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360,964 commits

Author SHA1 Message Date
Mark Einon
26ef1021c1 staging: et131x: Modify block comments to fit with networking style
In preparation for moving et131x to drivers/net, fixup the block
comments to match the preferred networking style - no /* on separate
line, but */ are on a seperate line.

Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 08:58:44 -08:00
Mark Einon
c655dee929 staging: et131x: Trivial camel case fixes
Checkpatch now highlights some camel case flag names. Fix these issues.

Also fix some remaining lines > 80chars issues for completeness.

Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 08:58:44 -08:00
Mark Einon
c8b0a484cc staging: et131x: Fix endian bugs in et131x_get_regs()
et131x_get_regs() calls et131x_mii_read(), passing the address of a u32
which is cast to a (u16 *). This works fine for little endian systems,
but not for big endian. Change so that the types are cast, not pointers
to the types.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Einon <mark.einon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 08:58:44 -08:00
Devendra Naga
c095454e4b staging: sep: remove assignment to i and j in sep_crypto_setup
the i and j are used in for loop and they assigned to zeros in the
for loop, so no need to assign them to zeros again.

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 08:58:44 -08:00
Devendra Naga
7b63c5772f staging: dgrp: check for a valid proc dir entry pointer
while proc_create fails, the register_proc_table can do a derefernce of the
null pointer causing to oops the system, instead check for a valid pointer
at register and unregister

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 08:58:44 -08:00
Alan Stern
0f815a0a70 USB: UHCI: fix IRQ race during initialization
This patch (as1644) fixes a race that occurs during startup in
uhci-hcd.  If the IRQ line is shared with other devices, it's possible
for the handler routine to be called before the data structures are
fully initialized.

The problem is fixed by adding a check to the IRQ handler routine.  If
the initialization hasn't finished yet, the routine will return
immediately.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Don Zickus <dzickus@redhat.com>
Tested-by: "Huang, Adrian (ISS Linux TW)" <adrian.huang@hp.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-22 08:55:13 -08:00
Oleg Nesterov
910ffdb18a ptrace: introduce signal_wake_up_state() and ptrace_signal_wake_up()
Cleanup and preparation for the next change.

signal_wake_up(resume => true) is overused. None of ptrace/jctl callers
actually want to wakeup a TASK_WAKEKILL task, but they can't specify the
necessary mask.

Turn signal_wake_up() into signal_wake_up_state(state), reintroduce
signal_wake_up() as a trivial helper, and add ptrace_signal_wake_up()
which adds __TASK_TRACED.

This way ptrace_signal_wake_up() can work "inside" ptrace_request()
even if the tracee doesn't have the TASK_WAKEKILL bit set.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-01-22 08:50:08 -08:00
H. Peter Anvin
d29a4a5fe8 This patchset adds support for federated systems where multiple memory
controllers can exist and see each other over multiple PCI domains. This
 basically means that AMD node ids can be more than 8 now and the code
 handling this is taught to incorporate PCI domain into those IDs.
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Merge tag 'numascale' into x86/platform

This patchset adds support for federated systems where multiple memory
controllers can exist and see each other over multiple PCI domains. This
basically means that AMD node ids can be more than 8 now and the code
handling this is taught to incorporate PCI domain into those IDs.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
2013-01-22 08:37:34 -08:00
Lee Jones
00441b5e6b mfd: Fix compile errors and warnings when !CONFIG_AB8500_BM
drivers/mfd/ab8500-core.c:1015:21: error: ‘ab8500_bm_data’ undeclared here

include/linux/mfd/abx500/ab8500-bm.h:445:13: warning: ‘ab8500_fg_reinit’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:448:13: warning: ‘ab8500_charger_usb_state_changed’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:451:29: warning: ‘ab8500_btemp_get’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:455:12: warning: ‘ab8500_btemp_get_batctrl_temp’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:463:12: warning: ‘ab8500_fg_inst_curr_blocking’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:442:12: warning: ‘ab8500_fg_inst_curr_done’ defined but not used
include/linux/mfd/abx500/ab8500-bm.h:447:26: warning: ‘ab8500_fg_get’ defined but not used

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-01-22 17:28:44 +01:00
Guenter Roeck
a17155bc9c mfd: vexpress: Export global functions to fix build error
Compiling vexpress client drivers as module results in error messages such as

ERROR: "__vexpress_config_func_get" [drivers/hwmon/vexpress.ko] undefined!
ERROR: "vexpress_config_func_put" [drivers/hwmon/vexpress.ko] undefined!

