02 Oct, 2010
1 commit
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Signed-off-by: Thomas Renninger
Signed-off-by: Len Brown
07 Jul, 2010
1 commit
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After the previous patch that introduced acpi_gpe_wakeup() and
modified the ACPI suspend and wakeup code to use it, the third
argument of acpi_{enable|disable}_gpe() and the GPE wakeup
reference counter are not necessary any more. Remove them and
modify all of the users of acpi_{enable|disable}_gpe()
accordingly. Also drop GPE type constants that aren't used
any more.Signed-off-by: Rafael J. Wysocki
Signed-off-by: Len Brown
Signed-off-by: Bob Moore
Signed-off-by: Lin Ming
Signed-off-by: Len Brown
18 Jun, 2010
1 commit
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After commit 9630bdd9b15d2f489c646d8bc04b60e53eb5ec78
(ACPI: Use GPE reference counting to support shared GPEs) the wakeup
enable mask bits of GPEs are set as soon as the GPEs are enabled to
wake up the system. Unfortunately, this leads to a regression
reported by Michal Hocko, where a system is woken up from ACPI S5 by
a device that is not supposed to do that, because the wakeup enable
mask bit of this device's GPE is always set when
acpi_enter_sleep_state() calls acpi_hw_enable_all_wakeup_gpes(),
although it should only be set if the device is supposed to wake up
the system from the target state.To work around this issue, rework the ACPI power management code so
that GPEs are not enabled to wake up the system upfront, but only
during a system state transition when the target state of the system
is known. [Of course, this means that the reference counting of
"wakeup" GPEs doesn't really make sense and it is sufficient to
set/unset the wakeup mask bits for them during system sleep
transitions. This will allow us to simplify the GPE handling code
quite a bit, but that change is too intrusive for 2.6.35.]Fixes https://bugzilla.kernel.org/show_bug.cgi?id=15951
Signed-off-by: Rafael J. Wysocki
Reported-and-tested-by: Michal Hocko
Signed-off-by: Len Brown
30 Mar, 2010
1 commit
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…it slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
23 Feb, 2010
2 commits
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Use the run_wake flag to mark all devices for which run-time wake-up
events may be generated by the platform. Introduce a new wake-up
flag, always_enabled, for marking devices that should be permanently
enabled to generate run-time events. Also, introduce a reference
counter for run-wake devices and a function that will initialize all
of the run-time wake-up fields for given device.Signed-off-by: Rafael J. Wysocki
Acked-by: Len Brown
Signed-off-by: Jesse Barnes -
ACPI GPEs may map to multiple devices. The current GPE interface
only provides a mechanism for enabling and disabling GPEs, making
it difficult to change the state of GPEs at runtime without extensive
cooperation between devices.Add an API to allow devices to indicate whether or not they want
their device's GPE to be enabled for both runtime and wakeup events.Remove the old GPE type handling entirely, which gets rid of various
quirks, like the implicit disabling with GPE type setting. This
requires a small amount of rework in order to ensure that non-wake
GPEs are enabled by default to preserve existing behaviour.Based on patches from Matthew Garrett .
Signed-off-by: Matthew Garrett
Signed-off-by: Rafael J. Wysocki
Signed-off-by: Jesse Barnes
16 Dec, 2009
1 commit
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On some laptops it will return NOTIFY_OK(non-zero) when calling the ACPI LID
notifier. Then it is used as the result of ACPI LID resume function, which
will complain the following warning message in course of suspend/resume:>PM: Device PNP0C0D:00 failed to resume: error 1
This patch is to eliminate the above warning message.
http://bugzilla.kernel.org/show_bug.cgi?id=14782
Signed-off-by: Zhao Yakui
Signed-off-by: Len Brown
13 Oct, 2009
1 commit
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If a call comes in to check the lid state but there's no lid device
present, we should return -ENODEV.Signed-off-by: Jesse Barnes
Signed-off-by: Len Brown
25 Sep, 2009
1 commit
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* 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: (57 commits)
drm/i915: Handle ERESTARTSYS during page fault
drm/i915: Warn before mmaping a purgeable buffer.
drm/i915: Track purged state.
drm/i915: Remove eviction debug spam
drm/i915: Immediately discard any backing storage for uneeded objects
drm/i915: Do not mis-classify clean objects as purgeable
drm/i915: Whitespace correction for madv
drm/i915: BUG_ON page refleak during unbind
drm/i915: Search harder for a reusable object
drm/i915: Clean up evict from list.
