Hans de Goede [Wed, 9 Mar 2011 19:57:12 +0000 (20:57 +0100)]
hwmon/f71882fg: Separate temp beep sysfs attr from the other temp sysfs attr
This is a preparation patch for adding support for more different models.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Hans de Goede [Wed, 9 Mar 2011 19:57:08 +0000 (20:57 +0100)]
hwmon/f71882fg: Remove bogus temp2_type for certain models
Remove the temp2_type sysfs files for f8000 / f71858fg models,
this got in accidentally and is wrong as these models don't have a
Temperature Sensor Type Register at all.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Hans de Goede [Wed, 9 Mar 2011 19:57:11 +0000 (20:57 +0100)]
hwmon/f71882fg: Make number of temps configurable
Make the temp sysattr array for the standard models a 2d array, which allows
to use it for models with less temperatures too. This is a preparation
patch for adding support for more different models.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Hans de Goede [Wed, 9 Mar 2011 19:57:10 +0000 (20:57 +0100)]
hwmon/f71882fg: Make creation of in sysfs attributes more generic
This is a preparation patch for adding support for more different models,
some of which have a sparse list of used voltage pins.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Hans de Goede [Wed, 9 Mar 2011 19:57:09 +0000 (20:57 +0100)]
hwmon/f71882fg: Only allow negative auto point temps if fan_neg_temp is enabled
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Hans de Goede [Wed, 9 Mar 2011 19:57:07 +0000 (20:57 +0100)]
hwmon/f71882fg: Fix temp1 sensor type reporting
The code for determining a sensort type for temp1 was based on me misreading
the datasheet, the tested registers do not determine what kind of sensor
is actually reported as temp1. Instead the enable / disable certain additional
digital sensor readouts throug PECI / AMDSI, etc. Independent of these settings
temp1 is still reading an external BJT or thermistor as configured by the
Temperature Sensor Type Register (0x6b).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Guenter Roeck [Thu, 10 Mar 2011 23:47:14 +0000 (15:47 -0800)]
hwmon: (w83627ehf) Display correct temperature sensor labels for systems with NCT6775F
Systems with NCT6775F reported temperature sensor labels for systems with
NCT6776F. This patch fixes the problem.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Ian Dobson [Mon, 7 Mar 2011 22:21:12 +0000 (14:21 -0800)]
hwmon: (w83627ehf) Add fan debounce support for NCT6775F and NCT6776F
NCT6776F and NCT6775F support debouncing the fan RPM signal. This can
help improve the stability of th RPM signal for some fans (Arctic cooling
fans for example).
This patch adds a module parameter fan_debounce, which when set to 1 enables
debounce for all fans that the chip supports.
Signed-off-by: Ian Dobson <i.dobson@planet-ian.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Guenter Roeck [Tue, 22 Feb 2011 16:20:51 +0000 (08:20 -0800)]
hwmon: (w83627ehf) Update Kconfig for W83677HG-B, NCT6775F and NCT6776F
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Guenter Roeck [Sun, 13 Feb 2011 21:08:23 +0000 (13:08 -0800)]
hwmon: (w83627ehf) Store rpm instead of raw fan speed data
Since the fan speed value can be above 0xff, we can no longer use
that value to determine if the fan speed reading is valid. This
makes it difficult to manipulate the stored fan speed register value.
If we store rpm instead of the fan speed register value, we do not
need to correct it if the fan divisor value is changed, and the above
mentioned problem no longer exists.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Guenter Roeck [Fri, 11 Feb 2011 16:00:58 +0000 (08:00 -0800)]
hwmon: (w83627ehf) Use 16 bit fan count registers if supported
Some of the chips supported by this driver have 13 bit or 16 bit fan count
registers. This patch improves support for those registers, specifically for
NCT6775F. With the changes in this patch, fan speed is reported correctly even
if the fan divider is set to a low value, which results in a fan speed reading
above 0xff.
With this patch, the width of fan count registers is no longer used to determine
if the chip has fan divider register(s) or not. A dedicated flag is used instead
to determine if this is the case.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Guenter Roeck [Wed, 2 Feb 2011 16:46:49 +0000 (08:46 -0800)]
hwmon: (w83627ehf) Add support for Nuvoton NCT6775F and NCT6776F
This patch adds support for NCT6775F and NCT6776F to the w83627ehf driver.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Tested-by: Ian Dobson <i.dobson@planet-ian.com> (NCT6776F)
Tested-by: Zachary Marzec <zmarzec@gmail.com> (ASUS P8P67 PRO/NCT6776F)
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Guenter Roeck [Mon, 14 Feb 2011 07:01:25 +0000 (23:01 -0800)]
hwmon: (w83627ehf) Permit enabling SmartFan IV mode if configured at startup
If SmartFan IV mode was configured at startup, it should be possible
to re-enable it later on.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Guenter Roeck [Mon, 14 Feb 2011 06:34:47 +0000 (22:34 -0800)]
hwmon: (w83627ehf) Convert register arrays to 16 bit, and convert access to pointers
For newer chips, several registers are banked and thus need to be 16 bit.
Also, register addresses change.
To prepare for those chips, convert affected register arrays to 16 bit,
and change access to those registers to array pointers in struct w83627ehf_data.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Guenter Roeck [Fri, 11 Feb 2011 16:10:53 +0000 (08:10 -0800)]
hwmon: (w83627ehf) Remove references to datasheets which no longer exist
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Guenter Roeck [Mon, 7 Feb 2011 23:08:54 +0000 (15:08 -0800)]
hwmon: (w83627ehf) Improve support for W83667HG-B
Add support for 4th temperature sensor on W83677HG-B.
Display temperature labels on W83677HG-B to report temperature sources.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Guenter Roeck [Sun, 6 Feb 2011 16:10:15 +0000 (08:10 -0800)]
hwmon: (w83627ehf) Optimize multi-bank register access
Assume that each register is banked, and set the bank for each access.
