +0000 (03:02 +0000)]
ipv4: use skb coalescing in defragmentation

ip_frag_reasm() can use skb_try_coalesce() to build optimized skb,
reducing memory used by them (truesize), and reducing number of cache
line misses and overhead for the consumer.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: introduce skb_try_coalesce()
Eric Dumazet [Sat, 19 May 2012 03:02:02 +0000 (03:02 +0000)]
net: introduce skb_try_coalesce()

Move tcp_try_coalesce() protocol independent part to
skb_try_coalesce().

skb_try_coalesce() can be used in IPv4 defrag and IPv6 reassembly,
to build optimized skbs (less sk_buff, and possibly less 'headers')

skb_try_coalesce() is zero copy, unless the copy can fit in destination
header (its a rare case)

kfree_skb_partial() is also moved to net/core/skbuff.c and exported,
because IPv6 will need it in patch (ipv6: use skb coalescing in
reassembly).

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet:ipv6:fixed space issues relating to operators.
Jeffrin Jose [Sat, 19 May 2012 01:59:04 +0000 (01:59 +0000)]
net:ipv6:fixed space issues relating to operators.

Fixed space issues relating to operators found by
checkpatch.pl tool in net/ipv6/udp.c

Signed-off-by: Jeffrin Jose <ahiliation@yahoo.co.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet:ipv6:fixed a trailing white space issue.
Jeffrin Jose [Sat, 19 May 2012 01:45:21 +0000 (01:45 +0000)]
net:ipv6:fixed a trailing white space issue.

Fixed a trailing white space issue found by
checkpatch.pl tool in net/ipv6/udp.c

Signed-off-by: Jeffrin Jose <ahiliation@yahoo.co.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6
Linus Torvalds [Sat, 19 May 2012 22:30:15 +0000 (15:30 -0700)]
Merge tag 'parisc-fixes' of git://git./linux/kernel/git/jejb/parisc-2.6

Pull PA-RISC fixes from James Bottomley:
 "This is a set of three bug fixes that gets parisc running again on
  systems with PA1.1 processors.

  Two fix regressions introduced in 2.6.39 and one fixes a prefetch bug
  that only affects PA7300LC processors.  We also have another pending
  fix to do with the sectional arrangement of vmlinux.lds, but there's a
  query on it during testing on one particular system type, so I'll hold
  off sending it in for now."

* tag 'parisc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/parisc-2.6:
  [PARISC] fix panic on prefetch(NULL) on PA7300LC
  [PARISC] fix crash in flush_icache_page_asm on PA1.1
  [PARISC] fix PA1.1 oops on boot

12 years agoMerge branch 'x86/ld-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Linus Torvalds [Sat, 19 May 2012 22:28:22 +0000 (15:28 -0700)]
Merge branch 'x86/ld-fix' of git://git./linux/kernel/git/tip/tip

Pull x86 linker bug workarounds from Peter Anvin.

GNU ld-2.22.52.0.[12] (*) has an unfortunate bug where it incorrectly
turns certain relocation entries absolute.  Section-relative symbols
that are part of otherwise empty sections are silently changed them to
absolute.  We rely on section-relative symbols staying section-relative,
and actually have several sections in the linker script solely for this
purpose.

See for example

   http://sourceware.org/bugzilla/show_bug.cgi?id=14052

We could just black-list the buggy linker, but it appears that it got
shipped in at least F17, and possibly other distros too, so it's sadly
not some rare unusual case.

This backports the workaround from the x86/trampoline branch, and as
Peter says: "This is not a minimal fix, not at all, but it is a tested
code base."

* 'x86/ld-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, relocs: When printing an error, say relative or absolute
  x86, relocs: Workaround for binutils 2.22.52.0.1 section bug
  x86, realmode: 16-bit real-mode code support for relocs tool

(*) That's a manly release numbering system. Stupid, sure. But manly.

12 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 19 May 2012 17:12:17 +0000 (10:12 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block layer fixes from Jens Axboe:
 "A few small, but important fixes.  Most of them are marked for stable
  as well

   - Fix failure to release a semaphore on error path in mtip32xx.
   - Fix crashable condition in bio_get_nr_vecs().
   - Don't mark end-of-disk buffers as mapped, limit it to i_size.
   - Fix for build problem with CONFIG_BLOCK=n on arm at least.
   - Fix for a buffer overlow on UUID partition printing.
   - Trivial removal of unused variables in dac960."

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: fix buffer overflow when printing partition UUIDs
  Fix blkdev.h build errors when BLOCK=n
  bio allocation failure due to bio_get_nr_vecs()
  block: don't mark buffers beyond end of disk as mapped
  mtip32xx: release the semaphore on an error path
  dac960: Remove unused variables from DAC960_CreateProcEntries()

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sat, 19 May 2012 17:10:59 +0000 (10:10 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull one more networking bug-fix from David Miller:
 "One last straggler.

  Eric Dumazet's pktgen unload oops fix was not entirely complete, but
  all the cases should be handled properly now....  fingers crossed."

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  pktgen: fix module unload for good

12 years agomemcg,thp: fix res_counter:96 regression
Hugh Dickins [Fri, 18 May 2012 18:28:34 +0000 (11:28 -0700)]
memcg,thp: fix res_counter:96 regression

Occasionally, testing memcg's move_charge_at_immigrate on rc7 shows
a flurry of hundreds of warnings at kernel/res_counter.c:96, where
res_counter_uncharge_locked() does WARN_ON(counter->usage < val).

The first trace of each flurry implicates __mem_cgroup_cancel_charge()
of mc.precharge, and an audit of mc.precharge handling points to
mem_cgroup_move_charge_pte_range()'s THP handling in commit 12724850e806
("memcg: avoid THP split in task migration").

Checking !mc.precharge is good everywhere else, when a single page is to
be charged; but here the "mc.precharge -= HPAGE_PMD_NR" likely to
follow, is liable to result in underflow (a lot can change since the
precharge was estimated).

Simply check against HPAGE_PMD_NR: there's probably a better
alternative, trying precharge for more, splitting if unsuccessful; but
this one-liner is safer for now - no kernel/res_counter.c:96 warnings
seen in 26 hours.

Signed-off-by: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoipv6: disable GSO on sockets hitting dst_allfrag
Eric Dumazet [Fri, 18 May 2012 21:51:44 +0000 (21:51 +0000)]
ipv6: disable GSO on sockets hitting dst_allfrag

If the allfrag feature has been set on a host route (due to an ICMPv6
Packet Too Big received indicating a MTU of less than 1280), we hit a
very slow behavior in TCP stack, because all big packets are dropped and
only a retransmit timer is able to push one MSS frame every 200 ms.

One way to handle this is to disable GSO on the socket the first time a
super packet is dropped. Adding a specific dst_allfrag() in the fast
path is probably overkill since the dst_allfrag() case almost never
happen.