drm/i915: Add tracepoints
drm/i915: framebuffer compression for GM45+
drm/i915: split display functions by chip type
drm/i915: Skip the sanity checks if the current relocation is valid
drm/i915: Check that the relocation points to within the target
drm/i915: correct FBC update when pipe base update occurs
drm/i915: blacklist Acer AspireOne lid status
ACPI: make ACPI button funcs no-ops if not built in
drm/i915: prevent FIFO calculation overflows on 32 bits with high dotclocks
drm/i915: intel_display.c handle latency variable efficiently
...Fix up trivial conflicts in drivers/gpu/drm/i915/{i915_dma.c|i915_drv.h}
11 Sep, 2009
1 commit
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Some drivers need to know when a lid event occurs and get the current
status. This can be useful for when a platform firmware clobbers some
hardware state at lid time, and a driver needs to restore things when
the lid is opened again.Acked-by: Matthew Garrett
Signed-off-by: Jesse Barnes
Signed-off-by: Eric Anholt
29 Aug, 2009
1 commit
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Linux/ACPI core files using internal.h all PREFIX "ACPI: ",
however, not all ACPI drivers use/want it -- and they
should not have to #undef PREFIX to define their own.Add GPL commment to internal.h while we are there.
This does not change any actual console output,
asside from a whitespace fix.Signed-off-by: Len Brown
11 Apr, 2009
6 commits
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This patch removes the driver distinction between control method (CM)
and fixed hardware (FF) buttons. We previously needed that so we
could install either a fixed event handler or a notify handler, but
the Linux/ACPI code now handles that for us, so we don't need to
worry about it.Note that this removes the FF/CM annotation from the "info" files
in /proc. For example,/proc/acpi/button/PWRF/info:
-type: Power Button (FF)
+type: Power ButtonI don't think there's anything meaningful user-space can do by
knowing whether a button is a control method or a fixed hardware
button, so nobody should be looking at the FF/CM.Signed-off-by: Bjorn Helgaas
Signed-off-by: Len Brown -
We no longer need a pointer from struct acpi_button back to the
struct acpi_device. Everywhere we used that pointer, we either
already have, or can easily get, the acpi_device pointer without
using the copy from acpi_button. So this patch removes the
structure element.Signed-off-by: Bjorn Helgaas
Signed-off-by: Len Brown -
This patch adds temporaries to cache the acpi_device_hid(),
acpi_device_name(), and acpi_device_class() pointers so we
don't have to clutter the code with so many uses of those
interfaces.Signed-off-by: Bjorn Helgaas
Signed-off-by: Len Brown -
It's typical and slightly more compact to look up the driver_data
structure by initializing the automatic variable at its definition.Signed-off-by: Bjorn Helgaas
Signed-off-by: Len Brown -
Better to oops and learn about a bug than to silently cover it up.
Signed-off-by: Bjorn Helgaas
Signed-off-by: Len Brown -
This patch changes a bit of whitespace to follow Linux conventions.
Signed-off-by: Bjorn Helgaas
Signed-off-by: Len Brown
05 Apr, 2009
1 commit
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This patch adds a .notify() method. The presence of .notify() causes
Linux/ACPI to manage event handlers and notify handlers on our behalf,
so we don't have to install and remove them ourselves.Note that events from fixed hardware buttons now show up as a special
notify event, so to preserve user-space backward compatibility, we
convert that back to ACPI_BUTTON_NOTIFY_STATUS.Signed-off-by: Bjorn Helgaas
Reviewed-by: Alex Chiang
CC: Alexey Starikovskiy
Signed-off-by: Len Brown
31 Mar, 2009
1 commit
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Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy
as correctly noted at bug #12454. Someone can lookup entry with NULL
->owner, thus not pinning enything, and release it later resulting
in module refcount underflow.We can keep ->owner and supply it at registration time like ->proc_fops
and ->data.But this leaves ->owner as easy-manipulative field (just one C assignment)
and somebody will forget to unpin previous/pin current module when
switching ->owner. ->proc_fops is declared as "const" which should give
some thoughts.->read_proc/->write_proc were just fixed to not require ->owner for
protection.rmmod'ed directories will be empty and return "." and ".." -- no harm.
And directories with tricky enough readdir and lookup shouldn't be modular.
We definitely don't want such modular code.Removing ->owner will also make PDE smaller.
So, let's nuke it.
Kudos to Jeff Layton for reminding about this, let's say, oversight.
http://bugzilla.kernel.org/show_bug.cgi?id=12454
Signed-off-by: Alexey Dobriyan
12 Nov, 2008
2 commits
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Disabling gpe might interfere with gpe detection/handling,
thus producing "interrupt not handled" errors.