Cache the bank number so it only needs to be set if it changes.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Guenter Roeck [Fri, 4 Feb 2011 21:24:30 +0000 (13:24 -0800)]
hwmon: (w83627ehf) Fixed most checkpatch warnings and errors
This cleanup fixes most of the checkpatch warnings and errors in the w83627ehf
driver. Remaining warnings and errors are left untouched on purpose to avoid
making the code less readable.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Guenter Roeck [Fri, 4 Feb 2011 20:54:14 +0000 (12:54 -0800)]
hwmon: (w83627ehf) Unify temperature register access, and use strict string conversions
This patch unifies temperature register access, and replaces simple_strtoXXX
with strict_strtoXXX throughout the driver.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Ian Dobson <i.dobson@planet-ian.com>
Guenter Roeck [Wed, 2 Mar 2011 23:19:35 +0000 (15:19 -0800)]
hwmon: Add tachometer pulses per fan revolution to sysfs ABI
Some fan control chips support a configuration register to set the number of
tachometer pulses per fan revolution. Add an ABI attribute to support this
configuration register.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
per.dalen@appeartv.com [Thu, 3 Mar 2011 19:13:21 +0000 (14:13 -0500)]
hwmon: Add support for LTC4151
LTC4151 is High Voltage I2C Current and Voltage Monitor from Linear
Technology.
Signed-off-by: Per Dalen <per.dalen@appeartv.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Guenter Roeck [Tue, 8 Mar 2011 02:34:50 +0000 (18:34 -0800)]
hwmon: (pmbus) Fix LINEAR16 data format
LINEAR16 data format is unsigned, not signed. Impact is that affected
attributes report negative values in the upper half of the supported
value range.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Guenter Roeck [Sun, 6 Mar 2011 20:28:24 +0000 (12:28 -0800)]
hwmon: (pmbus) Continuously update temperature limit registers
PMBus only has one set of limit registers for up to three temperature sensors.
Thus, changing a limit for one of the temperature sensors affects limits for
other temperature sensors in the same page (and potentially multiple pages
depending on the chip implementation). To handle this situation, re-read all
temperature limit registers when updating sensor data. This way, all affected
temperature limits are updated whenever the limit for a single sensor is
changed.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Guenter Roeck [Sun, 6 Mar 2011 18:56:52 +0000 (10:56 -0800)]
hwmon: (pmbus) Improve support for paged temperature sensors
Assumption so far was that PMBus devices would support TEMP2 and TEMP3 registers
only on page 0, and that only the TEMP1 register would be used/supported
on other pages.
Turns out that is not correct. UCD92xx devices support TEMP1 and TEMP2 on
page 0, and TEMP2 on other pages. So it is necessary to change the core code
such that it does not make a page based assumptions about temperature register
support.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Guenter Roeck [Sat, 5 Mar 2011 15:55:10 +0000 (07:55 -0800)]
hwmon: (pmbus) Improve support for paged fans
So far, it seemed like fans would either all be in page 0, or that
there would be one page per fan.
Turns out this was a wrong assumption. There is at least one PMBus
fan controller which supports three pages with four fans each.
Update code to handle this situation.
Reported-by: Greg Schnorr <gschnorr@cisco.com>
Tested-by: Greg Schnorr <gschnorr@cisco.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Greg Schnorr <gschnorr@cisco.com>
Guenter Roeck [Tue, 1 Mar 2011 21:49:18 +0000 (13:49 -0800)]
hwmon: (pmbus) More stringent checking of VOUT_MODE register
Some PMBus chips do not support the VOUT_MODE register. To make matters worse,
such chips may not return an error when reading the register either, but instead
return 0xff.
Check if the register exists using pmbus_check_byte_register() before reading
its value. In addition, validate the returned value and ignore it if it is 0xff
(which is invalid).
Reported-by: Greg Schnorr <gschnorr@cisco.com>
Tested-by: Greg Schnorr <gschnorr@cisco.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Greg Schnorr <gschnorr@cisco.com>
Guenter Roeck [Thu, 27 Jan 2011 04:15:27 +0000 (20:15 -0800)]
hwmon: (pmbus) Add support for Maxim MAX34440/MAX34441
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Guenter Roeck [Thu, 27 Jan 2011 04:14:26 +0000 (20:14 -0800)]
hwmon: (pmbus) Add support for Maxim MAX16064
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Guenter Roeck [Thu, 27 Jan 2011 04:11:04 +0000 (20:11 -0800)]
hwmon: (pmbus) Add support for Maxim MAX8688
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Guenter Roeck [Mon, 28 Jun 2010 21:29:03 +0000 (14:29 -0700)]
hwmon: PMBus driver documentation
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Guenter Roeck [Thu, 27 Jan 2011 04:09:02 +0000 (20:09 -0800)]
hwmon: PMBus device driver
This driver adds support for hardware monitoring features of various PMBus
devices.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jonathan Cameron <jic23@cam.ac.uk>
Guenter Roeck [Sat, 19 Feb 2011 16:27:47 +0000 (08:27 -0800)]
hwmon: (lm85) Add support for EMC6D103S
EMC6D103S is similar to EMC6D103, only it does not support registers 62[5:7],
6D[0:7], and 6E[0:7]. Register respective sysfs attributes and update affected
registers for all other chips only.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Guenter Roeck [Fri, 25 Feb 2011 16:29:51 +0000 (08:29 -0800)]
hwmon: (lm85) Do not update hysteresis and temp_auto_off if auto_temp_min is changed
So far, the driver updates temp_auto_hyst and temp_auto_off if temp_auto_min changes.
This may cause problems if temp_auto_off was not configured before configuring
temp_auto_min, because one of the variables used (off_desired) is not initialized
in this case.
To simplify the code, and for consistency with other drivers, no longer update the delta
between "min" and "off" until the user sets the "off" value again.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Guenter Roeck [Fri, 25 Feb 2011 16:26:47 +0000 (08:26 -0800)]
hwmon: (lm85) Use function to remove sysfs attribute files
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Guenter Roeck [Fri, 25 Feb 2011 16:19:42 +0000 (08:19 -0800)]
hwmon: (lm85) Use boolean to determine if VID5 is configured
ADT7463 and ADT7468 optionally support VID5 instead of the standard +12V
measurement input. Use a boolean to identify the chip configuration instead of
hardcoding it several times.
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Guenter Roeck [Thu, 30 Sep 2010 03:12:08 +0000 (20:12 -0700)]
hwmon: Add support for Lineage Compact Power Line PEM devices
This patch adds support for hardware monitoring of Lineage Compact Power Line
Power Entry Modules.