Result on netperf TCP_STREAM, one flow :

Before : 60 kbit/sec
After : 1.6 Gbit/sec

Reported-by: Tore Anderson <tore@fud.no>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Tore Anderson <tore@fud.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agotg3: use netdev_alloc_frag() API
Eric Dumazet [Fri, 18 May 2012 21:33:39 +0000 (21:33 +0000)]
tg3: use netdev_alloc_frag() API

Update our reference driver to use netdev_alloc_frag() API instead of
the temporary custom allocator I introduced in commit 8d4057a938
(tg3: provide frags as skb head)

This removes the memory leak we had, since we could leak one page at
device dismantle.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Matt Carlson <mcarlson@broadcom.com>
Cc: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: napi_frags_skb() is static
Eric Dumazet [Fri, 18 May 2012 20:49:06 +0000 (20:49 +0000)]
net: napi_frags_skb() is static

No need to export napi_frags_skb()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoppp: avoid false drop_monitor false positives
Eric Dumazet [Fri, 18 May 2012 20:23:00 +0000 (20:23 +0000)]
ppp: avoid false drop_monitor false positives

Call consume_skb() in place of kfree_skb() were appropriate.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: bool/const conversions phase2
Eric Dumazet [Fri, 18 May 2012 18:57:34 +0000 (18:57 +0000)]
ipv6: bool/const conversions phase2

Mostly bool conversions, some inline removals and const additions.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipx: Remove spurious NULL checking in ipx_ioctl().
David S. Miller [Sat, 19 May 2012 04:51:04 +0000 (00:51 -0400)]
ipx: Remove spurious NULL checking in ipx_ioctl().

We already unconditionally dereference 'sk' via lock_sock(sk) earlier
in this function, and our caller (sock_do_ioctl()) makes takes similar
liberties.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: ip6_fragment() should check CHECKSUM_PARTIAL
Eric Dumazet [Fri, 18 May 2012 11:02:15 +0000 (11:02 +0000)]
ipv6: ip6_fragment() should check CHECKSUM_PARTIAL

Quoting Tore Anderson from :

If the allfrag feature has been set on a host route (due to an ICMPv6
Packet Too Big received indicating a MTU of less than 1280),
TCP SYN/ACK packets to that destination appears to get an incorrect
TCP checksum. This in turn means they are thrown away as invalid.

In the case of an IPv4 client behind a link with a MTU of less than
1260, accessing an IPv6 server through a stateless translator,
this means that the client can only download a single large file
from the server, because once it is in the server's routing cache
with the allfrag feature set, new TCP connections can no longer
be established.

</endquote>

It appears ip6_fragment() doesn't handle CHECKSUM_PARTIAL properly.

As network drivers are not prepared to fetch correct transport header, a
safe fix is to call skb_checksum_help() before fragmenting packet.

Reported-by: Tore Anderson <tore@fud.no>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Tested-by: Tore Anderson <tore@fud.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocirrus: cs89x0: Remove function prototypes and reorder declarations
Joe Perches [Fri, 18 May 2012 12:56:31 +0000 (12:56 +0000)]
cirrus: cs89x0: Remove function prototypes and reorder declarations

Move blocks of code around to avoid function prototypes.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocirrus: cs89x0: Neaten debugging and logging
Joe Perches [Fri, 18 May 2012 12:56:30 +0000 (12:56 +0000)]
cirrus: cs89x0: Neaten debugging and logging

Introduce and use a debug macro to test and print.
Convert printks to pr_<level>.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocirrus: cs89x0: Code neatening
Joe Perches [Fri, 18 May 2012 12:56:29 +0000 (12:56 +0000)]
cirrus: cs89x0: Code neatening

Just some stylings.

Use #include <linux... not #include <asm...
Convert a test and print to a printk_once.
Combine an "if (foo) { if (bar) {" to single "if (foo && bar) {"
to save an indent level.
Convert single line "if (foo) bar;" to multiple lines.
Move some braces.
Align some long lines a bit better.

Long lines and printks with KERN_ checkpatch complaints
still exist.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocirrus: cs89x0: Convert printks to pr_<level>
Joe Perches [Fri, 18 May 2012 12:56:28 +0000 (12:56 +0000)]
cirrus: cs89x0: Convert printks to pr_<level>

Use more current logging styles.

Add pr_fmt.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agocirrus: cs89x0: Code style neatening
Joe Perches [Fri, 18 May 2012 12:56:27 +0000 (12:56 +0000)]
cirrus: cs89x0: Code style neatening

Neaten the comments and reflow the code without
changing anything other than whitespace.

git diff -w shows just comment neatening and a few
line removals.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agox86, relocs: When printing an error, say relative or absolute
H. Peter Anvin [Fri, 18 May 2012 16:52:01 +0000 (09:52 -0700)]
x86, relocs: When printing an error, say relative or absolute

When the relocs tool throws an error, let the error message say if it
is an absolute or relative symbol.  This should make it a lot more
clear what action the programmer needs to take and should help us find
the reason if additional symbol bugs show up.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: <stable@vger.kernel.org>
12 years agox86, relocs: Workaround for binutils 2.22.52.0.1 section bug
H. Peter Anvin [Fri, 18 May 2012 07:24:09 +0000 (00:24 -0700)]
x86, relocs: Workaround for binutils 2.22.52.0.1 section bug

GNU ld 2.22.52.0.1 has a bug that it blindly changes symbols from
section-relative to absolute if they are in a section of zero length.
This turns the symbols __init_begin and __init_end into absolute
symbols.  Let the relocs program know that those should be treated as
relative symbols.

Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: H.J. Lu <hjl.tools@gmail.com>
Cc: <stable@vger.kernel.org>
Cc: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
12 years agox86, realmode: 16-bit real-mode code support for relocs tool
H. Peter Anvin [Tue, 8 May 2012 18:22:24 +0000 (21:22 +0300)]
x86, realmode: 16-bit real-mode code support for relocs tool

A new option is added to the relocs tool called '--realmode'.
This option causes the generation of 16-bit segment relocations
and 32-bit linear relocations for the real-mode code. When
the real-mode code is moved to the low-memory during kernel
initialization, these relocation entries can be used to
relocate the code properly.

In the assembly code 16-bit segment relocations must be relative
to the 'real_mode_seg' absolute symbol. Linear relocations must be
relative to a symbol prefixed with 'pa_'.

16-bit segment relocation is used to load cs:ip in 16-bit code.
Linear relocations are used in the 32-bit code for relocatable
data references. They are declared in the linker script of the
real-mode code.

The relocs tool is moved to arch/x86/tools/relocs.c, and added new
target archscripts that can be used to build scripts needed building
an architecture.  be compiled before building the arch/x86 tree.

[ hpa: accelerating this because it detects invalid absolute
  relocations, a serious bug in binutils 2.22.52.0.x which currently
  produces bad kernels. ]

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/1336501366-28617-2-git-send-email-jarkko.sakkinen@intel.com
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org>
12 years agoMerge tag 'dm-3.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm
Linus Torvalds [Sat, 19 May 2012 01:22:45 +0000 (18:22 -0700)]
Merge tag 'dm-3.4-fixes-2' of git://git./linux/kernel/git/agk/linux-dm

Pull a dm fix from Alasdair G Kergon:
 "A fix to the thin provisioning userspace interface."

* tag 'dm-3.4-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
  dm thin: fix table output when pool target disables discard passdown internally

12 years agodm thin: fix table output when pool target disables discard passdown internally
Mike Snitzer [Sat, 19 May 2012 00:01:01 +0000 (01:01 +0100)]
dm thin: fix table output when pool target disables discard passdown internally

When the thin pool target clears the discard_passdown parameter
internally, it incorrectly changes the table line reported to userspace.
This breaks dumb string comparisons on these table lines in generic
userspace device-mapper library code and leads to tables being reloaded
repeatedly when nothing is actually meant to be changing.

This patch corrects this by no longer changing the table line when
discard passdown was disabled.

We can still tell when discard passdown is overridden by looking for the
message "Discard unsupported by data device (sdX): Disabling discard passdown."