This is because the global functions in drivers/mfd/vexpress-config.c are not
exported. Fix it.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2013-01-22 17:28:34 +01:00
Geert Uytterhoeven
4ea494b528 MIPS: delay.c: Check BITS_PER_LONG instead of __SIZEOF_LONG__
When building a 32-bit kernel for RBTX4927 with gcc version 4.1.2 20061115
(prerelease) (Ubuntu 4.1.1-21), I get:

arch/mips/lib/delay.c:24:5: warning: "__SIZEOF_LONG__" is not defined

As a consequence, __delay() always uses the 64-bit "dsubu" instruction.

Replace the check for "__SIZEOF_LONG__ == 4" by "BITS_PER_LONG == 32" to
fix this.

Introduced by commit 5210edcd52 [MIPS: Make
__{,n,u}delay declarations match definitions and generic delay.h"]

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Patchwork: https://patchwork.linux-mips.org/patch/4678/
Acked-by: David Daney <david.daney@cavium.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-01-22 16:53:48 +01:00
Mika Westerberg
9dd3162deb i2c-designware: add missing MODULE_LICENSE
The driver can also be built as a module so add MODULE_LICENSE for it. In
addition add MODULE_DESCRIPTION as well.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2013-01-22 16:43:34 +01:00
Takashi Iwai
272f3ea317 ALSA: hda - Add SPDIF mux control to AD codec auto-parser
AD codecs have strange implementations for choosing the SPDIF-output
mux source: the digital audio out widget may take the sources from
multiple connections, where 0x01 indicates it's a PCM while others
point ADCs.  It's obviously invalid in the HD-audio spec POV, but it's
somehow convincing, too.  And, to make things more complex, AD1988A
and AD1882 have deeper connection routes that aren't expressed
correctly.

In this patch, the SPDIF mux control is implemented in two ways:
- For easier one like AD1981, AD1983, AD1884 and AD1984, where the
  SPDIF audio out widget takes just two or three sources, we can
  simply implement via the normal input_mux and connection verb
  calls.

- For the complex routes like AD1988A (but not AD1988B) or AD1882, we
  prepare "faked" paths represented statically, and switch the paths
  using these static ones, instead of parsing the routes from the
  widget tree.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-22 16:41:56 +01:00
Paul Gortmaker
463d413cb7 drivers/net: delete old x86 variant of the seeq8005 driver
The last update to the Ethernet HowTo (over 10 years ago) listed this:

 ------------------------
   SEEQ 8005

   Status: Obsolete, Driver Name: seeq8005

   There is little information about the card included in the driver,
   and hence little information to be put here. If you have a question,
   you are probably best trying to e-mail the driver author as listed
   in the source.

   It was marked obsolete as of the 2.4 series kernels.
 ------------------------

If it was obsolete over a decade ago, the situation can not have
improved with the passage of time, so let us act on that.  Even with
today's improved search engines, I was unable to locate any real
meaningful information on the ISA implementation of this rare chip.

There are ARM and SGI variants of the driver in tree, but they do
not depend on the original x86 driver source or header file.  We
leave those non-x86 drivers to be deleted by the arch maintainers
when they decide to expire those legacy platforms as a whole.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:56 -05:00
Paul Gortmaker
0ffd89e48f drivers/net: delete Digital EtherWorks-3 support.
This is another one that makes sense to target for obsolescence, since
it (a)appeared pre-1995, and (b)was rather rare, and (c)did not
really have any statistically significant active linux user base.

