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Author SHA1 Message Date
Olof Johansson
ff658f46d4 Board specific changes for omap.
Note that these are based on omap-pm-regulator-for-v3.5 as
 both branches are adding twl regulators.
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Merge tag 'omap-board-for-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/boards

Board specific changes for omap.

Note that these are based on omap-pm-regulator-for-v3.5 as
both branches are adding twl regulators.

By Paul Gortmaker (8) and others
via Linus Torvalds (38) and others
* tag 'omap-board-for-v3.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  OMAP: omap4panda: Use common configuration for V1V8, V2V1 supplies
  OMAP: 4430SDP: Use common configuration for V1V8, V2V1 supplies
  OMAP4: twl-common: Add twl6030 V1V8, V2V1 SMPS common configuration
  ARM: OMAP: Mark Beagleboard-xM MMC bus as 4-bit
  Add MSUB support for the LogicPD OMAP3530 DevKits
  ARM: OMAP: rx51: Platform support for lis3lv02d accelerometer
  ARM: OMAP2+: craneboard: register emac device
  ARM: OMAP4: board-omap4panda: Register platform device for HDMI audio codec
  ARM: OMAP4: board-4430sdp: Register platform device for HDMI audio codec
  ARM: OMAP: devices: Register platform devices for HDMI audio
  ARM: OMAP3: igep0020: Add support for Micron NAND Flash storage memory
  ARM: OMAP2+: nand: Make board_onenand_init() visible to board code
  ARM: OMAP3: cm-t35: add support for power off
  ARM: OMAP: WiLink platform data for the PandaBoard
  ARM: OMAP2PLUS: Enable HIGHMEM
  ARM: OMAP: omap2plus_defconfig: Enable ehci-omap and sms95xx support

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-05-10 23:38:32 -07:00
Peter Ujfalusi
8500746fab OMAP: omap4panda: Use common configuration for V1V8, V2V1 supplies
These supplies going to be needed for the twl6040 driver.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:22:39 -07:00
Peter Ujfalusi
1fc631ecfd OMAP: 4430SDP: Use common configuration for V1V8, V2V1 supplies
These supplies going to be needed for the twl6040 driver.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:22:37 -07:00
Peter Ujfalusi
fde0190d69 OMAP4: twl-common: Add twl6030 V1V8, V2V1 SMPS common configuration
V1V8 supply from twl6030 commonly used as VIO for the machine.
V2V1 is adviced to supply the twl6040, and also to feed the twl6030's
VCXIO_IN, and VDAC_IN inputs.
Create the common regulator configurations for these regulators:
Make the V2V1 as supply_regulator for VCXIO, VDAC.
Add twl6040 (1-004b) as consumer for V1V8, and V2V1.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
[tony@atomide.com: updated for the pm regulator changes]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:16 -07:00
Russ Dill
1afb82e452 ARM: OMAP: Mark Beagleboard-xM MMC bus as 4-bit
On Beagleboard-xM (all revisions) only MMC1_DAT0-MMC1_DAT3 are wired up.
Tested on Beagleboard-xM Rev C1 and Beagleboard Rev B4.

Signed-off-by: Russ Dill <Russ.Dill@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:15 -07:00
Ashwin Bihari
44bb3198d7 Add MSUB support for the LogicPD OMAP3530 DevKits
Add support for the OMAP3 MUSB OTG controller to the LogicPD
OMAP3530 SOM-LV[1] and Torpedo[2] DevKits

[1] - www.logicpd.com/products/system-on-modules/omap35x-som-lv/
[2] - www.logicpd.com/products/system-on-modules/omap35x-torpedo-som/

Signed-off-by: Ashwin Bihari <ashwin.bihari@logicpd.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:15 -07:00
Ameya Palande
3b51120115 ARM: OMAP: rx51: Platform support for lis3lv02d accelerometer
Platform support for lis3lv02d accelerometer

Signed-off-by: Ameya Palande <ameya.palande@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:15 -07:00
Mans Rullgard
a0fcda3e12 ARM: OMAP2+: craneboard: register emac device
This adds the required am35xx_emac_init() call to the craneboard init
function.

Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:15 -07:00
Ricardo Neri
ce7962f9fa ARM: OMAP4: board-omap4panda: Register platform device for HDMI audio codec
Add platform device registratation for HDMI audio codec. This is to
be able to transmit audio through the HDMI output featured in Pandaboard
and PandaboardES boards.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:14 -07:00
Ricardo Neri
85dd0c59aa ARM: OMAP4: board-4430sdp: Register platform device for HDMI audio codec
Add platform device registratation for HDMI audio codec. This is to
be able to transmit audio through the HDMI output featured in SDP4430
and Blaze boards.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:14 -07:00
Ricardo Neri
5eeec21586 ARM: OMAP: devices: Register platform devices for HDMI audio
Add platform registration for the devices HDMI audio support. The
omap-hdmi-audio-dai platform device is to be used by the ASoC HDMI
CPU DAI driver. The omap-hdmi-audio platform device is to be used
by the ASoC HDMI machine driver that links together the ASOC CPU DAI,
ASoC plaform and ASoC codec drivers.

Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:14 -07:00
Javier Martinez Canillas
a42cf2c6c6 ARM: OMAP3: igep0020: Add support for Micron NAND Flash storage memory
IGEP-based boards can have two different flash memories, a OneNAND or
a NAND device. The boot configuration pins (sys_boot) are used to
specify which memory is available.

Also, this patch removes unnecesary code for registering the OneNAND.

Signed-off-by: Javier Martinez Canillas <javier@dowhile0.org>
Acked-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Tested-by: Enric Balletbo i Serra <eballetbo@gmail.com>
[tony@atomide.com: fixed up a minor checkpatch warning]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:14 -07:00
Javier Martinez Canillas
8259573b32 ARM: OMAP2+: nand: Make board_onenand_init() visible to board code
board_onenand_init() and board_nand_init() initialization functions are
used to initialize OneNAND and NAND memories respectively. But only
board_nand_init() was visible to be used from board code. This patch makes
possible to initialize a OneNAND flash memory within platform code.

Signed-off-by: Javier Martinez Canillas <javier@dowhile0.org>
Acked-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Tested-by: Enric Balletbo i Serra <eballetbo@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:14 -07:00
Igor Grinberg
d61676b8f0 ARM: OMAP3: cm-t35: add support for power off
Enable the power off feature of the TPS65930 on-board PMIC.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:13 -07:00
Mircea Gherzan
9624f61552 ARM: OMAP: WiLink platform data for the PandaBoard
The "uim" deamon requires sysfs entries that are filled in using
this platform data.

Signed-off-by: Mircea Gherzan <mgherzan@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:13 -07:00
Santosh Shilimkar
a78a4cbd41 ARM: OMAP2PLUS: Enable HIGHMEM
HIGMEM support in kernel is quite mature now and we have boards
like ZOOM, PANDA, SDP where 1 GB memories are installed. With
HIGHMEM disabled not all of the 1GB of RAM (only ~700MB) can be
accessed. Hence, enable HIGMEM to make use of the entire memory.

On the boards which doesn't have more than 768 MB memory, all
the memory is directly mapped in "lowmem" and highmem isn't
exercised. Hence, there should be no impact by enabling HIGHMEM
for boards that do not need it.

Tested on OMAP4460 Panda-ES.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Tested-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:13 -07:00
Govindraj.R
5d4e9971c8 ARM: OMAP: omap2plus_defconfig: Enable ehci-omap and sms95xx support
Boards like beagle and panda use ehci based smsc95xx lan chips
one has to manually enable these supports to get nfs working
on these boards. So keep these support enable by default.