This automatic detection is also moved from the 'load' to the 'resume'
so that it is re-evaluated should the properties of underlying devices
change.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
12 years agoMerge tag 'md-3.4-fixes' of git://neil.brown.name/md
Linus Torvalds [Fri, 18 May 2012 23:19:59 +0000 (16:19 -0700)]
Merge tag 'md-3.4-fixes' of git://neil.brown.name/md

Pull one more md bugfix from NeilBrown:
 "Fix bug in recent fix to RAID10.

  Without this patch, recovery will crash"

* tag 'md-3.4-fixes' of git://neil.brown.name/md:
  md/raid10: fix transcription error in calc_sectors conversion.

12 years agoMerge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux...
Linus Torvalds [Fri, 18 May 2012 23:16:42 +0000 (16:16 -0700)]
Merge branch 'stable' of git://git./linux/kernel/git/cmetcalf/linux-tile

Pull tile tree bugfix from Chris Metcalf:
 "This fixes a security vulnerability (and correctness bug) in tilegx"

* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  tilegx: enable SYSCALL_WRAPPERS support

12 years agomd/raid10: fix transcription error in calc_sectors conversion.
NeilBrown [Fri, 18 May 2012 23:01:13 +0000 (09:01 +1000)]
md/raid10: fix transcription error in calc_sectors conversion.

The old code was
sector_div(stride, fc);
the new code was
sector_dir(size, conf->near_copies);

'size' is right (the stride various wasn't really needed), but
'fc' means 'far_copies', and that is an important difference.

Signed-off-by: NeilBrown <neilb@suse.de>
12 years agoMerge branch 'akpm' (Andrew's patch-bomb)
Linus Torvalds [Fri, 18 May 2012 22:56:25 +0000 (15:56 -0700)]
Merge branch 'akpm' (Andrew's patch-bomb)

Merge misc fixes from Andrew Morton.

* emailed from Andrew Morton <akpm@linux-foundation.org>: (4 patches)
  frv: delete incorrect task prototypes causing compile fail
  slub: missing test for partial pages flush work in flush_all()
  fs, proc: fix ABBA deadlock in case of execution attempt of map_files/ entries
  drivers/rtc/rtc-pl031.c: configure correct wday for 2000-01-01

12 years agoproc: move fd symlink i_mode calculations into tid_fd_revalidate()
Linus Torvalds [Fri, 18 May 2012 18:32:15 +0000 (11:32 -0700)]
proc: move fd symlink i_mode calculations into tid_fd_revalidate()

Instead of doing the i_mode calculations at proc_fd_instantiate() time,
move them into tid_fd_revalidate(), which is where the other inode state
(notably uid/gid information) is updated too.

Otherwise we'll end up with stale i_mode information if an fd is re-used
while the dentry still hangs around.  Not that anything really *cares*
(symlink permissions don't really matter), but Tetsuo Handa noticed that
the owner read/write bits don't always match the state of the
readability of the file descriptor, and we _used_ to get this right a
long time ago in a galaxy far, far away.

Besides, aside from fixing an ugly detail (that has apparently been this
way since commit 61a28784028e: "proc: Remove the hard coded inode
numbers" in 2006), this removes more lines of code than it adds.  And it
just makes sense to update i_mode in the same place we update i_uid/gid.

Al Viro correctly points out that we could just do the inode fill in the
inode iops ->getattr() function instead.  However, that does require
somewhat slightly more invasive changes, and adds yet *another* lookup
of the file descriptor.  We need to do the revalidate() for other
reasons anyway, and have the file descriptor handy, so we might as well
fill in the information at this point.

Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Eric Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agopktgen: fix module unload for good
Eric Dumazet [Thu, 17 May 2012 23:52:26 +0000 (23:52 +0000)]
pktgen: fix module unload for good

commit c57b5468406 (pktgen: fix crash at module unload) did a very poor
job with list primitives.

1) list_splice() arguments were in the wrong order

2) list_splice(list, head) has undefined behavior if head is not
initialized.

3) We should use the list_splice_init() variant to clear pktgen_threads
list.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agobe2net: Fix to allow get/set of debug levels in the firmware.
Somnath Kotur [Thu, 17 May 2012 22:59:03 +0000 (22:59 +0000)]
be2net: Fix to allow get/set of debug levels in the firmware.

Patch re-spin.
Incorporated review comments by Ben Hutchings.

Signed-off-by: Suresh Reddy <suresh.reddy@emulex.com>
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Acked-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agotilegx: enable SYSCALL_WRAPPERS support
Chris Metcalf [Fri, 18 May 2012 17:33:24 +0000 (13:33 -0400)]
tilegx: enable SYSCALL_WRAPPERS support

Some discussion with the glibc mailing lists revealed that this was
necessary for 64-bit platforms with MIPS-like sign-extension rules
for 32-bit values.  The original symptom was that passing (uid_t)-1 to
setreuid() was failing in programs linked -pthread because of the "setxid"
mechanism for passing setxid-type function arguments to the syscall code.
SYSCALL_WRAPPERS handles ensuring that all syscall arguments end up with
proper sign-extension and is thus the appropriate fix for this problem.

On other platforms (s390, powerpc, sparc64, and mips) this was fixed
in 2.6.28.6.  The general issue is tracked as CVE-2009-0029.

Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
12 years agoipv6: remove csummode in ip6_append_data()
Eric Dumazet [Fri, 18 May 2012 05:37:56 +0000 (05:37 +0000)]
ipv6: remove csummode in ip6_append_data()

csummode variable is always CHECKSUM_NONE in ip6_append_data()

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: introduce netdev_alloc_frag()
Eric Dumazet [Fri, 18 May 2012 05:12:12 +0000 (05:12 +0000)]
net: introduce netdev_alloc_frag()

Fix two issues introduced in commit a1c7fff7e18f5
( net: netdev_alloc_skb() use build_skb() )

- Must be IRQ safe (non NAPI drivers can use it)
- Must not leak the frag if build_skb() fails to allocate sk_buff

This patch introduces netdev_alloc_frag() for drivers willing to
use build_skb() instead of __netdev_alloc_skb() variants.

Factorize code so that :
__dev_alloc_skb() is a wrapper around __netdev_alloc_skb(), and
dev_alloc_skb() a wrapper around netdev_alloc_skb()

Use __GFP_COLD flag.

Almost all network drivers now benefit from skb->head_frag
infrastructure.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoiwlwifi: dont pull too much payload in skb head
Eric Dumazet [Fri, 18 May 2012 04:48:33 +0000 (04:48 +0000)]
iwlwifi: dont pull too much payload in skb head

As iwlwifi use fat skbs, it should not pull too much data in skb->head,
and particularly no tcp data payload, or splice() is slower, and TCP
coalescing is disabled. Copying payload to userland also involves at
least two copies (part from header, part from fragment)

Each layer will pull its header from the fragment as needed.

(on 64bit arches, skb_tailroom(skb) at this point is 192 bytes)

With this patch applied, I have a major reduction of collapsed/pruned
TCP packets, a nice increase of TCPRcvCoalesce counter, and overall
better Internet User experience.

Small packets are still using a fragless skb, so that page can be reused
by the driver.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Johannes Berg <johannes.berg@intel.com>
Cc: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge tag 'linus-mce-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras
Linus Torvalds [Fri, 18 May 2012 16:42:20 +0000 (09:42 -0700)]
Merge tag 'linus-mce-fix' of git://git./linux/kernel/git/ras/ras

Pull a machine check recovery fix from Tony Luck.

I really don't like how the MCE code does some of the things it does,
but this does seem to be an improvement.

