26 Jul, 2011
40 commits
-
There have been persistent lockdep RCU splats, indicating that submitters
are not testing with CONFIG_PROVE_RCU. Add this config option to the list
in Documentation/SubmitChecklist. Also add CONFIG_DEBUG_OBJECTS_RCU_HEAD
for good measure.Signed-off-by: Paul E. McKenney
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Use hweight_long() to count free bits in the bitmap.
Signed-off-by: Akinobu Mita
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Using __test_and_{set,clear}_bit_le() with ignoring its return value can
be replaced with __{set,clear}_bit_le().This introduces reiserfs_{set,clear}_le_bit for __{set,clear}_bit_le and
does the above change with them.Signed-off-by: Akinobu Mita
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
When parsing PnP ACPI resource structures, it may happen that some of
the resources are disabled (in which case "the size" of the resource
equals zero).The current solution is to skip these resources completely - with the
unfortunate side effect that they are not registered despite the fact
that they exist, after all. (The downside of this approach is that
these resources cannot be used as templates for setting the actual
device's resources because they are missing from the template.) The
kernel's APM implementation does not suffer from this problem and
registers all resources regardless of "their size".This patch fixes a problem with (at least) the vintage IBM ThinkPad 600E
(and most likely also with the 600, 600X, and 770X which have a very
similar layout) where some of its PnP devices support options where
either an IRQ, a DMA, or an IO port is disabled. Without this patch,
the devices can not be configured using the
"/sys/bus/pnp/devices/*/resources" interface.The manipulation of these resources is important because the 600E has
very demanding requirements. For instance, the number of IRQs is not
sufficient to support all devices of the 600E. Fortunately, some of the
devices, like the sound card's MPU-401 UART, can be configured to not
use any IRQ, hence freeing an IRQ for a device that requires one.
(Still, the device's "ResourceTemplate" requires an IRQ resource
descriptor which cannot be created if the resource has not been
registered in the first place.)As an example, the dependent sets of the 600E's CSC0103 device (the
MPU-401 UART) are listed, with the patch applied, as:Dependent: 00 - Priority preferred
port 0x300-0x330, align 0xf, size 0x4, 16-bit address decoding
irq High-Edge
Dependent: 01 - Priority acceptable
port 0x300-0x330, align 0xf, size 0x4, 16-bit address decoding
irq 5,7,2/9,10,11,15 High-Edge(The same result is obtained when PNPBIOS is used instead of PnP ACPI.)
Without the patch, the IRQ resource in the preferred option is not
listed at all:Dependent: 00 - Priority preferred
port 0x300-0x330, align 0xf, size 0x4, 16-bit address decoding
Dependent: 01 - Priority acceptable
port 0x300-0x330, align 0xf, size 0x4, 16-bit address decoding
irq 5,7,2/9,10,11,15 High-EdgeAnd in fact, the 600E's DSDT lists the disabled IRQ as an option, as can
be seen from the following excerpt from the DSDT:Name (_PRS, ResourceTemplate ()
{
StartDependentFn (0x00, 0x00)
{
IO (Decode16, 0x0300, 0x0330, 0x10, 0x04)
IRQNoFlags () {}
}
StartDependentFn (0x01, 0x00)
{
IO (Decode16, 0x0300, 0x0330, 0x10, 0x04)
IRQNoFlags () {5,7,9,10,11,15}
}
EndDependentFn ()
})With this patch applied, a user space program - or maybe even the kernel
- can allocate all devices' resources optimally. For the 600E, this
means to find optimal resources for (at least) the serial port, the
parallel port, the infrared port, the MWAVE modem, the sound card, and
the MPU-401 UART.The patch applies the idea to register disabled resources to all types
of resources, not just to IRQs, DMAs, and IO ports. At the same time,
it mimics the behavior of the "pnp_assign_xxx" functions from
"drivers/pnp/manager.c" where resources with "no size" are considered
disabled.No regressions were observed on hardware that does not require this
patch.The patch is applied against 2.6.39.
NB: The kernel's current PnP interface does not allow for disabling individual
resources using the "/sys/bus/pnp/devices/$device/resources" file. Assuming
this could be done, a device could be configured to use a disabled resource
using a simple series of calls:echo disable > /sys/bus/pnp/devices/$device/resources
echo clear > /sys/bus/pnp/devices/$device/resources
echo set irq disabled > /sys/bus/pnp/devices/$device/resources
echo fill > /sys/bus/pnp/devices/$device/resources
echo activate > /sys/bus/pnp/devices/$device/resourcesThis patch addresses only the parsing of PnP ACPI devices.