Removing this ISA 10Mbit driver support is unlikely to be even noticed
by the user base of 3.9+ linux kernels, especially when the documentation
clearly indicates the vintage with this text:

	 "...designed to  work with all kernels > 1.1.33"

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:55 -05:00
Paul Gortmaker
1f1c7a5c1d drivers/net: delete old DEC depca ISA drivers support.
These are old ISA 10Mbit cards from the 1st 1/2 of the 1990s and
required manual jumper settings in order to configure them.  Here
we remove them on the premise that they are no longer used in any
modern 3.9+ kernels.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:55 -05:00
Paul Gortmaker
fce3cd45e6 drivers/net: delete the really obsolete 8390 based 10Mbit ISA drivers
This is an area I know all too well, after being author of several 8390
drivers, and maintainer of all 8390 drivers during a large part of their
active lifecycle.

To that end, I can say this with a reasonable degree of confidence.
The drivers deleted here represent the earliest (as in early 1990)
hardware and/or rare hardware.  The remaining hardware not deleted
here is the more modern/sane of the lot, with ISA-PnP and jumperless
"soft configuration" like the wd and smc cards had.

The original ne2000 driver (ne.c) gets a pass at this time since
AT/LANTIC based cards that could be both ne2000 or wd-like (with
shared memory) and with jumperless configuration were made in the
mid to late 1990's, and performed reasonably well for their era.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:54 -05:00
Paul Gortmaker
bb37f1223a drivers/net: delete old fujitsu based eth16i driver
This is another driver for relatively rare 10Mbit hardware that
originated in the early 1990's.  So we select it for removal at
this point in time as well.

Cc: Mika Kuoppala <miku@iki.fi>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:54 -05:00
Paul Gortmaker
13a80cb8b7 drivers/net: delete at1700 ISA 10Mbit driver
These Fujitsu MB86965 based ISA 10Mbit cards were another of the
relatively rare cards dating from the early 1990s that for one reason
or another didn't seem to get a lot of use in linux.  So we retire it
now with a reasonable degree of confidence that it won't impact anyone.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:53 -05:00
Paul Gortmaker
d2477de7a6 drivers/net: delete old 8 bit ISA Racal ni5010 support.
These cards were only available in 8bit format, and in addition
they only had AUI and BNC(10-Base2) interfaces (i.e. no RJ-45).

In fact, they are so rare, that an internet search on these old
cards almost comes up empty, unless the "Micom interlan" name
is used.

This puts them in the equivalent domain as the 3c501, so there
should be no strong opposition to the driver removal, as nobody
is seriously using 3.9+ with 8 bit ISA hardware.

In doing so, the whole "ethernet/racal" category becomes empty,
so we clean up the Makefile/Kconfig and subdir appropriately.

Cc: Andreas Mohr <andi@lisas.de>
Cc: Jan-Pascal van Best <janpascal@vanbest.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:52 -05:00
Paul Gortmaker
04861c535d drivers/net: delete Racal Interlan ISA ni52 (i825xx) driver
Like the other drivers that were in the ISA i825xx family, the ni52
was rather rare, not widely used, and hence perhaps not as reliable
as the more mainstream ISA drivers that were heavily used.  Given
that, it is chosen for retirement at this time as well.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:52 -05:00
Paul Gortmaker
8a594170de drivers/net: delete intel i825xx based znet notebook driver
This driver supported early to mid 1990's Zenith laptops, of the
2" thick variety.  The driver was already dead 10+ years ago, but
we see this in the source:

 ----------------
 /* 10/2002

 [...]

   Tested on a vintage Zenith Z-Note 433Lnp+. Probably broken on
   anything else. Testers (and detailed bug reports) are welcome :-).
 ----------------

To clarify, a 433 translates into a 486 at 33MHz, and a system with
a default of 4MB RAM.  I can't fault the noble effort to keep things
working a decade ago, but at this point in time, there is no valid
justification to continue carrying this driver along.

Note that there is no associated Space.c cleanup here since this
driver was using module_init to hook itself in.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:51 -05:00
Paul Gortmaker
f84932d831 drivers/net: delete ISA intel eexpress and eepro i825xx drivers
These old drivers should not be confused with the very common PCI
cards that are supported by e100.c -- these older 10Mbit ISA only
drivers were not as commonly used as some of the other ISA drivers,
simply due to hardware availability and pricing.