Reviewed-by: Tom Grennan <tom.grennan@ericsson.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Mark Brown [Thu, 20 Jan 2011 21:27:56 +0000 (21:27 +0000)]
hwmon: (lis3lv02d) Convert SPI to dev_pm_ops
There is a move to deprecate bus-specific PM operations and move to
using dev_pm_ops instead in order to reduce the amount of boilerplate
code in buses and facilitiate updates to the PM core. Do this move for
the lis3lv02d SPI driver.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
stigge@antcom.de [Sat, 29 Jan 2011 16:04:01 +0000 (17:04 +0100)]
hwmon: (max6639) Set reasonable default PWM frequency
This patch initializes register CONFIG3 to a reasonable default PWM frequency
of 25kHz, to prevent audible sound in fan.
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
stigge@antcom.de [Thu, 20 Jan 2011 17:42:55 +0000 (18:42 +0100)]
hwmon: Driver for Maxim MAX6639
2-Channel Temperature Monitor with Dual PWM Fan-Speed Controller
Signed-off-by: Roland Stigge <stigge@antcom.de>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Linus Torvalds [Tue, 15 Mar 2011 01:20:32 +0000 (18:20 -0700)]
Linux 2.6.38
Linus Torvalds [Mon, 14 Mar 2011 22:20:39 +0000 (15:20 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/dhowells/linux-2.6-mn10300
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300:
MN10300: atomic_read() should ensure it emits a load
MN10300: The SMP_ICACHE_INV_FLUSH_RANGE IPI command does not exist
MN10300: Proper use of macros get_user() in the case of incremented pointers
Linus Torvalds [Mon, 14 Mar 2011 22:20:12 +0000 (15:20 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/upstream-linus
* 'upstream' of git://git.linux-mips.org/pub/scm/upstream-linus: (26 commits)
MIPS: Alchemy: Fix reset for MTX-1 and XXS1500
MIPS: MTX-1: Make au1000_eth probe all PHY addresses
MIPS: Jz4740: Add HAVE_CLK
MIPS: Move idle task creation to work queue
MIPS, Perf-events: Use unsigned delta for right shift in event update
MIPS, Perf-events: Work with the new callchain interface
MIPS, Perf-events: Fix event check in validate_event()
MIPS, Perf-events: Work with the new PMU interface
MIPS, Perf-events: Work with irq_work
MIPS: Fix always CONFIG_LOONGSON_UART_BASE=y
MIPS: Loongson: Fix potentially wrong string handling
MIPS: Fix GCC-4.6 'set but not used' warning in arch/mips/mm/init.c
MIPS: Fix GCC-4.6 'set but not used' warning in ieee754int.h
MIPS: Remove unused code from arch/mips/kernel/syscall.c
MIPS: Fix GCC-4.6 'set but not used' warning in signal*.c
MIPS: MSP: Fix MSP71xx bpci interrupt handler return value
MIPS: Select R4K timer lib for all MSP platforms
MIPS: Loongson: Remove ad-hoc cmdline default
MIPS: Clear the correct flag in sysmips(MIPS_FIXADE, ...).
MIPS: Add an unreachable return statement to satisfy buggy GCCs.
...
Linus Torvalds [Mon, 14 Mar 2011 22:19:09 +0000 (15:19 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip
* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
x86: ce4100: Set pci ops via callback instead of module init
x86/mm: Fix pgd_lock deadlock
x86/mm: Handle mm_fault_error() in kernel space
x86: Don't check for BIOS corruption in first 64K when there's no need to
Linus Torvalds [Mon, 14 Mar 2011 22:17:07 +0000 (15:17 -0700)]
Revert "oom: oom_kill_process: fix the child_points logic"
This reverts the parent commit. I hate doing that, but it's generating
some discussion ("half of it is right"), and since I am planning on
doing the 2.6.38 release later today we can punt it to stable if
required. Let's not rock the boat right now.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Oleg Nesterov [Mon, 14 Mar 2011 19:05:30 +0000 (20:05 +0100)]
oom: oom_kill_process: fix the child_points logic
oom_kill_process() starts with victim_points == 0. This means that
(most likely) any child has more points and can be killed erroneously.
Also, "children has a different mm" doesn't match the reality, we should
check child->mm != t->mm. This check is not exactly correct if t->mm ==
NULL but this doesn't really matter, oom_kill_task() will kill them
anyway.
Note: "Kill all processes sharing p->mm" in oom_kill_task() is wrong
too.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Florian Fainelli [Mon, 21 Feb 2011 13:28:02 +0000 (14:28 +0100)]
MIPS: Alchemy: Fix reset for MTX-1 and XXS1500
Since commit
32fd6901 (MIPS: Alchemy: get rid of common/reset.c)
Alchemy-based boards use their own reset function. For MTX-1 and XXS1500,
the reset function pokes at the BCSR.SYSTEM_RESET register, but this does
not work. According to Bruno Randolf, this was not tested when written.
Previously, the generic au1000_restart() routine called the board specific
reset function, which for MTX-1 and XXS1500 did not work, but finally made
a jump to the reset vector, which really triggers a system restart. Fix
reboot for both targets by jumping to the reset vector.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2093/
Acked-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Florian Fainelli [Sun, 27 Feb 2011 18:53:53 +0000 (19:53 +0100)]
MIPS: MTX-1: Make au1000_eth probe all PHY addresses
When au1000_eth probes the MII bus for PHY address, if we do not set
au1000_eth platform data's phy_search_highest_address, the MII probing
logic will exit early and will assume a valid PHY is found at address 0.
For MTX-1, the PHY is at address 31, and without this patch, the link
detection/speed/duplex would not work correctly.
CC: stable@kernel.org
Signed-off-by: Florian Fainelli <florian@openwrt.org>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2111/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Maurus Cuelenaere [Mon, 28 Feb 2011 23:20:01 +0000 (00:20 +0100)]
MIPS: Jz4740: Add HAVE_CLK
Jz4740 supports the clock framework but doesn't have HAVE_CLK defined,
so define it!
Signed-off-by: Maurus Cuelenaere <mcuelenaere@gmail.com>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2112/
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Maksim Rayskiy [Sat, 12 Feb 2011 18:21:32 +0000 (10:21 -0800)]
MIPS: Move idle task creation to work queue
To avoid forking usermode thread when creating an idle task, move fork_idle
to a work queue.
If kernel starts with maxcpus= option which does not bring all available
cpus online at boot time, idle tasks for offline cpus are not created. If
later offline cpus are hotplugged through sysfs, __cpu_up is called in
the context of the user task, and fork_idle copies its non-zero mm
pointer. This causes BUG() in per_cpu_trap_init.