* tag 'linus-mce-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
  x86/mce: Only restart instruction after machine check recovery if it is safe

12 years agoipv6: bool conversions phase1
Eric Dumazet [Fri, 18 May 2012 06:14:11 +0000 (08:14 +0200)]
ipv6: bool conversions phase1

ipv6_opt_accepted() returns a bool, and can use const pointers

ipv6_addr_equal(), ipv6_addr_any(), ipv6_addr_loopback(),
ipv6_addr_orchid() return a bool.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoip_frag: struct inet_frags match() method returns a bool
Eric Dumazet [Fri, 18 May 2012 03:57:13 +0000 (05:57 +0200)]
ip_frag: struct inet_frags match() method returns a bool

- match() method returns a boolean
- return (A && B && C && D) -> return A && B && C && D
- fix indentation

Signed-off-by: Eric Dumazet <edumazet@google.com>
12 years agonet: Remove netdevice ec_ptr, no longer used.
David S. Miller [Fri, 18 May 2012 05:39:43 +0000 (01:39 -0400)]
net: Remove netdevice ec_ptr, no longer used.

ECONET is gone, thus this can be deleted as well.

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoeconet: remove ancient bug ridden protocol
Stephen Hemminger [Fri, 18 May 2012 03:59:51 +0000 (20:59 -0700)]
econet: remove ancient bug ridden protocol

More spring cleaning!

The ancient Econet protocol should go. Most of the bug fixes in recent
years have been fixing security vulnerabilities. The hardware hasn't
been made since the 90s, it is only interesting as an archeological curiosity.

For the truly curious, or insomniac, go read up on it.
  http://en.wikipedia.org/wiki/Econet

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agofrv: delete incorrect task prototypes causing compile fail
Paul Gortmaker [Fri, 18 May 2012 00:03:26 +0000 (17:03 -0700)]
frv: delete incorrect task prototypes causing compile fail

Commit 41101809a865 ("fork: Provide weak arch_release_[task_struct|
thread_info] functions") in -tip highlights a problem in the frv arch,
where it has needles prototypes for alloc_task_struct_node and
free_task_struct.  This now shows up as:

  kernel/fork.c:120:66: error: static declaration of 'alloc_task_struct_node' follows non-static declaration
  kernel/fork.c:127:51: error: static declaration of 'free_task_struct' follows non-static declaration

since that commit turned them into real functions.  Since arch/frv does
does not define define __HAVE_ARCH_TASK_STRUCT_ALLOCATOR (i.e.  it just
uses the generic ones) it shouldn't list these at all.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoslub: missing test for partial pages flush work in flush_all()
majianpeng [Fri, 18 May 2012 00:03:26 +0000 (17:03 -0700)]
slub: missing test for partial pages flush work in flush_all()

I found some kernel messages such as:

    SLUB raid5-md127: kmem_cache_destroy called for cache that still has objects.
    Pid: 6143, comm: mdadm Tainted: G           O 3.4.0-rc6+        #75
    Call Trace:
    kmem_cache_destroy+0x328/0x400
    free_conf+0x2d/0xf0 [raid456]
    stop+0x41/0x60 [raid456]
    md_stop+0x1a/0x60 [md_mod]
    do_md_stop+0x74/0x470 [md_mod]
    md_ioctl+0xff/0x11f0 [md_mod]
    blkdev_ioctl+0xd8/0x7a0
    block_ioctl+0x3b/0x40
    do_vfs_ioctl+0x96/0x560
    sys_ioctl+0x91/0xa0
    system_call_fastpath+0x16/0x1b

Then using kmemleak I found these messages:

    unreferenced object 0xffff8800b6db7380 (size 112):
      comm "mdadm", pid 5783, jiffies 4294810749 (age 90.589s)
      hex dump (first 32 bytes):
        01 01 db b6 ad 4e ad de ff ff ff ff ff ff ff ff  .....N..........
        ff ff ff ff ff ff ff ff 98 40 4a 82 ff ff ff ff  .........@J.....
      backtrace:
        kmemleak_alloc+0x21/0x50
        kmem_cache_alloc+0xeb/0x1b0
        kmem_cache_open+0x2f1/0x430
        kmem_cache_create+0x158/0x320
        setup_conf+0x649/0x770 [raid456]
        run+0x68b/0x840 [raid456]
        md_run+0x529/0x940 [md_mod]
        do_md_run+0x18/0xc0 [md_mod]
        md_ioctl+0xba8/0x11f0 [md_mod]
        blkdev_ioctl+0xd8/0x7a0
        block_ioctl+0x3b/0x40
        do_vfs_ioctl+0x96/0x560
        sys_ioctl+0x91/0xa0
        system_call_fastpath+0x16/0x1b

This bug was introduced by commit a8364d5555b ("slub: only IPI CPUs that
have per cpu obj to flush"), which did not include checks for per cpu
partial pages being present on a cpu.

Signed-off-by: majianpeng <majianpeng@gmail.com>
Cc: Gilad Ben-Yossef <gilad@benyossef.com>
Acked-by: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Tested-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agofs, proc: fix ABBA deadlock in case of execution attempt of map_files/ entries
Cyrill Gorcunov [Fri, 18 May 2012 00:03:25 +0000 (17:03 -0700)]
fs, proc: fix ABBA deadlock in case of execution attempt of map_files/ entries

map_files/ entries are never supposed to be executed, still curious
minds might try to run them, which leads to the following deadlock

  ======================================================
  [ INFO: possible circular locking dependency detected ]
  3.4.0-rc4-24406-g841e6a6 #121 Not tainted
  -------------------------------------------------------
  bash/1556 is trying to acquire lock:
   (&sb->s_type->i_mutex_key#8){+.+.+.}, at: do_lookup+0x267/0x2b1

  but task is already holding lock:
   (&sig->cred_guard_mutex){+.+.+.}, at: prepare_bprm_creds+0x2d/0x69

  which lock already depends on the new lock.

  the existing dependency chain (in reverse order) is:

  -> #1 (&sig->cred_guard_mutex){+.+.+.}:
         validate_chain+0x444/0x4f4
         __lock_acquire+0x387/0x3f8
         lock_acquire+0x12b/0x158
         __mutex_lock_common+0x56/0x3a9
         mutex_lock_killable_nested+0x40/0x45
         lock_trace+0x24/0x59
         proc_map_files_lookup+0x5a/0x165
         __lookup_hash+0x52/0x73
         do_lookup+0x276/0x2b1
         walk_component+0x3d/0x114
         do_last+0xfc/0x540
         path_openat+0xd3/0x306
         do_filp_open+0x3d/0x89
         do_sys_open+0x74/0x106
         sys_open+0x21/0x23
         tracesys+0xdd/0xe2

  -> #0 (&sb->s_type->i_mutex_key#8){+.+.+.}:
         check_prev_add+0x6a/0x1ef
         validate_chain+0x444/0x4f4
         __lock_acquire+0x387/0x3f8
         lock_acquire+0x12b/0x158
         __mutex_lock_common+0x56/0x3a9
         mutex_lock_nested+0x40/0x45
         do_lookup+0x267/0x2b1
         walk_component+0x3d/0x114
         link_path_walk+0x1f9/0x48f
         path_openat+0xb6/0x306
         do_filp_open+0x3d/0x89
         open_exec+0x25/0xa0
         do_execve_common+0xea/0x2f9
         do_execve+0x43/0x45
         sys_execve+0x43/0x5a
         stub_execve+0x6c/0xc0

This is because prepare_bprm_creds grabs task->signal->cred_guard_mutex
and when do_lookup happens we try to grab task->signal->cred_guard_mutex
again in lock_trace.