Signed-off-by: Govindraj.R <govindraj.raja@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-05-09 14:19:13 -07:00
Olof Johansson
afeb36f128 ARM i.MX Eukrea Patches for 3.5
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Merge tag 'imx-eukrea' of git://git.pengutronix.de/git/imx/linux-2.6 into next/boards

ARM i.MX Eukrea Patches for 3.5

By Eric Bénard (11) and Denis Carikli (1)
via Sascha Hauer
* tag 'imx-eukrea' of git://git.pengutronix.de/git/imx/linux-2.6:
  ARM: imx: eukrea_mbimxsd rename to eukrea_mbimxsd51
  ARM: imx: eukrea_mbimxsd25: use IMX_GPIO_NR
  ARM: imx: eukrea_mbimxsd25: don't free twice GPIO_SWITCH1
  ARM: imx: eukrea_mbimxsd: add backlight and lcd support
  ARM: imx: eukrea_cpuimx51sd: support rev2 PCB
  ARM: imx: eukrea_mbimxsd: add audio support
  ARM: imx: eukrea_cpuimx51sd: add watchdog support
  ARM: imx: eukrea-cpuimx51: remove board
  ARM: imx: eukrea_mbimxsd35: add spi controler and spidev support
  ARM: imx: eukrea_cpuimx25: add watchdog support
  ARM: imx: eukrea_mbimxsd25: add spi controler and spidev support
  ARM: imx: eukrea_cpuimx25: enable workaround ENGcm09152
2012-05-09 02:57:26 -07:00
Olof Johansson
f1a9fa2381 Merge branch 'board-specific' of git://github.com/hzhuang1/linux into next/boards
By Paul Parsons (5) and others
via Haojian Zhuang
* 'board-specific' of git://github.com/hzhuang1/linux:
  pcmcia: add driver for hx4700
  ARM: pxa: Add standard UART to hx4700_pin_config[]
  ARM: mmp: add usb host support for aspen
  ARM: mmp: add usb host support for PXA168
  ARM: mmp: add usb device support for ttc dkb
  ARM: mmp: add usb device support for PXA910
  ARM: pxa: hx4700: Add PCMCIA/CF support
  ARM: pxa: hx4700: Enable ASIC3 GPIO as a wakeup source
  ARM: pxa: hx4700: Initialize DS1WM clock_rate
  ARM: pxa: mioa701 add camera output enable gpio
  ARM: pxa: use ioremap to access CPLD

Signed-off-by: Olof Johansson <olof@lixom.net>
2012-05-09 02:50:32 -07:00
Eric Bénard
53a02d11f1 ARM: imx: eukrea_mbimxsd rename to eukrea_mbimxsd51
this makes the mbimxsd51 board naming consistant with others

Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:25 +02:00
Eric Bénard
fc33d40007 ARM: imx: eukrea_mbimxsd25: use IMX_GPIO_NR
Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:25 +02:00
Eric Bénard
ee5dd09138 ARM: imx: eukrea_mbimxsd25: don't free twice GPIO_SWITCH1
Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:25 +02:00
Denis Carikli
13d1dd83a5 ARM: imx: eukrea_mbimxsd: add backlight and lcd support
Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:24 +02:00
Eric Bénard
7138a7f9ac ARM: imx: eukrea_cpuimx51sd: support rev2 PCB
rev1 were shipped with silicon 2.0, rev2 with silicon 3.0
so we are using the silicon version to know the PCB revision

Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:24 +02:00
Eric Bénard
932d67d4c8 ARM: imx: eukrea_mbimxsd: add audio support
Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:24 +02:00
Eric Bénard
f5c85d922c ARM: imx: eukrea_cpuimx51sd: add watchdog support
Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:24 +02:00
Eric Bénard
a88da8905f ARM: imx: eukrea-cpuimx51: remove board
this board is not publicly available and is replaced by cpuimx51sd

Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:24 +02:00
Eric Bénard
0e189858ff ARM: imx: eukrea_mbimxsd35: add spi controler and spidev support
Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:24 +02:00
Eric Bénard
4692cba14f ARM: imx: eukrea_cpuimx25: add watchdog support
Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:24 +02:00
Eric Bénard
49ed94075c ARM: imx: eukrea_mbimxsd25: add spi controler and spidev support
Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:23 +02:00
Eric Bénard
f381f9fc7b ARM: imx: eukrea_cpuimx25: enable workaround ENGcm09152
this fix usb device controler behaviour in gadget mode

Signed-off-by: Eric Bénard <eric@eukrea.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
2012-05-08 17:31:23 +02:00
Paul Parsons
95244306f6 pcmcia: add driver for hx4700
This patch adds support for the HP iPAQ hx4700 to the existing
pxa2xx-pcmcia driver.

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-05-07 09:56:39 +08:00
Paul Parsons
0de91b6182 ARM: pxa: Add standard UART to hx4700_pin_config[]
Add the two standard UART signals (GPIO46_STUART_RXD, GPIO47_STUART_TXD) to the
initial mfp config table hx4700_pin_config[] passed to pxa2xx_mfp_config().
Although pxa2xx_transceiver_mode() can subsequently set these two signals via
its own call to pxa2xx_mfp_config(), pxa2xx_transceiver_mode() is only present
when CONFIG_PXA_FICP=y. Hence this patch provides a default mfp config.

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Acked-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-05-05 17:05:22 +08:00
Neil Zhang
73578674f8 ARM: mmp: add usb host support for aspen
Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-05-05 17:00:25 +08:00
Neil Zhang
161105bcb8 ARM: mmp: add usb host support for PXA168
The ehci-mv can support PXA168, PXA910 and PXA920, use this driver to
support pxa168 SPH usb.

Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-05-03 15:06:05 +08:00
Neil Zhang
673eef9814 ARM: mmp: add usb device support for ttc dkb
There is an U2O OTG controller on ttc dkb, this patch is going to enable
it.
At this moment, it can only works in device mode, because when works in
host mode, it needs to supply vbus, but we have no vbus driver added
at this moment. Once the vbus driver is added, I'll prepar another
patch to enable the switch function.

Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-05-03 15:05:39 +08:00
Neil Zhang
75b1bdf51c ARM: mmp: add usb device support for PXA910
Add usb device support for Marvell PXA910.
Actually PXA920 will use the same device.

Signed-off-by: Neil Zhang <zhangwm@marvell.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-05-03 15:05:10 +08:00
Paul Parsons
1334d86b55 ARM: pxa: hx4700: Add PCMCIA/CF support
This patch is part of a set which adds PCMCIA/CF support for the hx4700.
This patch modifies asic3_gpio_config[] as follows:
1. Remove ASIC3_GPIOC4_CF_nCD, whose purpose is unknown.
2. Add ASIC3_GPIOD4_CF_nCD, the actual CF card detect GPIO.

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-05-03 09:55:30 +08:00
Paul Parsons
e949f93c59 ARM: pxa: hx4700: Enable ASIC3 GPIO as a wakeup source
This patch enables the ASIC3 GPIO (12) as a wakeup source:
1. Set the WAKEUP_ON_EDGE_RISE MFP config bits for GPIO12 in
hx4700_pin_config[].
2. Call gpio_set_wake() for GPIO12.

With GPIO12 thus enabled, the mfd/asic3 driver can enable its own GPIOs
as wakeup sources by implementing a irq_set_wake() handler.

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-05-03 09:51:20 +08:00
Paul Parsons
89619d44ee ARM: pxa: hx4700: Initialize DS1WM clock_rate
The asic3 driver now sets the DS1WM clock_rate from the newly added
asic3_platform_data clock_rate field.

This patch initializes the asic3_platform_data clock_rate field on the
hx4700 platform.