This also avoids issues with resource limits of the CPU writing to sysfs,
containers, maybe others.
Signed-off-by: Maksim Rayskiy <mrayskiy@broadcom.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2070/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Deng-Cheng Zhu [Fri, 21 Jan 2011 08:19:21 +0000 (16:19 +0800)]
MIPS, Perf-events: Use unsigned delta for right shift in event update
Leverage the commit for ARM by Will Deacon:
-
446a5a8b1eb91a6990e5c8fe29f14e7a95b69132
ARM: 6205/1: perf: ensure counter delta is treated as unsigned
Hardware performance counters on ARM are 32-bits wide but atomic64_t
variables are used to represent counter data in the hw_perf_event structure.
The armpmu_event_update function right-shifts a signed 64-bit delta variable
and adds the result to the event count. This can lead to shifting in sign-bits
if the MSB of the 32-bit counter value is set. This results in perf output
such as:
Performance counter stats for 'sleep 20':
18446744073460670464 cycles <-- 0xFFFFFFFFF12A6000
7783773 instructions # 0.000 IPC
465 context-switches
161 page-faults
1172393 branches
20.
154242147 seconds time elapsed
This patch ensures that the delta value is treated as unsigned so that the
right shift sets the upper bits to zero.
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
To: a.p.zijlstra@chello.nl
To: fweisbec@gmail.com
To: will.deacon@arm.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: wuzhangjin@gmail.com
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: matt@console-pimps.org
Cc: sshtylyov@mvista.com
Patchwork: http://patchwork.linux-mips.org/patch/2015/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Deng-Cheng Zhu [Fri, 21 Jan 2011 08:19:20 +0000 (16:19 +0800)]
MIPS, Perf-events: Work with the new callchain interface
This is the MIPS part of the following commits by Frederic Weisbecker:
-
f72c1a931e311bb7780fee19e41a89ac42cab50e
perf: Factorize callchain context handling
Store the kernel and user contexts from the generic layer instead
of archs, this gathers some repetitive code.
-
56962b4449af34070bb1994621ef4f0265eed4d8
perf: Generalize some arch callchain code
- Most archs use one callchain buffer per cpu, except x86 that needs
to deal with NMIs. Provide a default perf_callchain_buffer()
implementation that x86 overrides.
- Centralize all the kernel/user regs handling and invoke new arch
handlers from there: perf_callchain_user() / perf_callchain_kernel()
That avoid all the user_mode(), current->mm checks and so...
- Invert some parameters in perf_callchain_*() helpers: entry to the
left, regs to the right, following the traditional (dst, src).
-
70791ce9ba68a5921c9905ef05d23f62a90bc10c
perf: Generalize callchain_store()
callchain_store() is the same on every archs, inline it in
perf_event.h and rename it to perf_callchain_store() to avoid
any collision.
This removes repetitive code.
-
c1a65932fd7216fdc9a0db8bbffe1d47842f862c
perf: Drop unappropriate tests on arch callchains
Drop the TASK_RUNNING test on user tasks for callchains as
this check doesn't seem to make any sense.
Also remove the tests for !current that is not supposed to
happen and current->pid as this should be handled at the
generic level, with exclude_idle attribute.
Reported-by: Wu Zhangjin <wuzhangjin@gmail.com>
Acked-by: Frederic Weisbecker <fweisbec@gmail.com>
Acked-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
To: a.p.zijlstra@chello.nl
To: will.deacon@arm.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: dengcheng.zhu@gmail.com
Cc: matt@console-pimps.org
Cc: sshtylyov@mvista.com
Patchwork: http://patchwork.linux-mips.org/patch/2014/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Deng-Cheng Zhu [Fri, 21 Jan 2011 08:19:19 +0000 (16:19 +0800)]
MIPS, Perf-events: Fix event check in validate_event()
Ignore events that are in off/error state or belong to a different PMU.
This patch originates from the following commit for ARM by Will Deacon:
-
65b4711ff513767341aa1915c822de6ec0de65cb
ARM: 6352/1: perf: fix event validation
The validate_event function in the ARM perf events backend has the
following problems:
1.) Events that are disabled count towards the cost.
2.) Events associated with other PMUs [for example, software events or
breakpoints] do not count towards the cost, but do fail validation,
causing the group to fail.
This patch changes validate_event so that it ignores events in the
PERF_EVENT_STATE_OFF state or that are scheduled for other PMUs.
Acked-by: Will Deacon <will.deacon@arm.com>
Acked-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
To: a.p.zijlstra@chello.nl
To: fweisbec@gmail.com
To: will.deacon@arm.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: wuzhangjin@gmail.com
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: dengcheng.zhu@gmail.com
Cc: matt@console-pimps.org
Cc: sshtylyov@mvista.com
Cc: ddaney@caviumnetworks.com
Patchwork: http://patchwork.linux-mips.org/patch/2013/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Deng-Cheng Zhu [Fri, 21 Jan 2011 08:19:18 +0000 (16:19 +0800)]
MIPS, Perf-events: Work with the new PMU interface
This is the MIPS part of the following commits by Peter Zijlstra:
-
a4eaf7f14675cb512d69f0c928055e73d0c6d252
perf: Rework the PMU methods
Replace pmu::{enable,disable,start,stop,unthrottle} with
pmu::{add,del,start,stop}, all of which take a flags argument.
The new interface extends the capability to stop a counter while
keeping it scheduled on the PMU. We replace the throttled state with
the generic stopped state.
This also allows us to efficiently stop/start counters over certain
code paths (like IRQ handlers).
It also allows scheduling a counter without it starting, allowing for
a generic frozen state (useful for rotating stopped counters).
The stopped state is implemented in two different ways, depending on
how the architecture implemented the throttled state:
1) We disable the counter:
a) the pmu has per-counter enable bits, we flip that
b) we program a NOP event, preserving the counter state
2) We store the counter state and ignore all read/overflow events
For MIPSXX, the stopped state is implemented in the way of 1.b as above.
-
33696fc0d141bbbcb12f75b69608ea83282e3117
perf: Per PMU disable
Changes perf_disable() into perf_pmu_disable().
-
24cd7f54a0d47e1d5b3de29e2456bfbd2d8447b7
perf: Reduce perf_disable() usage
Since the current perf_disable() usage is only an optimization,
remove it for now. This eases the removal of the __weak
hw_perf_enable() interface.