Given the rarity of the hardware, and the subsequent less extensive
use of the drivers, it makes sense to obsolete them at this point
in time, along with other rare/experimental ISA drivers.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:51 -05:00
Paul Gortmaker
0e245dbaac drivers/net: delete the 3Com 3c505/3c507 intel i825xx support
For those of us who were around in the early to mid 1990's, we
will remember that the i825xx ethernet support was not something
that was considered sufficiently vetted for 24/7 use.

Folks might be inclined to use *functional* ISA hardware on some
near expired P3 ISA machines for dedicated workhorse applications,
but the odds of using (and relying on) one of these old/experimental
drivers is essentially nil.  So lets remove them.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:50 -05:00
Paul Gortmaker
168e06ae26 drivers/net: delete old parallel port de600/de620 drivers
The parallel port is largely replaced by USB, and even in the
day where these drivers were current, the documented speed was
less than 100kB/s.  Let us not pretend that anyone cares about
these drivers anymore, or worse - pretend that anyone is using
them on a modern kernel.

As a side bonus, this is the end of legacy parallel port ethernet,
so we get to drop the whole chunk relating to that in the legacy
Space.c file containing the non-PCI unified probe dispatch.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:49 -05:00
Paul Gortmaker
de8270ff46 drivers/net: delete old 8bit ISA 3c501 driver.
It was amusing that linux was able to make use of this 1980's
technology on machines long past its intended lifespan, but
it probably should go now.

To set some context, the 3c501 was designed in the 1980's to be
used on 8088 PC-XT 8bit ISA machines.  It was built using a large
number of discrete TTL components and truly looks like a relic
of the ancient past before large scale integration was common.

But from a functional point of view, the real issue, as stated
in the (also obsolete) Ethernet-HowTo, is that "...the 3c501 can
only do one thing at a time -- while you are removing one packet
from the single-packet buffer it cannot receive another packet,
nor can it receive a packet while loading a transmit packet."

You know things are not good when the Kconfig help text suggests
you make a cron job doing a ping every minute.

Hardware that old and crippled is simply not going to be used by
anyone in a time where 10 year old 100Mbit PCI cards (that are
still functional) are largely give-away items.

Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:49 -05:00
Paul Gortmaker
5205939d0f drivers/net: delete intel 486 panther onboard ethernet support
This driver was specific to a "professional workstation" line
of products from around 1993 that used the i82596 ethernet chip
as an on-board ethernet solution.

With a 486 processor, and the premium top of the line model maxing
out at a clock speed of 50MHz, we can safely retire this support.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:39:48 -05:00
Paul Gortmaker
6e07ba3e6a drivers/net: delete 486 Apricot support
The Apricot was a 486 PC with 4MB RAM, and an on-board ethernet
via an intel i82596 hard-wired to i/o 0x300.

Those who were using linux in the 1990's will recall that the
i82596 driver was not one of the more stable or widely used
drivers of its day.  Combine that with the extremely limited
resources of the platform, and it is truly time to expire the
support for this thing.

There are some old m68k targets who were also using this chip,
so rather than poll the m68k user base, we simply cut out the
x86/Apricot support here in this commit.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2013-01-22 10:32:35 -05:00
Jens Axboe
1383923d19 Merge branch 'for-jens' of git://git.drbd.org/linux-drbd into for-linus 2013-01-22 08:22:11 -07:00
Aaro Koskinen
9eb13cf3ec i2c: omap: fix draining irq handling
Commit 0bdfe0cb80 (i2c: omap: sanitize
exit path) changed the interrupt handler to exit early and complete
the transfer after the draining IRQ is handled. As a result, the ARDY
may not be cleared properly, and it may cause all future I2C transfers
to timeout with "timeout waiting for bus ready". This is reproducible
at least with N900 when twl4030_gpio makes a long write (> FIFO size)
during the probe (http://marc.info/?l=linux-omap&m=135818882610432&w=2).