Signed-off-by: Paul Parsons <lost.distance@yahoo.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-05-03 09:49:10 +08:00
Tony Lindgren
a8822e2d57 Merge branch 'for_3.4/pm/smps-regulator' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm into pm-regulator
Conflicts:
	arch/arm/mach-omap2/twl-common.c
2012-04-30 10:08:29 -07:00
Linus Torvalds
69964ea4c7 Linux 3.4-rc5 v3.4-rc5 2012-04-29 15:19:10 -07:00
Linus Torvalds
6cfdd02b88 Power management fixes for 3.4
Fix for an issue causing hibernation to hang on systems with highmem (that
 practically means i386) due to broken memory management (bug introduced in 3.2,
 so -stable material) and PM documentation update making the freezer
 documentation follow the code again after some recent updates.
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Merge tag 'pm-for-3.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael J. Wysocki:
 "Fix for an issue causing hibernation to hang on systems with highmem
  (that practically means i386) due to broken memory management (bug
  introduced in 3.2, so -stable material) and PM documentation update
  making the freezer documentation follow the code again after some
  recent updates."

* tag 'pm-for-3.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / Freezer / Docs: Update documentation about freezing of tasks
  PM / Hibernate: fix the number of pages used for hibernate/thaw buffering
2012-04-29 15:00:44 -07:00
Linus Torvalds
64f371bc31 autofs: make the autofsv5 packet file descriptor use a packetized pipe
The autofs packet size has had a very unfortunate size problem on x86:
because the alignment of 'u64' differs in 32-bit and 64-bit modes, and
because the packet data was not 8-byte aligned, the size of the autofsv5
packet structure differed between 32-bit and 64-bit modes despite
looking otherwise identical (300 vs 304 bytes respectively).

We first fixed that up by making the 64-bit compat mode know about this
problem in commit a32744d4ab ("autofs: work around unhappy compat
problem on x86-64"), and that made a 32-bit 'systemd' work happily on a
64-bit kernel because everything then worked the same way as on a 32-bit
kernel.

But it turned out that 'automount' had actually known and worked around
this problem in user space, so fixing the kernel to do the proper 32-bit
compatibility handling actually *broke* 32-bit automount on a 64-bit
kernel, because it knew that the packet sizes were wrong and expected
those incorrect sizes.

As a result, we ended up reverting that compatibility mode fix, and
thus breaking systemd again, in commit fcbf94b9de.

With both automount and systemd doing a single read() system call, and
verifying that they get *exactly* the size they expect but using
different sizes, it seemed that fixing one of them inevitably seemed to
break the other.  At one point, a patch I seriously considered applying
from Michael Tokarev did a "strcmp()" to see if it was automount that
was doing the operation.  Ugly, ugly.

However, a prettier solution exists now thanks to the packetized pipe
mode.  By marking the communication pipe as being packetized (by simply
setting the O_DIRECT flag), we can always just write the bigger packet
size, and if user-space does a smaller read, it will just get that
partial end result and the extra alignment padding will simply be thrown
away.

This makes both automount and systemd happy, since they now get the size
they asked for, and the kernel side of autofs simply no longer needs to
care - it could pad out the packet arbitrarily.

Of course, if there is some *other* user of autofs (please, please,
please tell me it ain't so - and we haven't heard of any) that tries to
read the packets with multiple writes, that other user will now be
broken - the whole point of the packetized mode is that one system call
gets exactly one packet, and you cannot read a packet in pieces.

Tested-by: Michael Tokarev <mjt@tls.msk.ru>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Miller <davem@davemloft.net>
Cc: Ian Kent <raven@themaw.net>
Cc: Thomas Meyer <thomas@m3y3r.de>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-29 13:30:08 -07:00
Marcos Paulo de Souza
26e0f90fde PM / Freezer / Docs: Update documentation about freezing of tasks
The file Documentation/power/freezing-of-tasks.txt was still referencing
the TIF_FREEZE flag, that was removed by the commit
d88e4cb67197d007fb778d62fe17360e970d5bfa(freezer: remove now unused
TIF_FREEZE).

This patch removes all the references of TIF_FREEZE that were left
behind.