-
b0a873ebbf87bf38bf70b5e39a7cadc96099fa13
perf: Register PMU implementations
Simple registration interface for struct pmu, this provides the
infrastructure for removing all the weak functions.
-
51b0fe39549a04858001922919ab355dee9bdfcf
perf: Deconstify struct pmu
sed -ie 's/const struct pmu\>/struct pmu/g' `git grep -l "const struct pmu\>"`
Reported-by: Wu Zhangjin <wuzhangjin@gmail.com>
Acked-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
To: a.p.zijlstra@chello.nl
To: fweisbec@gmail.com
To: will.deacon@arm.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: wuzhangjin@gmail.com
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: dengcheng.zhu@gmail.com
Cc: matt@console-pimps.org
Cc: sshtylyov@mvista.com
Cc: ddaney@caviumnetworks.com
Patchwork: http://patchwork.linux-mips.org/patch/2012/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Deng-Cheng Zhu [Fri, 21 Jan 2011 08:19:17 +0000 (16:19 +0800)]
MIPS, Perf-events: Work with irq_work
This is the MIPS part of the following commit by Peter Zijlstra:
-
e360adbe29241a0194e10e20595360dd7b98a2b3
irq_work: Add generic hardirq context callbacks
Provide a mechanism that allows running code in IRQ context. It is
most useful for NMI code that needs to interact with the rest of the
system -- like wakeup a task to drain buffers.
Perf currently has such a mechanism, so extract that and provide it as
a generic feature, independent of perf so that others may also
benefit.
The IRQ context callback is generated through self-IPIs where
possible, or on architectures like powerpc the decrementer (the
built-in timer facility) is set to generate an interrupt immediately.
Architectures that don't have anything like this get to do with a
callback from the timer tick. These architectures can call
irq_work_run() at the tail of any IRQ handlers that might enqueue such
work (like the perf IRQ handler) to avoid undue latencies in
processing the work.
For MIPSXX, we need to call irq_work_run() at the tail of the perf IRQ
handler as described above.
Reported-by: Wu Zhangjin <wuzhangjin@gmail.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Deng-Cheng Zhu <dengcheng.zhu@gmail.com>
To: fweisbec@gmail.com
To: will.deacon@arm.com
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Cc: paulus@samba.org
Cc: mingo@elte.hu
Cc: acme@redhat.com
Cc: matt@console-pimps.org
Cc: sshtylyov@mvista.com,
Patchwork: http://patchwork.linux-mips.org/patch/2011/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Yoichi Yuasa [Mon, 7 Feb 2011 02:31:36 +0000 (11:31 +0900)]
MIPS: Fix always CONFIG_LOONGSON_UART_BASE=y
Signed-off-by: Yoichi Yuasa <yuasa@linux-mips.org>
Cc: linux-mips <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2055/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Stefan Weil [Sun, 30 Jan 2011 20:41:44 +0000 (21:41 +0100)]
MIPS: Loongson: Fix potentially wrong string handling
This error was reported by cppcheck:
arch/mips/loongson/common/machtype.c:56: error: Dangerous usage of 'str' (strncpy doesn't always 0-terminate it)
If strncpy copied MACHTYPE_LEN bytes, the destination string str
was not terminated.
The patch adds one more byte to str and makes sure that this byte is
always 0.
Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Cc: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Arnaud Patard <apatard@mandriva.com>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/2053/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Mon, 24 Jan 2011 22:51:37 +0000 (14:51 -0800)]
MIPS: Fix GCC-4.6 'set but not used' warning in arch/mips/mm/init.c
Under some combinations of CONFIG_*, lastpfn in page_is_ram is 'set
but not used'. Mark it as __maybe_unused to quiet the warning/error.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2033/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Mon, 24 Jan 2011 22:51:36 +0000 (14:51 -0800)]
MIPS: Fix GCC-4.6 'set but not used' warning in ieee754int.h
GCC-4.6 can find more unused code than previous versions could.
In the case of arch/mips/math-emu/ieee754int.h, the COMPXSP and
COMPXDP macros are used in several places, but a couple of them leave
xs unused. The easiest thing to do is mark it as __maybe_unused to
quiet the warning.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2032/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Mon, 24 Jan 2011 22:51:35 +0000 (14:51 -0800)]
MIPS: Remove unused code from arch/mips/kernel/syscall.c
The variable arg3 in _sys_sysmips() is unused. Remove it.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2034/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Mon, 24 Jan 2011 22:51:34 +0000 (14:51 -0800)]
MIPS: Fix GCC-4.6 'set but not used' warning in signal*.c
GCC-4.6 can find more unused code than previous versions could.
In the case of protected_restore_fp_context{,32}, the variable tmp is
really used. Its use is tricky in that we really care about the side
effects of the __put_user() calls. So we must mark tmp with
__maybe_unused to quiet the warning.
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2035/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Anoop P A [Thu, 18 Nov 2010 10:32:50 +0000 (16:02 +0530)]
MIPS: MSP: Fix MSP71xx bpci interrupt handler return value
Signed-off-by: Anoop P A <anoop.pa@gmail.com>
To: Ben Hutchings <ben@decadent.org.uk>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1804/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Anoop P A [Thu, 18 Nov 2010 08:12:28 +0000 (13:42 +0530)]
MIPS: Select R4K timer lib for all MSP platforms
Signed-off-by: Anoop P A <anoop.pa@gmail.com>
To: linux-mips@linux-mips.org
To: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/1803/
Tested-by: Shane McDonald <mcdonald.shane@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Robert Millan [Sun, 7 Nov 2010 12:38:29 +0000 (13:38 +0100)]
MIPS: Loongson: Remove ad-hoc cmdline default
Loongson builds have an ad-hoc cmdline default of "console=ttyS0,115200
root=/dev/hda1". These settings come from a vendor; I remember builds
from Lemote branch requiring a "console=tty" override in order to get a
working console.
At least on Yeeloong, they're particularly useless: there's no external
serial port, and the IDE drive is now recognised as /dev/sda.
Signed-off-by: Robert Millan <rmh@gnu.org>
To: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/1759/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Stefan Oberhumer [Mon, 17 Jan 2011 08:19:53 +0000 (09:19 +0100)]
MIPS: Clear the correct flag in sysmips(MIPS_FIXADE, ...).