The fix is to continue until we get ARDY interrupt that completes the
transfer. Tested with 3.8-rc4 + N900: 20 boots in a row without errors;
without the patch the problem triggers after few reboots.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2013-01-22 16:17:05 +01:00
Aaro Koskinen
2c5de558cd i2c: omap: errata i462: fix incorrect ack for arbitration lost interrupt
The errata handling function acks wrong interrupt in case of "Arbitration
lost". Fix it.

Discovered during code review, the real impact of the bug is unknown.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
2013-01-22 16:17:04 +01:00
Takashi Iwai
dc870f38e9 ALSA: hda - Combine snd_hda_codec_flush_*_cache() to a single function
Since both snd_hda_codec_flush_amp_cache() and
snd_hda_codec_flush_cmd_cache() are called usually at the same time,
we can simply combine them to a single function,
snd_hda_codec_flush_cache().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-22 15:25:25 +01:00
Takashi Iwai
a836dbf685 ALSA: hda - Fix missing call of cmd flush in capture volume put callback
The capture volume put callback may call the node selection change,
and its actual call won't be triggered unless flushed.  In general,
we always need to call both snd_hda_codec_flush_amp_cache() and
snd_hda_codec_flush_cmd_cache() at the same place...

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-22 15:18:17 +01:00
Takashi Iwai
4bd01e9336 ALSA: hda - Add missing exports to helper functions
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-22 15:17:20 +01:00
Takashi Iwai
42875479b2 ALSA: hda - Revive SPDIF mux for IDT/STAC codecs
The stuff that was dropped while transition to the generic parser is
now recovered.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-22 14:12:44 +01:00
Takashi Iwai
92603c5945 ALSA: hda - Disable HP auto-mute during independent HP mode
Both the HP auto-mute and the independent HP mode conflict with each
other.  Make HP auto-mute disabled (only for the affected HP jack)
during the driver is in HP independent mode.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-22 14:12:42 +01:00
Takashi Iwai
a607148ff3 ALSA: hda - Set individual name to secondary analog PCM stream
It'd be better to give another name to the secondary (alt) analog PCM
stream, which is dedicated for the independent HP out and extra
inputs.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-22 14:12:40 +01:00
Takashi Iwai
f2f8be43c5 ALSA: hda - Add aamix NID to AD codecs
The aamix NIDs are also missing for AD codecs.  All AD codecs seem to
have a (more or less) working aamix widget.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2013-01-22 14:12:08 +01:00
Mika Kuoppala
9943393195 drm/i915: use gem_set_seqno() on hardware init
When machine was rebooted or module was reloaded,
gem_hw_init() set last_seqno to be identical to next_seqno.
This lead to situation that waits for first ever request
always passed immediately regardless if it was actually
executed.

Use gem_set_seqno() to be consistent how hw is
initialized on init, wrap and on resume.

Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2013-01-22 13:52:26 +01:00
Maxime Ripard
c54729eeb0 ARM: sunxi: olinuxino: Add muxing for the uart
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-01-22 13:51:37 +01:00
Maxime Ripard
4348cc643a ARM: sunxi: Add uart1 pinctrl groups
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-01-22 13:51:37 +01:00
Maxime Ripard
9e2dcb2f3c ARM: sunxi: Add pinctrl node to the device tree
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-01-22 13:51:36 +01:00
Maxime Ripard
eaa3d8489d ARM: pinctrl: sunxi: Add the pinctrl pin set for sun5i
Since the Allwinner SoCs variants don't have the same set of pins to
handle, we need to declare the pin ranges available.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-01-22 13:51:35 +01:00
Maxime Ripard
0e37f88d9a ARM: sunxi: Add pinctrl driver for Allwinner SoCs
The Allwinner SoCs have an IP module that handle both the muxing and the
GPIOs.

This IP has 8 banks of 32 bits, with a number of pins actually useful
for each of these banks varying from one to another, and depending on
the SoC used on the board.