Fix it using plain ptrace_may_access() helper in proc_map_files_lookup()
and in proc_map_files_readdir() instead of lock_trace(), the caller must
be CAP_SYS_ADMIN granted anyway.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Cc: Konstantin Khlebnikov <khlebnikov@openvz.org>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: Dave Jones <davej@redhat.com>
Cc: Vasiliy Kulikov <segoon@openwall.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agodrivers/rtc/rtc-pl031.c: configure correct wday for 2000-01-01
Rajkumar Kasirajan [Fri, 18 May 2012 00:03:24 +0000 (17:03 -0700)]
drivers/rtc/rtc-pl031.c: configure correct wday for 2000-01-01

The reset date of the ST Micro version of PL031 is 2000-01-01.  The
correct weekday for 2000-01-01 is saturday, but pl031 is initialized to
sunday.  This may lead to alarm malfunction, so configure the correct
wday if RTC_DR indicates reset.

Signed-off-by: Rajkumar Kasirajan <rajkumar.kasirajan@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Mattias Wallin <mattias.wallin@stericsson.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoMerge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Linus Torvalds [Thu, 17 May 2012 23:52:29 +0000 (16:52 -0700)]
Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm

Pull ARM fixes from Russell King:
 "Small set of fixes again."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7419/1: vfp: fix VFP flushing regression on sigreturn path
  ARM: 7418/1: LPAE: fix access flag setup in mem_type_table
  ARM: prevent VM_GROWSDOWN mmaps extending below FIRST_USER_ADDRESS
  ARM: 7417/1: vfp: ensure preemption is disabled when enabling VFP access

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Thu, 17 May 2012 23:30:26 +0000 (16:30 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull two networking fixes from David S. Miller:

1) Thanks to Willy Tarreau and Eric Dumazet, we've unlocked a bug that's
   been present in do_tcp_sendpages() since that function was written in
   2002.

   When we block to wait for memory we have to unconditionally try and
   push out pending TCP data, otherwise we can block for an unreasonably
   long amount of time.

2) Fix deadlock in e1000, fixes kernel bugzilla 43132

   From Tushar Dave.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  e1000: Prevent reset task killing itself.
  tcp: do_tcp_sendpages() must try to push data out on oom conditions

12 years agoACPI / PCI / PM: Fix device PM regression related to D3hot/D3cold
Rafael J. Wysocki [Thu, 17 May 2012 22:39:35 +0000 (00:39 +0200)]
ACPI / PCI / PM: Fix device PM regression related to D3hot/D3cold

Commit 1cc0c998fdf2 ("ACPI: Fix D3hot v D3cold confusion") introduced a
bug in __acpi_bus_set_power() and changed the behavior of
acpi_pci_set_power_state() in such a way that it generally doesn't work
as expected if PCI_D3hot is passed to it as the second argument.

First off, if ACPI_STATE_D3 (equal to ACPI_STATE_D3_COLD) is passed to
__acpi_bus_set_power() and the explicit_set flag is set for the D3cold
state, the function will try to execute AML method called "_PS4", which
doesn't exist.

Fix this by adding a check to ensure that the name of the AML method
to execute for transitions to ACPI_STATE_D3_COLD is correct in
__acpi_bus_set_power().  Also make sure that the explicit_set flag
for ACPI_STATE_D3_COLD will be set if _PS3 is present and modify
acpi_power_transition() to avoid accessing power resources for
ACPI_STATE_D3_COLD, because they don't exist.

Second, if PCI_D3hot is passed to acpi_pci_set_power_state() as the
target state, the function will request a transition to
ACPI_STATE_D3_HOT instead of ACPI_STATE_D3.  However,
ACPI_STATE_D3_HOT is now only marked as supported if the _PR3 AML
method is defined for the given device, which is rare.  This causes
problems to happen on systems where devices were successfully put
into ACPI D3 by pci_set_power_state(PCI_D3hot) which doesn't work
now.  In particular, some unused graphics adapters are not turned
off as a result.

To fix this issue restore the old behavior of
acpi_pci_set_power_state(), which is to request a transition to
ACPI_STATE_D3 (equal to ACPI_STATE_D3_COLD) if either PCI_D3hot or
PCI_D3cold is passed to it as the argument.

This approach is not ideal, because generally power should not
be removed from devices if PCI_D3hot is the target power state,
but since this behavior is relied on, we have no choice but to
restore it at the moment and spend more time on designing a
better solution in the future.

References: https://bugzilla.kernel.org/show_bug.cgi?id=43228
Reported-by: rocko <rockorequin@hotmail.com>
Reported-by: Cristian Rodríguez <crrodriguez@opensuse.org>
Reported-and-tested-by: Peter <lekensteyn@gmail.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
12 years agoCS89x0 : Use ioread16/iowrite16 on all platforms
Jaccon Bastiaansen [Thu, 17 May 2012 07:11:42 +0000 (07:11 +0000)]
CS89x0 : Use ioread16/iowrite16 on all platforms

The use of the inw/outw functions by the cs89x0 platform driver
results in NULL pointer references on ARM platforms and
platforms that do not provide ISA-style programmed I/O accessors.

Using inw/outw also accesses the wrong address space on platforms
that have a PCI I/O space that is not identity-mapped into the
physical address space.

Signed-off-by: Jaccon Bastiaansen <jaccon.bastiaansen@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agolapb: Neaten debugging
Joe Perches [Thu, 17 May 2012 10:25:49 +0000 (10:25 +0000)]
lapb: Neaten debugging

Enable dynamic debugging and remove a bunch of #ifdef/#endifs.

Add a lapb_dbg(level, fmt, ...) macro and replace the
printk(KERN_DEBUG uses.
Add pr_fmt and remove embedded prefixes.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoe1000: Prevent reset task killing itself.
Tushar Dave [Thu, 17 May 2012 01:04:50 +0000 (01:04 +0000)]
e1000: Prevent reset task killing itself.

Killing reset task while adapter is resetting causes deadlock.
Only kill reset task if adapter is not resetting.
Ref bug #43132 on bugzilla.kernel.org

CC: stable@vger.kernel.org
Signed-off-by: Tushar Dave <tushar.n.dave@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agotcp: do_tcp_sendpages() must try to push data out on oom conditions
Willy Tarreau [Thu, 17 May 2012 11:14:14 +0000 (11:14 +0000)]
tcp: do_tcp_sendpages() must try to push data out on oom conditions

Since recent changes on TCP splicing (starting with commits 2f533844
"tcp: allow splice() to build full TSO packets" and 35f9c09f "tcp:
tcp_sendpages() should call tcp_push() once"), I started seeing
massive stalls when forwarding traffic between two sockets using
splice() when pipe buffers were larger than socket buffers.

Latest changes (net: netdev_alloc_skb() use build_skb()) made the
problem even more apparent.

The reason seems to be that if do_tcp_sendpages() fails on out of memory
condition without being able to send at least one byte, tcp_push() is not
called and the buffers cannot be flushed.

After applying the attached patch, I cannot reproduce the stalls at all
and the data rate it perfectly stable and steady under any condition
which previously caused the problem to be permanent.

The issue seems to have been there since before the kernel migrated to
git, which makes me think that the stalls I occasionally experienced
with tux during stress-tests years ago were probably related to the
same issue.

This issue was first encountered on 3.0.31 and 3.2.17, so please backport
to -stable.

Signed-off-by: Willy Tarreau <w@1wt.eu>
Acked-by: Eric Dumazet <edumazet@google.com>
Cc: <stable@vger.kernel.org>
12 years agodrivers/net: delete all code/drivers depending on CONFIG_MCA
Paul Gortmaker [Wed, 16 May 2012 23:48:42 +0000 (19:48 -0400)]
drivers/net: delete all code/drivers depending on CONFIG_MCA

The support for CONFIG_MCA is being removed, since the 20
year old hardware simply isn't capable of meeting today's
software demands on CPU and memory resources.