The sysmips(MIPS_FIXADE, ...) case contains an obvious copy-and-paste
error in the handling of the TIF_LOGADE flag. Fix that
Patchwork: https://patchwork.linux-mips.org/patch/1997/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
David Daney [Wed, 19 Jan 2011 23:24:42 +0000 (15:24 -0800)]
MIPS: Add an unreachable return statement to satisfy buggy GCCs.
It was reported that GCC-4.3.3 (with CodeSourcery extensions) fails
without this.
Reported-by: Jonas Gorski <jonas.gorski@gmail.com>
Signed-off-by: David Daney <ddaney@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2010/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Wu Zhangjin [Fri, 21 Jan 2011 18:01:53 +0000 (02:01 +0800)]
MIPS, Tracing: Fix set_graph_function of function graph tracer
trace.func should be set to the recorded ip of the mcount calling site
in the __mcount_loc section to filter the function entries configured
through the tracing/set_graph_function interface, but before, this is
set to the self_ra(the return address of mcount), which has made
set_graph_function not work as expected.
This fixes it via calculating the right recorded ip in the __mcount_loc
section and assign it to trace.func.
Reported-by: Zhiping Zhong <xzhong86@163.com>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2017/
Signed-off-by: Ralf Baechle <ralf@duck.linux-mips.net>
Wu Zhangjin [Wed, 19 Jan 2011 19:28:31 +0000 (03:28 +0800)]
MIPS, Tracing: Clean up ftrace_make_nop()
This moves the comments out of ftrace_make_nop() and cleans it. At the
same time, a macro MCOUNT_OFFSET_INSNS is defined for sharing with the
next patch.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2008/
Signed-off-by: Ralf Baechle <ralf@duck.linux-mips.net>
Wu Zhangjin [Wed, 19 Jan 2011 19:28:30 +0000 (03:28 +0800)]
MIPS, Tracing: Clean up prepare_ftrace_return()
The old prepare_ftrace_return() for MIPS is confused and have introduced
some problem. This patch cleans up the names of the arguments, variables
and related functions.
For MIPS, the 2nd argument of prepare_ftrace_return() is not really the
'selfpc' described in ftrace-design.txt but instead it is the self
return address. This did break the compatibility of the generic
interface but really reduced one unneeded calculation for to get the
current function name, the parent return address and the self return
address are enough, no need to tranform the self return address to the
self address.
But set_graph_function of function graph tracer is an exception, it does
need the 2nd argument of prepare_ftrace_return() as 'selfpc', for it
will use 'selfpc' to match user's configuration of function graph
entries, but in reality, it doesn't need the 'selfpc' but the recorded
ip address of the mcount calling site in the __mcount_loc section. So,
the 2nd argument of prepare_ftrace_return() is not important, the real
requirement is the right recorded ip address should be calculated and
assign to trace.func, this will be fixed in the next patches.
Reported-by: Zhiping Zhong <xzhong86@163.com>
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2007/
Signed-off-by: Ralf Baechle <ralf@duck.linux-mips.net>
Wu Zhangjin [Wed, 19 Jan 2011 19:28:29 +0000 (03:28 +0800)]
MIPS, Tracing: Substitute in_kernel_space() for in_module()
The old in_module() may not work in some situations(e.g. when module &
kernel are in the same address space when CONFIG_MAPPED_KERNEL=y), The
in_kernel_space() is more generic and it is also easy to be implemented
via cloning the existing core_kernel_text(), so, replace the in_module()
with in_kernel_space().
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2005/
Signed-off-by: Ralf Baechle <ralf@duck.linux-mips.net>
Wu Zhangjin [Wed, 19 Jan 2011 19:28:27 +0000 (03:28 +0800)]
MIPS, Tracing: Speed up function graph tracer
This simply moves the "ip-=4" statement down to the end of the do { ...
} while (...); loop, which reduces one unneeded subtration and the
subsequent memory loading and comparison.
Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2006/
Signed-off-by: Ralf Baechle <ralf@duck.linux-mips.net>
Thomas Gleixner [Sun, 23 Jan 2011 15:17:00 +0000 (15:17 +0000)]
MIPS: Replace deprecated spinlock initialization
SPIN_LOCK_UNLOCK is deprecated. Use the lockdep capable variant instead.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/2025/
Signed-off-by: Ralf Baechle <ralf@duck.linux-mips.net>
Linus Torvalds [Mon, 14 Mar 2011 18:19:50 +0000 (11:19 -0700)]
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
NFS: NFSROOT should default to "proto=udp"
nfs4: remove duplicated #include
NFSv4: nfs4_state_mark_reclaim_nograce() should be static
NFSv4: Fix the setlk error handler
NFSv4.1: Fix the handling of the SEQUENCE status bits
NFSv4/4.1: Fix nfs4_schedule_state_recovery abuses
NFSv4.1 reclaim complete must wait for completion
NFSv4: remove duplicate clientid in struct nfs_client
NFSv4.1: Retry CREATE_SESSION on NFS4ERR_DELAY
sunrpc: Propagate errors from xs_bind() through xs_create_sock()
(try3-resend) Fix nfs_compat_user_ino64 so it doesn't cause problems if bit 31 or 63 are set in fileid
nfs: fix compilation warning
nfs: add kmalloc return value check in decode_and_add_ds
SUNRPC: Remove resource leak in svc_rdma_send_error()
nfs: close NFSv4 COMMIT vs. CLOSE race
SUNRPC: Close a race in __rpc_wait_for_completion_task()
Linus Torvalds [Mon, 14 Mar 2011 18:17:43 +0000 (11:17 -0700)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/radeon: fix problem with changing active VRAM size. (v2)
Linus Torvalds [Mon, 14 Mar 2011 17:15:43 +0000 (10:15 -0700)]
Merge git://git./linux/kernel/git/wim/linux-2.6-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
watchdog: hpwdt: eliminate section mismatch warning
watchdog: w83697ug_wdt: Fix set bit 0 to activate GPIO2
watchdog: sch311x_wdt: fix printk condition
watchdog: sch311x_wdt: Fix LDN active check
watchdog: cpwd: Fix buffer-overflow
Timo Warns [Mon, 14 Mar 2011 13:59:33 +0000 (14:59 +0100)]
Fix corrupted OSF partition table parsing
The kernel automatically evaluates partition tables of storage devices.