ChangeLog (v1 -> v2):
- extend patch description
- fix typo in patch itselfSigned-off-by: Witold Szczeponik
Cc: Len Brown
Cc: Adam Belay
Cc: Bjorn Helgaas
Cc: Bjorn Helgaas
Cc: Henrique de Moraes Holschuh
Cc: Matthew Garrett
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Using __SPIN_LOCK_UNLOCKED for a dynamically allocated lock is wrong and
breaks the build with PREEMPT_RT_FULL.Signed-off-by: Uwe Kleine-König
Cc: Andrew Chew
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We forget to save the return value of the call to
twl_rtc_write_u8(save_control, REG_RTC_CTRL_REG); in 'ret', making the
test of 'ret < 0' dead code since 'ret' then couldn't possibly have
changed since the last test just a few lines above. It also makes us not
detect failures from that specific twl_rtc_write_u8() call.Signed-off-by: Jesper Juhl
Cc: Alessandro Zummo
Cc: Alexandre Rusev
Cc: "George G. Davis"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for PMIC8xxx based RTC. PMIC8xxx is Qualcomm's power
management IC that internally houses an RTC module. This driver
communicates with the PMIC module over SSBI bus.[akpm@linux-foundation.org: cosmetic tweaks]
Acked-by: Wan ZongShun
Reviewed-by: Stephen Boyd
Signed-off-by: Anirudh Ghayal
Signed-off-by: Ashay Jaiswal
Cc: Samuel Ortiz
Cc: Wan ZongShun
Cc: Alessandro Zummo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add support for clock gating. Power consumption can be reduced by setting
rtc_clk disabled state except for when RTC related registers are accessed.Signed-off-by: Donggeun Kim
Signed-off-by: MyungJoo Ham
Signed-off-by: KyungMin Park
Cc: Alessandro Zummo
Cc: Ben Dooks
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
MPC5200B contains a limited version of RTC from MPC5121. Add support for
the RTC on that CPU.Signed-off-by: Dmitry Eremin-Solenikov
Cc: Alessandro Zummo
Cc: Anatolij Gustschin
Cc: Grant Likely
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
For each CPU, do the calibration delay only once. For subsequent calls,
use the cached per-CPU value of loops_per_jiffy.This saves about 200ms of resume time on dual core Intel Atom N5xx based
systems. This helps bring down the kernel resume time on such systems
from about 500ms to about 300ms.[akpm@linux-foundation.org: make cpu_loops_per_jiffy static]
[akpm@linux-foundation.org: clean up message text]
[akpm@linux-foundation.org: fix things up after upstream rmk changes]
Signed-off-by: Sameer Nanda
Cc: Phil Carmody
Cc: Andrew Worsley
Cc: David Daney
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Both displays on digsy_mtc board obtain their configuration from microwire
EEPROMs which are connected to the SoC over GPIO lines. We need an easy
way to access the EEPROMs to write the needed display configuration or to
read out the currently programmed configuration. The generic
eeprom_93xx46 SPI driver added by previous patch allows EEPROM access over
sysfs. Using the simple driver added by this patch we provide used GPIO
interface and access control description on the board for generic
eeprom_93xx46 driver and spi_gpio driver.Signed-off-by: Anatolij Gustschin
Cc: Jonathan Cameron
Cc: Grant Likely
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add EEPROM driver for 93xx46 chips. It can also be used with spi_gpio
driver to access 93xx46 EEPROMs connected over GPIO lines. This driver
supports read/write/erase access to the EEPROM chips over sysfs files.[rdunlap@xenotime.net: fix printk format]
Signed-off-by: Anatolij Gustschin
Cc: Jonathan Cameron
Cc: Grant Likely
Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Previous behavior allowed only alphabetic prefixes like pr_info to exceed
the 80 column line length limit.ath6kl wants to add a digit into the prefix, so allow numbers as well as
digits in the _ printks.__ratelimited and __once and WARN_RATELIMIT
and WARN_ONCE may now exceed 80 cols.Add missing _printk type for completeness.
Signed-off-by: Joe Perches
Cc: Andy Whitcroft
Cc: Kalle Valo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some patches are sent in using ISO-8859 or even Windows codepage 1252.