This commit removes any MCA specific net drivers, and removes
any MCA specific probe/support code from drivers that were
doing a dual ISA/MCA role.

Cc: "David S. Miller" <davem@davemloft.net>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: netdev@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
12 years agoMerge branch '3.4-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target...
Linus Torvalds [Thu, 17 May 2012 20:25:17 +0000 (13:25 -0700)]
Merge branch '3.4-urgent' of git://git./linux/kernel/git/nab/target-pending

Pull two more target-core updates from Nicholas Bellinger:
 "The first patch addresses a SPC-2 reservations RELEASE bug in a
  special (iscsi specific) multi-ISID setup case that was allowing the
  same initiator to be able to incorrect release it's own reservation on
  a different SCSI path with enforce_pr_isid=1 operation.  This bug was
  caught by Bernhard Kohl.

  The second patch is to address a bug with FILEIO backends where the
  incorrect number of blocks for READ_CAPACITY was being reported after
  an underlying device-mapper block_device size change.  This patch uses
  now i_size_read() in fd_get_blocks() for FILEIO backends with an
  underlying block_device, instead of trying to determine this value at
  setup time during fd_create_virtdevice().  (hch CC'ed)

  Both are CC'ed to stable."

* '3.4-urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  target: Fix bug in handling of FILEIO + block_device resize ops
  target: Fix SPC-2 RELEASE bug for multi-session iSCSI client setups

12 years agonet/mlx4_en: num cores tx rings for every UP
Amir Vadai [Thu, 17 May 2012 00:58:10 +0000 (00:58 +0000)]
net/mlx4_en: num cores tx rings for every UP

Change the TX ring scheme such that the number of rings for untagged packets
and for tagged packets (per each of the vlan priorities) is the same, unlike
the current situation where for tagged traffic there's one ring per priority
and for untagged rings as the number of core.

Queue selection is done as follows:

If the mqprio qdisc is operates on the interface, such that the core networking
code invoked the device setup_tc ndo callback, a mapping of skb->priority =>
queue set is forced - for both, tagged and untagged traffic.

Else, the egress map skb->priority =>  User priority is used for tagged traffic, and
all untagged traffic is sent through tx rings of UP 0.

The patch follows the convergence of discussing that issue with John Fastabend
over this thread http://comments.gmane.org/gmane.linux.network/229877

Cc: John Fastabend <john.r.fastabend@intel.com>
Cc: Liran Liss <liranl@mellanox.com>
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agodrop_monitor: convert to modular building
Neil Horman [Thu, 17 May 2012 10:04:00 +0000 (10:04 +0000)]
drop_monitor: convert to modular building

When I first wrote drop monitor I wrote it to just build monolithically.  There
is no reason it can't be built modularly as well, so lets give it that
flexibiity.

I've tested this by building it as both a module and monolithically, and it
seems to work quite well

Change notes:

v2)
* fixed for_each_present_cpu loops to be more correct as per Eric D.
* Converted exit path failures to BUG_ON as per Ben H.

v3)
* Converted del_timer to del_timer_sync to close race noted by Ben H.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: "David S. Miller" <davem@davemloft.net>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Ben Hutchings <bhutchings@solarflare.com>
Reviewed-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: netdev_alloc_skb() use build_skb()
Eric Dumazet [Thu, 17 May 2012 07:34:16 +0000 (07:34 +0000)]
net: netdev_alloc_skb() use build_skb()

netdev_alloc_skb() is used by networks driver in their RX path to
allocate an skb to receive an incoming frame.

With recent skb->head_frag infrastructure, it makes sense to change
netdev_alloc_skb() to use build_skb() and a frag allocator.

This permits a zero copy splice(socket->pipe), and better GRO or TCP
coalescing.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv6: correct the ipv6 option name - Pad0 to Pad1
Eldad Zack [Thu, 17 May 2012 06:00:25 +0000 (06:00 +0000)]
ipv6: correct the ipv6 option name - Pad0 to Pad1

The padding destination or hop-by-hop option is called Pad1 and not Pad0.

See RFC2460 (4.2) or the IANA ipv6-parameters registry:
http://www.iana.org/assignments/ipv6-parameters/ipv6-parameters.xml

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoetherdevice: fix comments
stephen hemminger [Thu, 17 May 2012 05:17:28 +0000 (05:17 +0000)]
etherdevice: fix comments

Fix some minor problems in comments of etherdevice.h
 * Warning is out dated, file hasn't moved or disappeared in many years and
    is unlikely to do so soon.
 * Capitalize Ethernet consistently since it is a proper name
 * Fix descriptive comment of padding
 * Spelling and grammar fix for alignment comment

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agopppoe: remove unused return value from two methods.
Rami Rosen [Thu, 17 May 2012 05:04:50 +0000 (05:04 +0000)]
pppoe: remove unused return value from two methods.

The patch removes unused return value from __delete_item() and
delete_item() methods in drivers/net/ppp/pppoe.c.

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net...
David S. Miller [Thu, 17 May 2012 19:09:09 +0000 (15:09 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/jkirsher/net-next

12 years agotarget: Fix bug in handling of FILEIO + block_device resize ops
Nicholas Bellinger [Wed, 16 May 2012 23:05:26 +0000 (16:05 -0700)]
target: Fix bug in handling of FILEIO + block_device resize ops

This patch fixes a bug in the handling of FILEIO w/ underlying block_device
resize operations where the original fd_dev->fd_dev_size was incorrectly being
used in fd_get_blocks() for READ_CAPACITY response payloads.

This patch avoids using fd_dev->fd_dev_size for FILEIO devices with
an underlying block_device, and instead changes fd_get_blocks() to
get the sector count directly from i_size_read() as recommended by hch.

Reported-by: Christoph Hellwig <hch@lst.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
12 years agotcp: bool conversions
Eric Dumazet [Wed, 16 May 2012 23:15:34 +0000 (23:15 +0000)]
tcp: bool conversions

bool conversions where possible.

__inline__ -> inline

space cleanups

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Thu, 17 May 2012 16:57:13 +0000 (09:57 -0700)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave-dmaengine fixes fromVinod Koul:
 "fixes of cylic dma usages in slave dma drivers"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: fix cyclic dma usage
  dmaengine: pl330: dont complete descriptor for cyclic dma

12 years agoMerge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Linus Torvalds [Thu, 17 May 2012 16:55:58 +0000 (09:55 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull last minute virtio fixes from Michael S. Tsirkin:
 "Here are a couple of last minute virtio fixes for 3.4.  Hope it's not
  too late yes - I might have tried too hard to make sure the fix is
  well tested.

  Fixes are by Amit and myself.  One fixes module removal and one
  suspend of a VM, the last one the handling of out of memory condition.

  They are thus very low risk as most people never hit these paths, but
  do fix very annoying problems for people that do use the feature.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  virtio_net: invoke softirqs after __napi_schedule
  virtio: balloon: let host know of updated balloon size before module removal
  virtio: console: tell host of open ports after resume from s3/s4

12 years agoMerge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm...
Linus Torvalds [Thu, 17 May 2012 16:46:07 +0000 (09:46 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM: SoC fixes from Olof Johansson:
 "I will stop trying to predict when we're done with fixes for a
  release.