The code for evaluating OSF partitions contains a bug that leaks data
from kernel heap memory to userspace for certain corrupted OSF
partitions.
In more detail:
for (i = 0 ; i < le16_to_cpu(label->d_npartitions); i++, partition++) {
iterates from 0 to d_npartitions - 1, where d_npartitions is read from
the partition table without validation and partition is a pointer to an
array of at most 8 d_partitions.
Add the proper and obvious validation.
Signed-off-by: Timo Warns <warns@pre-sense.de>
Cc: stable@kernel.org
[ Changed the patch trivially to not repeat the whole le16_to_cpu()
thing, and to use an explicit constant for the magic value '8' ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Mon, 14 Mar 2011 08:08:47 +0000 (01:08 -0700)]
thp+memcg-numa: fix BUG at include/linux/mm.h:370!
THP's collapse_huge_page() has an understandable but ugly difference
in when its huge page is allocated: inside if NUMA but outside if not.
It's hardly surprising that the memcg failure path forgot that, freeing
the page in the non-NUMA case, then hitting a VM_BUG_ON in get_page()
(or even worse, using the freed page).
Signed-off-by: Hugh Dickins <hughd@google.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Howells [Mon, 14 Mar 2011 14:49:44 +0000 (14:49 +0000)]
MN10300: atomic_read() should ensure it emits a load
atomic_read() needs to ensure that it emits a load (which it can do by using
ACCESS_ONCE()).
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: David Howells <dhowells@redhat.com>
David Howells [Mon, 14 Mar 2011 14:45:29 +0000 (14:45 +0000)]
MN10300: The SMP_ICACHE_INV_FLUSH_RANGE IPI command does not exist
The invalidate-only versions of flush_icache_*range() are trying sending the
SMP_ICACHE_INV_FLUSH_RANGE IPI command in SMP kernels when they should be
sending SMP_ICACHE_INV_RANGE as the former does not exist.
Signed-off-by: David Howells <dhowells@redhat.com>
Tkhai Kirill [Mon, 14 Mar 2011 13:27:46 +0000 (13:27 +0000)]
MN10300: Proper use of macros get_user() in the case of incremented pointers
Using __get_user_check(x, ptr++, size) leads to double increment of pointer.
This macro uses the macro get_user directly, which itself is used in this way
(get_user(x, ptr++)) in some functions of the kernel. The patch fixes the
error.
Reported-by: Tkhai Kirill <tkhai@yandex.ru>
Signed-off-by: David Howells <dhowells@redhat.com>
Sebastian Andrzej Siewior [Mon, 14 Mar 2011 09:33:40 +0000 (10:33 +0100)]
x86: ce4100: Set pci ops via callback instead of module init
Setting the pci ops on subsys initcall unconditionally will break
multi platform kernels on anything except ce4100.
Use x86_init.pci.init ops to call this only on real ce4100 platforms.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: sodaville@linutronix.de
LKML-Reference: <
20110314093340.GA21026@www.tglx.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Axel Lin [Wed, 2 Mar 2011 03:49:44 +0000 (11:49 +0800)]
watchdog: hpwdt: eliminate section mismatch warning
hpwdt_init_nmi_decoding() is called in hpwdt_init_one error handling,
thus remove the __devexit annotation of hpwdt_exit_nmi_decoding().
This patch fixes below warning:
WARNING: drivers/watchdog/hpwdt.o(.devinit.text+0x36f): Section mismatch in reference from the function hpwdt_init_one() to the function .devexit.text:hpwdt_exit_nmi_decoding()
The function __devinit hpwdt_init_one() references
a function __devexit hpwdt_exit_nmi_decoding().
This is often seen when error handling in the init function
uses functionality in the exit path.
The fix is often to remove the __devexit annotation of
hpwdt_exit_nmi_decoding() so it may be used outside an exit section.
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Thomas Mingarelli <Thomas.Mingarelli@hp.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Wim Van Sebroeck [Mon, 21 Feb 2011 19:28:58 +0000 (19:28 +0000)]
watchdog: w83697ug_wdt: Fix set bit 0 to activate GPIO2
outb_p(c || 0x01, WDT_EFDR); -> || should be |
Reported-By: Toralf Förster <toralf.foerster@gmx.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Dan Carpenter [Wed, 23 Feb 2011 20:26:01 +0000 (23:26 +0300)]
watchdog: sch311x_wdt: fix printk condition
"==" has higher precedence than "&". Since
if (sch311x_sio_inb(sio_config_port, 0x30) & (0x01 == 0)) is always
false the message is never printed.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Wim Van Sebroeck [Mon, 21 Feb 2011 19:09:40 +0000 (19:09 +0000)]
watchdog: sch311x_wdt: Fix LDN active check
if (sch311x_sio_inb(sio_config_port, 0x30) && 0x01 == 0) -> && should be &
Reported-By: Toralf Förster <toralf.foerster@gmx.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Wim Van Sebroeck [Mon, 21 Feb 2011 10:52:43 +0000 (10:52 +0000)]
watchdog: cpwd: Fix buffer-overflow
cppcheck-1.47 reports:
[drivers/watchdog/cpwd.c:650]: (error) Buffer access out-of-bounds: p.devs
The source code is
for (i = 0; i < 4; i++) {
misc_deregister(&p->devs[i].misc);
where devs is defined as WD_NUMDEVS big and WD_NUMDEVS is equal to 3.
So the 4 should be a 3 or WD_NUMDEVS.
Reported-By: David Binderman
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Dave Airlie [Sun, 13 Mar 2011 23:47:24 +0000 (09:47 +1000)]
drm/radeon: fix problem with changing active VRAM size. (v2)
So we used to use lpfn directly to restrict VRAM when we couldn't
access the unmappable area, however this was removed in
93225b0d7bc030f4a93165347a65893685822d70 as it also restricted
the gtt placements. However it was only later noticed that this
broke on some hw.
This removes the active_vram_size, and just explicitly sets it
when it changes, TTM/drm_mm will always use the real_vram_size,
and the active vram size will change the TTM size used for lpfn
setting.
We should re-work the fpfn/lpfn to per-placement at some point
I suspect, but that is too late for this kernel.
