Impact: fix double entry creation in /proc

There is a collision between two UV functions:
  both uv_ptc_init() and gru_proc_init() try to make /proc/sgi_uv

So move it's creation to a single place: uv_system_init()
Signed-off-by: NCliff Wickman <cpw@sgi.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Add support for getting the address of a partition's reserved page.
Signed-off-by: NDean Nelson <dcn@sgi.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

Define xp_partition_id and xp_region_size to their correct values.
Signed-off-by: NDean Nelson <dcn@sgi.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

For UV add the code to create the activate and notify gru message queues.
Signed-off-by: NDean Nelson <dcn@sgi.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

Define xp_expand_memprotect() and xp_restrict_memprotect() so they can be
tailered to the hardware they are run on.
Signed-off-by: NDean Nelson <dcn@sgi.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

Add UV bios call to get the address of the reserved page.
Signed-off-by: NRuss Anderson <rja@sgi.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

Add UV bios call to change memory protections.
Signed-off-by: NRuss Anderson <rja@sgi.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

Add UV bios calls to allocate and free watchlists.
Signed-off-by: NRuss Anderson <rja@sgi.com>
Signed-off-by: NH. Peter Anvin <hpa@zytor.com>

Impact: cleanup

Change UV heartbeat function to use idle_cpu to determine cpu's
"idleness".  Realign uv_hub definitions.
Signed-of-by: NMike Travis <travis@sgi.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Impact: start per CPU heartbeat LED timers on SGI UV systems

The SGI UV system has no LEDS but uses one of the system controller
regs to indicate the online internal state of the cpu.  There is a
heartbeat bit indicating that the cpu is responding to interrupts,
and an idle bit indicating whether the cpu is idle when the heartbeat
interrupt occurs.  The current period is one second.

When a cpu panics, an error code is written by BIOS to this same reg.

This patchset provides the following:

  * x86_64: Add base functionality for writing to the specific SCIR's
    for each cpu.

  * heartbeat: Invert "heartbeat" bit to indicate the cpu is
    "interruptible".  If the current thread is the idle thread,
    then indicate system is "idle".

  * if hotplug enabled, all bits are set (0xff) when the cpu is disabled.
Signed-off-by: NMike Travis <travis@sgi.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

.. fix all the worst problems in -rc1

If CONFIG_AMIGA_BUILTIN_SERIAL=m, I get the following warnings:

| drivers/char/amiserial.c: At top level:
| drivers/char/amiserial.c:2138: warning: data definition has no type or storage class
| drivers/char/amiserial.c:2138: warning: type defaults to 'int' in declaration of 'console_initcall'
| drivers/char/amiserial.c:2138: warning: parameter names (without types) in function declaration
| drivers/char/amiserial.c:2134: warning: 'amiserial_console_init' defined but not used

because console_initcall() is not defined (nor really sensible) in the
modular case.

So disable serial console support if the driver is modular.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

In commit f337b9c5 ("epoll: drop
unnecessary test") Thomas found that there is an unnecessary (always
true) test in ep_send_events().  The callback never inserts into
->rdllink while the send loop is performed, and also does the
~EP_PRIVATE_BITS test.  Given we're holding the mutex during this time,
the conditions tested inside the loop are always true.

HOWEVER.

The test "!ep_is_linked(&epi->rdllink)" wasn't there because we insert
into ->rdllink, but because the send-events loop might terminate before
the whole list is scanned (-EFAULT).

In such cases, when the loop terminates early, and when a (leftover)
file received an event while we're performing the lockless loop, we need
such test to avoid to double insert the epoll items.  The list_splice()
done a few steps below, will correctly re-insert the ones that were left
on "txlist".

This should fix the kenrel.org bugzilla entry 11831.
Signed-off-by: NDavide Libenzi <davidel@xmailserver.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Some userland apps seem to pass in a "0" for the seconds, and several
seconds worth of usecs to select().  The old kernels accepted this just
fine, so the new kernels must too.

However, due to the upscaling of the microseconds to nanoseconds we had
some cases where we got math overflow, and depending on the GCC version
(due to inlining decisions) that actually resulted in an -EINVAL return.

This patch fixes this by adding the excess microseconds to the seconds
field.

Also with thanks to Marcin Slusarz for spotting some implementation bugs
in the diagnostics patches.
Reported-by: NCarlos R. Mafra <crmafra2@gmail.com>
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

The default for the regulatory compatibility option is wrong;
if you picked the default you ended up with a non-functional wifi
system (at least I did on Fedora 9 with iwl4965).
I don't think even the October 2008 releases of the various distros
has the new userland so clearly the default is wrong, and also
we can't just go about deleting this in 2.6.29...

Change the default to "y" and also adjust the config text a little to
reflect this.