Make checkpatch accept these by default and only emit the "Invalid UTF-8"
message when using --strict.Signed-off-by: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some users would like the ability to not emit some of the messages that
checkpatch produces. This can make it easier to use checkpatch in other
projects and integrate into scm hook scripts.Add command line option to "--ignore" various message types. Add option
--show-types to emit the "type" of each message. Categorize all ERROR,
WARN and CHK messages with types.Add optional .checkpatch.conf file to store default options.
3 paths are searched for .checkpatch.conf
. customized per-tree configurations
$HOME user global configuration when per-tree configs don't exist
./scripts lk defaults to override script
The .conf file can contain any valid command-line argument and
the contents are prepended to any additional command line arguments.
Multiple lines may be used, blank lines are ignored, # is a comment.Update "false positive" output for readability.
Update version to 0.32
Signed-off-by: Joe Perches
Acked-by: Mike Frysinger
Cc: Andy Whitcroft
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Prefer the use of __aligned(size) over __attribute__((__aligned___(size)))
Link: http://lkml.kernel.org/r/20110609094526.1571774c.akpm@linux-foundation.org
Suggested-by: Andrew Morton
Signed-off-by: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signatures have many forms and can sometimes cause problems if not in the
correct format when using git send-email or quilt.Try to verify the signature tags and email addresses to use the generally
accepted "Signed-off-by: Full Name " form.Original idea by Anish Kumar
Signed-off-by: Joe Perches
Cc: Anish Kumar
Cc: Nick Bowler
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix "need consistent spacing around '*'" error after a __rcu sparse
annotation which was caused by the missing __rcu entry in the
checkpatch.pl internal list of sparse keywords.Signed-off-by: Sven Eckelmann
Cc: Andy Whitcroft
Cc: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A common issue with min() or max() is using a cast on one or both of the
arguments when using min_t/max_t could be better.Add cast detection to uses of min/max and suggest an appropriate use of
min_t or max_t instead.Caveat: This only works for min() or max() on a single line.
It does not find min() or max() split across multiple lines.This does find:
min((u32)foo, bar);
But it does not find:
max((unsigned long)foo,
bar);Suggested-by: Andrew Morton
Signed-off-by: Joe Perches
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix module tainting message:
sigma: module license 'unspecified' taints kernel.
Signed-off-by: Randy Dunlap
Acked-by: Mike Frysinger
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This function is required by *printf and kstrto* functions that are
located in the different modules. This patch makes _tolower() public.
However, it's good idea to not use the helper outside of mentioned
functions.[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Andy Shevchenko
Acked-by: Alexey Dobriyan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The symbol 'lcm' is exported to the kernel (EXPORT_SYMBOL_GPL).
Pick up it's definition in to quiet the sparse noise:warning: symbol 'lcm' was not declared. Should it be static?
Signed-off-by: H Hartley Sweeten
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
From: Shreshtha Kumar Sahu
platform data for simple backlight driver for LM3530
in the u5500 platformSigned-off-by: Shreshtha Kumar Sahu
Signed-off-by: Linus Walleij
Cc: Richard Purdie
Cc: Lee Jones
Cc: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Provide the support for auto calibration of ALS Zone boundaries based on
min/max ALS input voltage.Signed-off-by: Shreshtha Kumar Sahu
Signed-off-by: Linus Walleij
Cc: Richard Purdie
Cc: Lee Jones
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We call led_classdev_register/led_classdev_unregister in
create_netxbig_led/delete_netxbig_led, thus make LEDS_NETXBIG depend on
LEDS_CLASS.This patch fixes below build error if LEDS_CLASS is not configured.
LD .tmp_vmlinux1
drivers/built-in.o: In function `create_netxbig_led':
drivers/leds/leds-netxbig.c:350: undefined reference to `led_classdev_register'
drivers/leds/leds-netxbig.c:361: undefined reference to `led_classdev_unregister'
drivers/built-in.o: In function `delete_netxbig_led':
drivers/leds/leds-netxbig.c:313: undefined reference to `led_classdev_unregister'Signed-off-by: Axel Lin
Cc: Richard Purdie
Acked-by: Simon Guinot
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
- return -ENOMEM if kzalloc fails, rather than the current -EINVAL
- fix a memory leak in the case of goto out_unregister_led_cdevs
Signed-off-by: Axel Lin
Cc: Richard Purdie
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Tag the and remove() function as __devexit respectively.