Hopefully this addresses:
https://bugs.freedesktop.org/show_bug.cgi?id=35254
v2: fix reported useful VRAM size to userspace to be correct.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Al Viro [Sun, 13 Mar 2011 23:24:46 +0000 (23:24 +0000)]
compat breakage in preadv() and pwritev()
Fix for a dumb preadv()/pwritev() compat bug - unlike the native
variants, the compat_... ones forget to check FMODE_P{READ,WRITE}, so
e.g. on pipe the native preadv() will fail with -ESPIPE and compat one
will act as readv() and succeed.
Not critical, but it's a clear bug with trivial fix, so IMO it's OK for
-final.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 13 Mar 2011 23:01:11 +0000 (16:01 -0700)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/staging
* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
hwmon/f71882fg: Set platform drvdata to NULL later
hwmon/f71882fg: Fix a typo in a comment
Linus Torvalds [Sun, 13 Mar 2011 23:00:49 +0000 (16:00 -0700)]
Merge git://git./linux/kernel/git/mason/btrfs-unstable
* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
Btrfs: break out of shrink_delalloc earlier
btrfs: fix not enough reserved space
btrfs: fix dip leak
Btrfs: make sure not to return overlapping extents to fiemap
Btrfs: deal with short returns from copy_from_user
Btrfs: fix regressions in copy_from_user handling
Linus Torvalds [Sun, 13 Mar 2011 23:00:28 +0000 (16:00 -0700)]
Merge git://git./linux/kernel/git/jejb/scsi-rc-fixes-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
[SCSI] target: Fix t_transport_aborted handling in LUN_RESET + active I/O shutdown
Michal Marek [Fri, 11 Mar 2011 21:34:47 +0000 (22:34 +0100)]
kbuild: Fix computing srcversion for modules
Recent change to fixdep:
commit
b7bd182176960fdd139486cadb9962b39f8a2b50
Author: Michal Marek <mmarek@suse.cz>
Date: Thu Feb 17 15:13:54 2011 +0100
fixdep: Do not record dependency on the source file itself
changed the format of the *.cmd files without realizing that it is also
used by modpost. Put the path to the source file to the file back, in a
special variable, so that modpost sees all source files when calculating
srcversion for modules.
Reported-and-tested-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 13 Mar 2011 22:56:22 +0000 (15:56 -0700)]
Merge git://git.infradead.org/users/dwmw2/mtd-2.6.38
* git://git.infradead.org/users/dwmw2/mtd-2.6.38:
mtd: add "platform:" prefix for platform modalias
mtd: mtd_blkdevs: fix double free on error path
mtd: amd76xrom: fix oops at boot when resources are not available
mtd: fix race in cfi_cmdset_0001 driver
mtd: jedec_probe: initialise make sector erase command variable
mtd: jedec_probe: Change variable name from cfi_p to cfi
Linus Torvalds [Sun, 13 Mar 2011 22:52:48 +0000 (15:52 -0700)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6
* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
drm/radeon: fix page flipping hangs on r300/r400
drm/radeon: add pageflip hooks for fusion
Linus Torvalds [Sun, 13 Mar 2011 22:50:37 +0000 (15:50 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
block: fix mis-synchronisation in blkdev_issue_zeroout()
Linus Torvalds [Sun, 13 Mar 2011 22:50:01 +0000 (15:50 -0700)]
Merge branch 'fix/asoc' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'fix/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
ASoC: Ensure WM8958 gets all WM8994 late revision widgets
ASoC: Fix typo in late revision WM8994 DAC2R name
ASoC: Use the correct DAPM context when cleaning up final widget set
ASoC: Fix broken bitfield definitions in WM8978
ASoC: AM3517: Update codec name after multi-component update
Axel Lin [Fri, 11 Mar 2011 22:58:30 +0000 (14:58 -0800)]
gpio: add MODULE_DEVICE_TABLE
The device table is required to load modules based on modaliases.
After adding MODULE_DEVICE_TABLE, below entries will be added to
modules.pcimap:
pch_gpio 0x00008086 0x00008803 0xffffffff 0xffffffff 0x00000000 0x00000000 0x0
ml_ioh_gpio 0x000010db 0x0000802e 0xffffffff 0xffffffff 0x00000000 0x00000000 0x0
Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Tomoya MORINAGA <tomoya-linux@dsn.okisemi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andrea Arcangeli [Fri, 11 Mar 2011 22:58:29 +0000 (14:58 -0800)]
thp: fix page_referenced to modify mapcount/vm_flags only if page is found
When vmscan.c calls page_referenced(), if an anon page was created
before a process forked, rmap will search for it in both of the
processes, even though one of them might have since broken COW.
If the child process mlocks the vma where the COWed page belongs to,
page_referenced() running on the page mapped by the parent would lead to
*vm_flags getting VM_LOCKED set erroneously (leading to the references
on the parent page being ignored and evicting the parent page too
early).
*mapcount would also be decremented by page_referenced_one even if the
page wasn't found by page_check_address.
This also lets pmdp_clear_flush_young_notify() go ahead on a
pmd_trans_splitting() pmd.
We hold the page_table_lock so __split_huge_page_map() must wait the
pmdp_clear_flush_young_notify() to complete before it can modify the
pmd. The pmd is also still mapped in userland so the young bit may
materialize through a tlb miss before split_huge_page_map runs.
This will provide a more accurate page_referenced() behavior during
split_huge_page().
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reported-by: Michel Lespinasse <walken@google.com>
Reviewed-by: Michel Lespinasse <walken@google.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Rik van Riel<riel@redhat.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hans de Goede [Sun, 13 Mar 2011 12:50:33 +0000 (13:50 +0100)]
hwmon/f71882fg: Set platform drvdata to NULL later
This avoids a possible race leading to trying to dereference NULL.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@kernel.org
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Hans de Goede [Sun, 13 Mar 2011 12:50:32 +0000 (13:50 +0100)]
hwmon/f71882fg: Fix a typo in a comment
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Dave Airlie [Fri, 11 Mar 2011 11:17:41 +0000 (21:17 +1000)]
drm/radeon: fix page flipping hangs on r300/r400
We've been getting reports of complete system lockups with rv3xx hw on
AGP and PCIE when running gnome-shell or kwin with compositing.
It appears the hw really doesn't like setting these registers while
stuff is running, this moves the setting of the registers into the modeset
since they aren't required to be changed anywhere else.
fixes: https://bugs.freedesktop.org/show_bug.cgi?id=35183
Reported-and-tested-by: Álmos <aaalmosss@gmail.com
Signed-off-by: Dave Airlie <airlied@redhat.com>
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