  Here's another small batch of three patches for arm-soc:

   - A fix for a boot time WARN_ON() due to irq domain conversion on
     PRIMA2
   - Fix for a regression in Tegra SMP spinup code due to swapped
     register offsets
   - Fixed config dependency for mv_cesa crypto driver to avoid build
     breakage"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: PRIMA2: fix irq domain size and IRQ mask of internal interrupt controller
  crypto: mv_cesa requires on CRYPTO_HASH to build
  ARM: tegra: Fix flow controller accesses

12 years agoMerge tag 'md-3.4-fixes' of git://neil.brown.name/md
Linus Torvalds [Thu, 17 May 2012 16:44:35 +0000 (09:44 -0700)]
Merge tag 'md-3.4-fixes' of git://neil.brown.name/md

Pull two md fixes from NeilBrown:
 "One fixes a bug in the new raid10 resize code so is relevant to 3.4
  only.

  The other fixes a bug in the use of md by dm-raid, so is relevant to
  any kernel with dm-raid support"

* tag 'md-3.4-fixes' of git://neil.brown.name/md:
  MD: Add del_timer_sync to mddev_suspend (fix nasty panic)
  md/raid10: set dev_sectors properly when resizing devices in array.

12 years agoMerge branches 'perf-urgent-for-linus', 'x86-urgent-for-linus' and 'sched-urgent...
Linus Torvalds [Thu, 17 May 2012 16:35:17 +0000 (09:35 -0700)]
Merge branches 'perf-urgent-for-linus', 'x86-urgent-for-linus' and 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf, x86 and scheduler updates from Ingo Molnar.

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  tracing: Do not enable function event with enable
  perf stat: handle ENXIO error for perf_event_open
  perf: Turn off compiler warnings for flex and bison generated files
  perf stat: Fix case where guest/host monitoring is not supported by kernel
  perf build-id: Fix filename size calculation

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, kvm: KVM paravirt kernels don't check for CPUID being unavailable
  x86: Fix section annotation of acpi_map_cpu2node()
  x86/microcode: Ensure that module is only loaded on supported Intel CPUs

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched: Fix KVM and ia64 boot crash due to sched_groups circular linked list assumption

12 years agoARM: 7419/1: vfp: fix VFP flushing regression on sigreturn path
Will Deacon [Tue, 15 May 2012 14:51:54 +0000 (15:51 +0100)]
ARM: 7419/1: vfp: fix VFP flushing regression on sigreturn path

Commit ff9a184c ("ARM: 7400/1: vfp: clear fpscr length and stride bits
on entry to sig handler") flushes the VFP state prior to entering a
signal handler so that a VFP operation inside the handler will trap and
force a restore of ABI-compliant registers. Reflushing and disabling VFP
on the sigreturn path is predicated on the saved thread state indicating
that VFP was used by the handler -- however for SMP platforms this is
only set on context-switch, making the check unreliable and causing VFP
register corruption in userspace since the register values are not
necessarily those restored from the sigframe.

This patch unconditionally flushes the VFP state after a signal handler.
Since we already perform the flush before the handler and the flushing
itself happens lazily, the redundant flush when VFP is not used by the
handler is essentially a nop.

Reported-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: Jon Medhurst <tixy@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoARM: 7418/1: LPAE: fix access flag setup in mem_type_table
Vitaly Andrianov [Tue, 15 May 2012 14:01:16 +0000 (15:01 +0100)]
ARM: 7418/1: LPAE: fix access flag setup in mem_type_table

A zero value for prot_sect in the memory types table implies that
section mappings should never be created for the memory type in question.
This is checked for in alloc_init_section().

With LPAE, we set a bit to mask access flag faults for kernel mappings.
This breaks the aforementioned (!prot_sect) check in alloc_init_section().

This patch fixes this bug by first checking for a non-zero
prot_sect before setting the PMD_SECT_AF flag.

Signed-off-by: Vitaly Andrianov <vitalya@ti.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
12 years agoigb: Disable the BMC-to-OS Watchdog Enable bit for DMAC.
Matthew Vick [Sat, 14 Apr 2012 05:20:32 +0000 (05:20 +0000)]
igb: Disable the BMC-to-OS Watchdog Enable bit for DMAC.

Under certain scenarios, it's possible that bursty manageability traffic
over the BMC-to-OS path may overrun the internal manageability receive
buffer causing dropped manageability packets. Clearing this bit prevents
this situation by interrupting coalescing to allow manageability traffic
through.

Signed-off-by: Matthew Vick <matthew.vick@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
12 years agoe1000: look in the page and not in skb->data for the last byte
Sebastian Andrzej Siewior [Fri, 11 May 2012 16:30:46 +0000 (16:30 +0000)]
e1000: look in the page and not in skb->data for the last byte

The code seems to want to look at the last byte where the HW puts some
information. Since the skb->data area is never seen by the HW I guess it
does not work as expected. We pass the page address to the HW so I
*think* in order to get to the last byte where the information might be
one should use the page buffer and take a look.
This is of course not more than just compile tested.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
12 years agoe1000: remove workaround for Errata 23 from jumbo alloc
Sebastian Andrzej Siewior [Fri, 11 May 2012 03:21:58 +0000 (03:21 +0000)]
e1000: remove workaround for Errata 23 from jumbo alloc

According to the comment, errata 23 says that the memory we allocate
can't cross a 64KiB boundary. In case of jumbo frames we allocate
complete pages which can never cross the 64KiB boundary because
PAGE_SIZE should be a multiple of 64KiB so we stop either before the
boundary or start after it but never cross it. Furthermore the check
seems bogus because it looks at skb->data which is not seen by the HW
at all because we only pass the DMA address of the page we allocated. So
I *think* the workaround is not required here.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
12 years agoe1000e: fix typo in definition of E1000_CTRL_EXT_FORCE_SMBUS
Bruce Allan [Thu, 10 May 2012 02:34:39 +0000 (02:34 +0000)]
e1000e: fix typo in definition of E1000_CTRL_EXT_FORCE_SMBUS

This define is needed by i217.

Reported-by: Bjorn Mork <bjorn@mork.no>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
12 years agovirtio_net: invoke softirqs after __napi_schedule
Michael S. Tsirkin [Wed, 16 May 2012 07:57:12 +0000 (10:57 +0300)]
virtio_net: invoke softirqs after __napi_schedule

__napi_schedule might raise softirq but nothing
causes do_softirq to trigger, so it does not in fact
run. As a result,
the error message "NOHZ: local_softirq_pending 08"
sometimes occurs during boot of a KVM guest when the network service is
started and we are oom:

  ...
  Bringing up loopback interface:  [  OK  ]
  Bringing up interface eth0:
  Determining IP information for eth0...NOHZ: local_softirq_pending 08
   done.
  [  OK  ]
  ...

Further, receive queue processing might get delayed
indefinitely until some interrupt triggers:
virtio_net expected napi to be run immediately.

One way to cause do_softirq to be executed is by
invoking local_bh_enable(). As __napi_schedule is
normally called from bh or irq context, this
seems to make sense: disable bh before __napi_schedule
and enable afterwards.

In fact it's a very complicated way of calling do_softirq(),
and works since this function is only used when we are not
in interrupt context.  It's not hot at all, in any ideal scenario.

Reported-by: Ulrich Obergfell <uobergfe@redhat.com>
Tested-by: Ulrich Obergfell <uobergfe@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
12 years agovirtio: balloon: let host know of updated balloon size before module removal
Amit Shah [Thu, 26 Apr 2012 19:15:56 +0000 (00:45 +0530)]
virtio: balloon: let host know of updated balloon size before module removal

When the balloon module is removed, we deflate the balloon, reclaiming
all the pages that were given to the host.  However, we don't update the
config values for the new balloon size, resulting in the host showing
outdated balloon values.