Signed-off-by: Marcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
2012-04-29 22:29:30 +02:00
Linus Torvalds
9883035ae7 pipes: add a "packetized pipe" mode for writing
The actual internal pipe implementation is already really about
individual packets (called "pipe buffers"), and this simply exposes that
as a special packetized mode.

When we are in the packetized mode (marked by O_DIRECT as suggested by
Alan Cox), a write() on a pipe will not merge the new data with previous
writes, so each write will get a pipe buffer of its own.  The pipe
buffer is then marked with the PIPE_BUF_FLAG_PACKET flag, which in turn
will tell the reader side to break the read at that boundary (and throw
away any partial packet contents that do not fit in the read buffer).

End result: as long as you do writes less than PIPE_BUF in size (so that
the pipe doesn't have to split them up), you can now treat the pipe as a
packet interface, where each read() system call will read one packet at
a time.  You can just use a sufficiently big read buffer (PIPE_BUF is
sufficient, since bigger than that doesn't guarantee atomicity anyway),
and the return value of the read() will naturally give you the size of
the packet.

NOTE! We do not support zero-sized packets, and zero-sized reads and
writes to a pipe continue to be no-ops.  Also note that big packets will
currently be split at write time, but that the size at which that
happens is not really specified (except that it's bigger than PIPE_BUF).
Currently that limit is the system page size, but we might want to
explicitly support bigger packets some day.

The main user for this is going to be the autofs packet interface,
allowing us to stop having to care so deeply about exact packet sizes
(which have had bugs with 32/64-bit compatibility modes).  But user
space can create packetized pipes with "pipe2(fd, O_DIRECT)", which will
fail with an EINVAL on kernels that do not support this interface.

Tested-by: Michael Tokarev <mjt@tls.msk.ru>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: David Miller <davem@davemloft.net>
Cc: Ian Kent <raven@themaw.net>
Cc: Thomas Meyer <thomas@m3y3r.de>
Cc: stable@kernel.org  # needed for systemd/autofs interaction fix
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-04-29 13:12:42 -07:00
Linus Torvalds
de9e24eda3 Staging tree fixes for 3.4-rc4
Here are some tiny drivers/staging/ bugfixes.  Some build fixes that
 were recently reported, as well as one kfree bug that is hitting a
 number of users.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging tree fixes from Greg Kroah-Hartman:
 "Here are some tiny drivers/staging/ bugfixes.  Some build fixes that
  were recently reported, as well as one kfree bug that is hitting a
  number of users."

* tag 'staging-3.4-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: ozwpan: Fix bug where kfree is called twice.
  staging: octeon-ethernet: fix build errors by including interrupt.h
  staging: zcache: fix Kconfig crypto dependency
  staging: tidspbridge: remove usage of OMAP2_L4_IO_ADDRESS
2012-04-29 12:19:13 -07:00
Linus Torvalds
8d7d1adcd7 USB fixes for 3.4-rc5
Here are a number of small USB fixes for 3.4-rc5.
 
 Nothing major, as before, some USB gadget fixes.  There's a crash fix
 for a number of ASUS laptops on resume that had been reported by a
 number of different people.  We think the fix might also pertain to
 other machines, as this was a BIOS bug, and they seem to travel to
 different models and manufacturers quite easily.  Other than that, some
 other reported problems fixed as well.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg Kroah-Hartman:
 "Here are a number of small USB fixes for 3.4-rc5.

  Nothing major, as before, some USB gadget fixes.  There's a crash fix
  for a number of ASUS laptops on resume that had been reported by a
  number of different people.  We think the fix might also pertain to
  other machines, as this was a BIOS bug, and they seem to travel to
  different models and manufacturers quite easily.  Other than that,
  some other reported problems fixed as well."