This patch fixes regression #11859

With thanks to Johannes Berg for the diagnostics
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

/scratch/sfr/next/kernel/cgroup.c: In function 'cgroup_tasks_start':
/scratch/sfr/next/kernel/cgroup.c:2107: warning: unused variable 'i'

Introduced in commit cc31edce "cgroups:
convert tasks file to use a seq_file with shared pid array".
Signed-off-by: NStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'hwmon-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6:
  hwmon: (abituguru3) enable DMI probing feature on AW9D-MAX
  hwmon: (abituguru3) Cosmetic whitespace fixes
  hwmon: (adt7473) Fix voltage conversion routines
  hwmon: (lm90) Add support for the LM99 16 degree offset
  hwmon: (lm90) Fix handling of hysteresis value
  hwmon-vid: Add support for AMD family 10h CPUs
  hwmon: (w83781d) Fix linking when built-in

This reverts commit 7bf6bf48.

The code has both a short existence and an increasing track of failures
despite some work to amend it for -rc1.  It is not just a matter of
reading the eeprom: sometimes the eeprom is read correctly, then the mac
address is not written correctly back into the mac registers.

Some chipsets seem to work reliably but it is not clear at this point if
the code can simply be made to work on a per-chipset basis and post -rc1
is not the place where I want to experiment these things.
Signed-off-by: NFrancois Romieu <romieu@fr.zoreil.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

a) semicolon before the function body is a bad idea
b) it's const struct foo, not struct const foo
c) incidentally, it's ecard_remove_driver(), not ecard_unregister_driver()
d) compiling is occasionally useful.
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

If you use KCONFIG_ALLCONFIG (even with empty file) you get broken
allmodconfig/allyesconfig; CONFIG_MODULES gets turned off, with obvious
massive fallout.

Breakage had been introduced when conf_set_all_new_symbols() got used
for allmodconfig et.al.

What happens is that sym_calc_value(modules_sym) done in
conf_read_simple() sets SYMBOL_VALID on both modules_sym and MODULES.
When we get to conf_set_all_new_symbols(), we set sym->def[S_DEF_USER]
on everything, but it has no effect on sym->curr for the symbols that
already have SYMBOL_VALID - these are stuck.

Solution: use sym_clear_all_valid() in there.  Note that it makes
reevaluation of modules_sym redundant - sym_clear_all_valid() will do
that itself.

[ Fixes http://bugzilla.kernel.org/show_bug.cgi?id=11512, says Alexey ]
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Switch the AW9D-MAX over from port probing to the preferred DMI
probe method.
Signed-off-by: NAlistair John Strachan <alistair@devzero.co.uk>
Tested-by: NJustin Piszcz <jpiszcz@lucidpixels.com>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

As the probable result of zealous copy/pasting, many supported boards
contain sensor names with trailing whitespace. Though this is not a
huge problem, it is inconsistent with other sensor names, and with
other similar hwmon drivers.

Additionally, the DMI nag message added in 2.6.27 was missing a
space between two sentence fragments -- might as well clean that up
too.

Doesn't alter any kernel text, just data.
Signed-off-by: NAlistair John Strachan <alistair@devzero.co.uk>
Reported-by: NJustin Piszcz <jpiszcz@lucidpixels.com>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Fix voltage conversion routines. Based on an earlier patch from
Paulius Zaleckas.

According to the datasheet voltage is scaled with resistors and
value 192 is nominal voltage. 0 is 0V.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
Cc: Darrick J. Wong <djwong@us.ibm.com>

The LM99 differs from the LM86, LM89 and LM90 in that it reports
remote temperatures (temp2) 16 degrees lower than they really are. So
far we have been cheating and handled this in userspace but it really
should be handled by the driver directly.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>

There are several problems in the way the hysteresis value is handled
by the lm90 driver:

* In show_temphyst(), specific handling of the MAX6646 is missing, so
  the hysteresis is reported incorrectly if the critical temperature
  is over 127 degrees C.
* In set_temphyst(), the new hysteresis register value is written to
  the chip but data->temp_hyst isn't updated accordingly, so there is
  a short period of time (up to 2 seconds) where the old hystereris
  value will be returned while the new one is already active.
* In set_temphyst(), the critical temperature which is used as a base
  to compute the value of the hysteresis register lacks
  device-specific handling. As a result, the value of the hysteresis
  register might be incorrect for the ADT7461 and MAX6646 chips.

Fix these 3 bugs.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Cc: Nate Case <ncase@xes-inc.com>

The AMD family 10h CPUs use the same VID decoding table as the family
0Fh CPUs.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Rudolf Marek <r.marek@assembler.cz>

When w83781d is built-in, the final links fails with the following vague error
message:

`.exit.text' referenced in section `.init.text' of drivers/built-in.o: defined
in discarded section `.exit.text' of drivers/built-in.o

w83781d_isa_unregister() cannot be marked __exit, as it's also called from
sensors_w83781d_init(), which is marked __init.
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: Fix duplicate entries returned from getdents() system call
  ext3: Fix duplicate entries returned from getdents() system call

This reverts commit a802dd0e by moving
the call to init_workqueues() back where it belongs - after SMP has been
initialized.

It also moves stop_machine_init() - which needs workqueues - to a later
phase using a core_initcall() instead of early_initcall().  That should
satisfy all ordering requirements, and was apparently the reason why
init_workqueues() was moved to be too early.

Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Fix a regression caused by commit d0156417, "ext4: fix ext4_dx_readdir
hash collision handling", where deleting files in a large directory
(requiring more than one getdents system call), results in some
filenames being returned twice.  This was caused by a failure to
update info->curr_hash and info->curr_minor_hash, so that if the
directory had gotten modified since the last getdents() system call
(as would be the case if the user is running "rm -r" or "git clean"),
a directory entry would get returned twice to the userspace.
Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>

This patch fixes the bug reported by Markus Trippelsdorf at:
http://bugzilla.kernel.org/show_bug.cgi?id=11844Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
Tested-by: NMarkus Trippelsdorf <markus@trippelsdorf.de>

Fix a regression caused by commit 6a897cf4, "ext3: fix ext3_dx_readdir
hash collision handling", where deleting files in a large directory
(requiring more than one getdents system call), results in some
filenames being returned twice.  This was caused by a failure to
update info->curr_hash and info->curr_minor_hash, so that if the
directory had gotten modified since the last getdents() system call
(as would be the case if the user is running "rm -r" or "git clean"),
a directory entry would get returned twice to the userspace.

This patch fixes the bug reported by Markus Trippelsdorf at:
http://bugzilla.kernel.org/show_bug.cgi?id=11844Signed-off-by: N"Theodore Ts'o" <tytso@mit.edu>
Tested-by: NMarkus Trippelsdorf <markus@trippelsdorf.de>

The recent commit 2fca5ccf ("libata:
switch to using block layer tagging support") to enable support for
block layer tagging in libata was broken for non-NCQ devices

The block layer initializes the tag field to -1 to detect invalid uses
of a tag, and if the libata devices does NOT support NCQ, we just used
that field to index the internal command list.  So we need to check for
-1 first and only use the tag field if it's valid.
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
Reported-by: NAlexander Beregalov <a.beregalov@gmail.com>
Tested-by: NPaul Mundt <lethal@linux-sh.org>
Tested-by: NDave Young <hidave.darkstar@gmail.com>
Tested-by: NRafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Fix printk format warning:

  drivers/pci/hotplug/acpiphp_ibm.c:207: warning: format '%08lx' expects type 'long unsigned int', but argument 3 has type 'long long unsigned int'
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: remove unused resource assignment in pci_read_bridge_bases()
  PCI hotplug: shpchp: message refinement
  PCI hotplug: shpchp: replace printk with dev_printk
  PCI: add routines for debugging and handling lost interrupts
  PCI hotplug: pciehp: message refinement
  PCI: fix ARI code to be compatible with mixed ARI/non-ARI systems
  PCI hotplug: cpqphp: fix kernel NULL pointer dereference

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (29 commits)
  tcp: Restore ordering of TCP options for the sake of inter-operability
  net: Fix disjunct computation of netdev features
  sctp: Fix to handle SHUTDOWN in SHUTDOWN_RECEIVED state
  sctp: Fix to handle SHUTDOWN in SHUTDOWN-PENDING state
  sctp: Add check for the TSN field of the SHUTDOWN chunk
  sctp: Drop ICMP packet too big message with MTU larger than current PMTU
  p54: enable 2.4/5GHz spectrum by eeprom bits.
  orinoco: reduce stack usage in firmware download path
  ath5k: fix suspend-related oops on rmmod
  [netdrvr] fec_mpc52xx: Implement polling, to make netconsole work.
  qlge: Fix MSI/legacy single interrupt bug.
  smc911x: Make the driver safer on SMP
  smc911x: Add IRQ polarity configuration
  smc911x: Allow Kconfig dependency on ARM
  sis190: add identifier for Atheros AR8021 PHY
  8139x: reduce message severity on driver overlap
  igb: add IGB_DCA instead of selecting INTEL_IOATDMA
  igb: fix tx data corruption with transition to L0s on 82575
  ehea: Fix memory hotplug support
  netdev: DM9000: remove BLACKFIN hacking in DM9000 netdev driver
  ...

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  math-emu: Fix thinko in _FP_DIV
  math-emu: Fix signalling of underflow and inexact while packing result.
  sparc: Add checkstack support
  sparc: correct section of current_pc()
  sparc: correct section of apc_no_idle
  sparc64: Fix race in arch/sparc64/kernel/trampoline.S

This cleanup removes the resource assignment in pci_read_bridge_bases()
since it has taken care by pci_alloc_child_bus() when allocating the bus:

        /* Set up default resource pointers and names.. */
        for (i = 0; i < PCI_BRIDGE_RES_NUM; i++) {
                child->resource[i] = &bridge->resource[PCI_BRIDGE_RESOURCES+i];
                child->resource[i]->name = child->name;
        }
Signed-off-by: NYu Zhao <yu.zhao@intel.com>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>

This patch refines messages in shpchp module.  The main changes are as
follows:

 - remove the trailing "."
 - remove __func__ as much as possible
 - capitalize the first letter of messages
 - show PCI device address including its domain
Signed-off-by: NTaku Izumi <izumi.taku@jp.fujitsu.com>
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>