This driver only implements the pinctrl part, the gpio part will come
eventually.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-01-22 13:51:15 +01:00
Haojian Zhuang
8b77b3762c Revert "pinctrl: single: support gpio request and free"
This reverts commit 2e8b2eab94.

Conflicts:
	drivers/pinctrl/pinctrl-single.c

ERROR: "__aeabi_uldivmod" [drivers/pinctrl/pinctrl-single.ko]
undefined!]

On Fri, Jan 11, 2013 at 4:00 PM, Russell King wrote:

> The above error happens in builds including pinctrl-single - the
> reason
> is this, where resource_size_t may be 64-bit.
>
>                 gpio->range.pin_base = (r.start - pcs->res->start) /
>                 mux_bytes;
>                 gpio->range.npins = (r.end - r.start) / mux_bytes + 1;

The reason of not fixing this issue and reverting the patch instead is
this patch can't handle another case. It's not easy to handle multiple
gpios sharing one pin register. So this gpio range feature will be
implemented by other patches.

Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2013-01-22 13:48:07 +01:00
Stefan Bader
9855d8ce41 ACPI: Check MSR valid bit before using P-state frequencies
To fix incorrect P-state frequencies which can happen on
some AMD systems f594065faf
   "ACPI: Add fixups for AMD P-state figures"
introduced a quirk to obtain the correct values by reading
from AMD specific MSRs.

This did cause a regression when running a kernel using that
quirk under Xen which does (currently) not pass through MSR
reads to the HW. Instead the guest gets a 0 in return.
And this seems to cause a failure to initialize the ondemand
governour (hard to say for sure as all P-states appear to run
at the same frequency).

While this should also be fixed in the hypervisor (to allow
a guest to read that MSR), this patch is intended to work
around the issue in the meantime. In discussion it turned out
that indeed real HW/BIOSes may choose to not set the valid bit
and thus mark the P-state as invalid. So this could be considered
a fix for broken BIOSes that also works around the issue on Xen.

Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Cc: 3.7+ <stable@vger.kernel.org>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 13:37:21 +01:00
Gerald Schaefer
be3286507d s390/thp: implement pmdp_set_wrprotect()
On s390, an architecture-specific implementation of the function
pmdp_set_wrprotect() is missing and the generic version is currently
being used. The generic version does not flush the tlb as it would be
needed on s390 when modifying an active pmd, which can lead to subtle
tlb errors on s390 when using transparent hugepages.

This patch adds an s390-specific implementation of pmdp_set_wrprotect()
including the missing tlb flush.

Cc: stable@vger.kernel.org
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2013-01-22 13:32:16 +01:00
Nishanth Menon
8fa938acb3 PM / devfreq: exynos4_bus: honor RCU lock usage
OPP pointers cannot be expected to be valid beyond the boundary
of rcu_read_lock and rcu_read_unlock. Unfortunately, the current
exynos4 busfreq driver does not honor the usage constraint and stores
the OPP pointer in struct busfreq_data. This could potentially
become invalid later such as: across devfreq opp change decisions,
resulting in unpredictable behavior.

To fix this, we introduce a busfreq specific busfreq_opp_info
structure which is used to handle OPP information. OPP information
is de-referenced to voltage and frequency pairs as needed into
busfreq_opp_info structure and used as needed.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 13:28:40 +01:00
Nishanth Menon
bcb27549f4 PM / devfreq: add locking documentation for recommended_opp
OPP pointers are protected by RCU locks, the pointer validity is
permissible only under the section of rcu_read_lock to rcu_read_unlock

Add documentation to the effect.

Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 13:28:39 +01:00
Nishanth Menon
78e8eb8fea cpufreq: cpufreq-cpu0: use RCU locks around usage of OPP
OPP pointer is RCU protected, hence after finding it, de-reference
also should be protected with the same RCU context else the OPP
pointer may become invalid.

Reported-by: Jack Mitchell <jack@embed.me.uk>
Tested-by: Alexander Holler <holler@ahsoftware.de>
Tested-by: Jack Mitchell <jack@embed.me.uk>
Acked-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-01-22 13:28:39 +01:00