* tag 'usb-3.4-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
  usb: gadget: udc-core: fix incompatibility with dummy-hcd
  usb: gadget: udc-core: fix wrong call order
  USB: cdc-wdm: fix race leading leading to memory corruption
  USB: EHCI: fix crash during suspend on ASUS computers
  usb gadget: uvc: uvc_request_data::length field must be signed
  usb: gadget: dummy: do not call pullup() on udc_stop()
  usb: musb: davinci.c: add missing unregister
  usb: musb: drop __deprecated flag
  USB: gadget: storage gadgets send wrong error code for unknown commands
  usb: otg: gpio_vbus: Add otg transceiver events and notifiers
2012-04-29 12:17:54 -07:00
Linus Torvalds
f7b0069317 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
 "This has our collection of bug fixes.  I missed the last rc because I
  thought our patches were making NFS crash during my xfs test runs.
  Turns out it was an NFS client bug fixed by someone else while I tried
  to bisect it.

  All of these fixes are small, but some are fairly high impact.  The
  biggest are fixes for our mount -o remount handling, a deadlock due to
  GFP_KERNEL allocations in readdir, and a RAID10 error handling bug.

  This was tested against both 3.3 and Linus' master as of this morning."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (26 commits)
  Btrfs: reduce lock contention during extent insertion
  Btrfs: avoid deadlocks from GFP_KERNEL allocations during btrfs_real_readdir
  Btrfs: Fix space checking during fs resize
  Btrfs: fix block_rsv and space_info lock ordering
  Btrfs: Prevent root_list corruption
  Btrfs: fix repair code for RAID10
  Btrfs: do not start delalloc inodes during sync
  Btrfs: fix that check_int_data mount option was ignored
  Btrfs: don't count CRC or header errors twice while scrubbing
  Btrfs: fix btrfs_ioctl_dev_info() crash on missing device
  btrfs: don't return EINTR
  Btrfs: double unlock bug in error handling
  Btrfs: always store the mirror we read the eb from
  fs/btrfs/volumes.c: add missing free_fs_devices
  btrfs: fix early abort in 'remount'
  Btrfs: fix max chunk size check in chunk allocator
  Btrfs: add missing read locks in backref.c
  Btrfs: don't call free_extent_buffer twice in iterate_irefs
  Btrfs: Make free_ipath() deal gracefully with NULL pointers
  Btrfs: avoid possible use-after-free in clear_extent_bit()
  ...
2012-04-28 09:30:07 -07:00
Linus Torvalds
b990f9b3cb ARM: SoC fixes for 3.4-rc
Nothing controversial, just another batch of fixes:
 
 - Samsung/exynos fixes for more merge window fallout: build errors and
   warnings mostly, but also some clock/device setup issues on exynos4/5
 - PXA bug and warning fixes related to gpio and pinmux
 - IRQ domain conversion bugfixes for U300 and MSM
 - A regulator setup fix for U300
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "Nothing controversial, just another batch of fixes:

   - Samsung/exynos fixes for more merge window fallout: build errors
     and warnings mostly, but also some clock/device setup issues on
     exynos4/5
   - PXA bug and warning fixes related to gpio and pinmux
   - IRQ domain conversion bugfixes for U300 and MSM
   - A regulator setup fix for U300"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: PXA2xx: MFP: fix potential direction bug
  ARM: PXA2xx: MFP: fix bug with MFP_LPM_KEEP_OUTPUT
  arm/sa1100: fix sa1100-rtc memory resource
  ARM: pxa: fix gpio wakeup setting
  ARM: SAMSUNG: add missing MMC_CAP2_BROKEN_VOLTAGE capability
  ARM: EXYNOS: Fix compilation error when CONFIG_OF is not defined
  ARM: EXYNOS: Fix resource on dev-dwmci.c
  ARM: S3C24XX: Fix build warning for S3C2410_PM
  ARM: mini2440_defconfig: Fix build error
  ARM: msm: Fix gic irqdomain support
  ARM: EXYNOS: Fix incorrect initialization of GIC
  ARM: EXYNOS: use 'exynos4-sdhci' as device name for sdhci controllers
  ARM: u300: bump all IRQ numbers by one
  ARM: ux300: Fix unimplementable regulation constraints
2012-04-28 09:28:43 -07:00