Signed-off-by: Linus Walleij
Cc: Richard Purdie
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
clockchips.h was typoed as clockevents.h
Signed-off-by: Joe Perches
Cc: Thomas Gleixner
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Entries that used formats other than "Proper Name "
were not parsed properly.Try to improve the parsing so that the entries in the forms of:
Proper Name
and
Proper Name Commit Name
are transformed correctly.Signed-off-by: Joe Perches
Reviewed-by: Florian Mickler
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If CONFIG_IKCONFIG=m but CONFIG_IKCONFIG_PROC=n we get a module that has
no MODULE_LICENSE definition. Move the MODULE_*() definitions outside the
CONFIG_IKCONFIG_PROC #ifdef to prevent this configuration from tainting
the kernel.Signed-off-by: Stephen Boyd
Acked-by: Randy Dunlap
Acked-by: WANG Cong
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It is not necessary to share the same notifier.h.
Signed-off-by: WANG Cong
Cc: David Miller
Cc: "Rafael J. Wysocki"
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It is not necessary to share the same notifier.h.
Signed-off-by: WANG Cong
Cc: David Miller
Acked-by: "Rafael J. Wysocki"
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It is not necessary to share the same notifier.h.
This patch already moves register_reboot_notifier() and
unregister_reboot_notifier() from kernel/notifier.c to kernel/sys.c.[amwang@redhat.com: make allyesconfig succeed on ppc64]
Signed-off-by: WANG Cong
Cc: David Miller
Cc: "Rafael J. Wysocki"
Cc: Greg KH
Signed-off-by: WANG Cong
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
It is not necessary to share the same notifier.h.
Signed-off-by: WANG Cong
Acked-by: David Miller
Cc: "Rafael J. Wysocki"
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We presently define all kinds of notifiers in notifier.h. This is not
necessary at all, since different subsystems use different notifiers, they
are almost non-related with each other.This can also save much build time. Suppose I add a new netdevice event,
really I don't have to recompile all the source, just network related.
Without this patch, all the source will be recompiled.I move the notify events near to their subsystem notifier registers, so
that they can be found more easily.This patch:
It is not necessary to share the same notifier.h.
Signed-off-by: WANG Cong
Cc: David Miller
Cc: "Rafael J. Wysocki"
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The FSA9480 is a USB port accessory detector and switch. This patch adds
support the FSA9480 USB Switch.[akpm@linux-foundation.org: make a couple of things static]
Signed-off-by: Donggeun Kim
Signed-off-by: Minkyu Kang
Signed-off-by: Kyungmin Park
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
As stated in drivers/mfd/cs5535-mfd.c, the mfd driver exposes the BARs
which then make the GPIO, MFGPT, ACPI, etc. all visible to the system.So the dependencies of the MFGPT stuff have changed, and most people
expect Kconfig to bring in the necessary dependencies. Without them, the
module fails to load and most people don't understand why because the
details of the rewrite aren't captured anywhere most people who know to
look.This dependency needs to be reflected in Kconfig.
Signed-off-by: Philip A. Prindeville
Acked-by: Alexandros C. Couloumbis
Acked-by: Andres Salomon
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fixes
WARNING: vmlinux.o(.data+0x15d3ac): Section mismatch in reference from the variable pci_eisa_driver to the function .init.text:pci_eisa_init()
The variable pci_eisa_driver references the function __init pci_eisa_init()
If the reference is valid then annotate the variable with __init* or __refdata (see linux/init.h) or name the variable:
*_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_consoleSigned-off-by: Arnaud Lacombe
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Unexpose to userland the following macros
- __FUNCTION__
- NUMA_BUILD
- COMPACTION_BUILD
- REBUILD_DUE_TO_FTRACE_MCOUNT_RECORDSigned-off-by: Arnaud Lacombe
Cc: Rusty Russell
Cc: KOSAKI Motohiro
Cc: Christoph Lameter
Cc: Mel Gorman
Cc: Steven Rostedt
Acked-by: WANG Cong
Cc: Michal Marek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix the warning:
usr/include/linux/kernel.h:65: userspace cannot reference function or variable defined in the kernel
As Michal noted, BUILD_BUG_ON stuffs should be moved
under #ifdef __KERNEL__.Signed-off-by: WANG Cong
Cc: Michal Marek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