The size update is done after each leak and fill operation, only the
module removal case was left out.

Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
12 years agovirtio: console: tell host of open ports after resume from s3/s4
Amit Shah [Wed, 25 Apr 2012 09:10:39 +0000 (14:40 +0530)]
virtio: console: tell host of open ports after resume from s3/s4

If a port was open before going into one of the sleep states, the port
can continue normal operation after restore.  However, the host has to
be told that the guest side of the connection is open to restore
pre-suspend state.

This wasn't noticed so far due to a bug in qemu that was fixed recently
(which marked the guest-side connection as always open).

CC: stable@vger.kernel.org # Only for 3.3
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
12 years agonet: core: Use pr_<level>
Joe Perches [Wed, 16 May 2012 19:58:40 +0000 (19:58 +0000)]
net: core: Use pr_<level>

Use the current logging style.

This enables use of dynamic debugging as well.

Convert printk(KERN_<LEVEL> to pr_<level>.
Add pr_fmt. Remove embedded prefixes, use
%s, __func__ instead.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: ipv6: ndisc: Neaten ND_PRINTx macros
Joe Perches [Wed, 16 May 2012 19:28:38 +0000 (19:28 +0000)]
net: ipv6: ndisc: Neaten ND_PRINTx macros

Why use several macros when one will do?

Convert the multiple ND_PRINTKx macros to a single
ND_PRINTK macro.  Use the new net_<level>_ratelimited
mechanism too.

Add pr_fmt with "ICMPv6: " as prefix.
Remove embedded ICMPv6 prefixes from messages.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agopktgen: Use pr_debug
Joe Perches [Wed, 16 May 2012 17:50:41 +0000 (17:50 +0000)]
pktgen: Use pr_debug

Convert printk(KERN_DEBUG to pr_debug which can
enable dynamic debugging.

Remove embedded prefixes from the conversions as
pr_fmt adds them.

Align arguments.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: include/net/sock.h cleanup
Eric Dumazet [Wed, 16 May 2012 22:48:15 +0000 (22:48 +0000)]
net: include/net/sock.h cleanup

bool/const conversions where possible

__inline__ -> inline

space cleanups

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoisdn: remove duplicate NULL check
Dan Carpenter [Wed, 16 May 2012 20:51:02 +0000 (20:51 +0000)]
isdn: remove duplicate NULL check

We test both "!skb_out" and "skb_out" here which is duplicative and
causes a static checker warning.  I considered that the intent might
have been to test "skb_in" but that's a valid pointer here.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonet: l2tp: Standardize logging styles
Joe Perches [Wed, 16 May 2012 09:55:56 +0000 (09:55 +0000)]
net: l2tp: Standardize logging styles

Use more current logging styles.

Add pr_fmt to prefix output appropriately.
Convert printks to pr_<level>.
Convert PRINTK macros to new l2tp_<level> macros.
Neaten some <foo>_refcount debugging macros.
Use print_hex_dump_bytes instead of hand-coded loops.
Coalesce formats and align arguments.

Some KERN_DEBUG output is not now emitted unless
dynamic_debugging is enabled.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: James Chapman <jchapman@katalix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoARM: PRIMA2: fix irq domain size and IRQ mask of internal interrupt controller
Barry Song [Thu, 17 May 2012 03:28:55 +0000 (11:28 +0800)]
ARM: PRIMA2: fix irq domain size and IRQ mask of internal interrupt controller

the old codes will cause 3.4 kernel warning as irq domain size is wrong:
------------[ cut here ]------------
WARNING: at kernel/irq/irqdomain.c:74 irq_domain_legacy_revmap+0x24/0x48()
Modules linked in:
[<c0013f50>] (unwind_backtrace+0x0/0xf8) from [<c001e7d8>] (warn_slowpath_common+0x54/0x64)
[<c001e7d8>] (warn_slowpath_common+0x54/0x64) from [<c001e804>] (warn_slowpath_null+0x1c/0x24)
[<c001e804>] (warn_slowpath_null+0x1c/0x24) from [<c005c3c4>] (irq_domain_legacy_revmap+0x24/0x48)
[<c005c3c4>] (irq_domain_legacy_revmap+0x24/0x48) from [<c005c704>] (irq_create_mapping+0x20/0x120)
[<c005c704>] (irq_create_mapping+0x20/0x120) from [<c005c880>] (irq_create_of_mapping+0x7c/0xf0)
[<c005c880>] (irq_create_of_mapping+0x7c/0xf0) from [<c01a6c48>] (irq_of_parse_and_map+0x2c/0x34)
[<c01a6c48>] (irq_of_parse_and_map+0x2c/0x34) from [<c01a6c68>] (of_irq_to_resource+0x18/0x74)
[<c01a6c68>] (of_irq_to_resource+0x18/0x74) from [<c01a6ce8>] (of_irq_count+0x24/0x34)
[<c01a6ce8>] (of_irq_count+0x24/0x34) from [<c01a7220>] (of_device_alloc+0x58/0x158)
[<c01a7220>] (of_device_alloc+0x58/0x158) from [<c01a735c>] (of_platform_device_create_pdata+0x3c/0x80)
[<c01a735c>] (of_platform_device_create_pdata+0x3c/0x80) from [<c01a7468>] (of_platform_bus_create+0xc8/0x190)
[<c01a7468>] (of_platform_bus_create+0xc8/0x190) from [<c01a74cc>] (of_platform_bus_create+0x12c/0x190)
---[ end trace 1b75b31a2719ed32 ]---

Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
David S. Miller [Thu, 17 May 2012 02:17:37 +0000 (22:17 -0400)]
Merge git://git./linux/kernel/git/davem/net

12 years agoMD: Add del_timer_sync to mddev_suspend (fix nasty panic)
Jonathan Brassow [Wed, 16 May 2012 09:06:14 +0000 (04:06 -0500)]
MD: Add del_timer_sync to mddev_suspend (fix nasty panic)

Use del_timer_sync to remove timer before mddev_suspend finishes.

We don't want a timer going off after an mddev_suspend is called.  This is
especially true with device-mapper, since it can call the destructor function
immediately following a suspend.  This results in the removal (kfree) of the
structures upon which the timer depends - resulting in a very ugly panic.
Therefore, we add a del_timer_sync to mddev_suspend to prevent this.

Cc: stable@vger.kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
12 years agomd/raid10: set dev_sectors properly when resizing devices in array.
NeilBrown [Thu, 17 May 2012 00:08:45 +0000 (10:08 +1000)]
md/raid10: set dev_sectors properly when resizing devices in array.

raid10 stores dev_sectors in 'conf' separately from the one in
'mddev' because it can have a very significant effect on block
addressing and so need to be updated carefully.

However raid10_resize isn't updating it at all!

To update it correctly, we need to make sure it is a proper
multiple of the chunksize taking various details of the layout
in to account.
This calculation is currently done in setup_conf.   So split it
out from there and call it from raid10_resize as well.
Then set conf->dev_sectors properly.

Signed-off-by: NeilBrown <neilb@suse.de>
12 years agonetfilter: nf_ct_h323: fix usage of MODULE_ALIAS_NFCT_HELPER
Pablo Neira Ayuso [Sun, 13 May 2012 22:42:02 +0000 (00:42 +0200)]
netfilter: nf_ct_h323: fix usage of MODULE_ALIAS_NFCT_HELPER

ctnetlink uses the aliases that are created by MODULE_ALIAS_NFCT_HELPER
to auto-load the module based on the helper name. Thus, we have to use
RAS, Q.931 and H.245, not H.323.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>