Ironically, disabling of GPE from interrupt context is already
under spinlock, so only userspace needs to start using it.Signed-off-by: Alexey Starikovskiy
Signed-off-by: Len Brown
08 Nov, 2008
1 commit
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Move all the component definitions for drivers to a single shared place,
include/acpi/acpi_drivers.h.Signed-off-by: Bjorn Helgaas
Signed-off-by: Len Brown
25 Oct, 2008
1 commit
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Currently not always an EV_SYN event is reported to userland
after the EV_SW SW_LID event has been sent. This is easy to verify
by using “input-events” from input-utils and just closing and opening
the lid.Signed-off-by: Guillem Jover
Signed-off-by: Len Brown
23 Oct, 2008
1 commit
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Conflicts:
drivers/acpi/bay.c
drivers/acpi/dock.c
drivers/ata/libata-acpi.cSigned-off-by: Len Brown
11 Oct, 2008
2 commits
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As of version 2.0, ACPI can return 64-bit integers. The current
acpi_evaluate_integer only supports 64-bit integers on 64-bit platforms.
Change the argument to take a pointer to an acpi_integer so we support
64-bit integers on all platforms.lenb: replaced use of "acpi_integer" with "unsigned long long"
lenb: fixed bug in acpi_thermal_trips_update()Signed-off-by: Matthew Wilcox
Signed-off-by: Len Brown -
Catch attempts to use of acpi_driver_data on pointers of wrong type.
akpm: rewritten to use proper C typechecking and remove the
"function"-used-as-lvalue thing.Signed-off-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Len Brown
29 Apr, 2008
1 commit
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Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data
be setup before gluing PDE to main tree.Add correct ->owner to proc_fops to fix reading/module unloading race.
Signed-off-by: Denis V. Lunev
Cc: Len Brown
Cc: Alexey Dobriyan
Cc: "Eric W. Biederman"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
12 Mar, 2008
1 commit
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Signed-off-by: Andrey Borzenkov
Cc: Dmitry Torokhov
Signed-off-by: Andrew Morton
Signed-off-by: Len Brown
26 Oct, 2007
1 commit
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Input layer should know about initial state of lid switch,
even before first notify.Reference: https://bugzilla.novell.com/show_bug.cgi?id=326814
Signed-off-by: Alexey Starikovskiy
Acked-by: Rafael J. Wysocki
Signed-off-by: Len Brown
20 Oct, 2007
1 commit
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get rid of input BIT* duplicate defines
use newly global defined macros for input layer. Also remove includes of
input.h from non-input sources only for BIT macro definiton. Define the
macro temporarily in local manner, all those local definitons will be
removed further in this patchset (to not break bisecting).
BIT macro will be globally defined (1<
Cc:
Acked-by: Jiri Kosina
Cc:
Acked-by: Marcel Holtmann
Cc:
Acked-by: Mauro Carvalho Chehab
Cc:
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
24 Aug, 2007
1 commit
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Schedule /proc/acpi/event for removal in 6 months.
Re-name acpi_bus_generate_event() to acpi_bus_generate_proc_event()
to make sure there is no confusion that it is for /proc/acpi/event only.Add CONFIG_ACPI_PROC_EVENT to allow removal of /proc/acpi/event.
There is no functional change if CONFIG_ACPI_PROC_EVENT=ySigned-off-by: Len Brown
24 Jul, 2007
1 commit
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modpost is going to use these to create e.g. acpi:ACPI0001
in modules.alias.Signed-off-by: Thomas Renninger
Signed-off-by: Len Brown
13 Feb, 2007
3 commits
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Cosmetic only.
Except in a single case, #define ACPI_*_DRIVER_NAME
were invoked 0 or 1 times.Signed-off-by: Len Brown
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It was erroneously used as a description rather than a name.
ie. turn this:
lenb@se7525gp2:/sys> ls bus/acpi/drivers
ACPI AC Adapter Driver ACPI Embedded Controller Driver ACPI Power Resource Driver
ACPI Battery Driver ACPI Fan Driver ACPI Processor Driver
ACPI Button Driver ACPI PCI Interrupt Link Driver ACPI Thermal Zone Driver
ACPI container driver ACPI PCI Root Bridge Driver hpetinto this:
lenb@se7525gp2:~> ls /sys/bus/acpi/drivers
ac battery button container ec fan hpet pci_link pci_root power processor thermalSigned-off-by: Len Brown
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cosmetic only
Make "module name" actually match the file name.
Invoke with ';' as leaving it off confuses Lindent and gcc doesn't care.
Fix indentation where Lindent did get confused.Signed-off-by: Len Brown
03 Feb, 2007
1 commit
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Conflicts:
Documentation/feature-removal-schedule.txt
include/acpi/acpi_drivers.hSigned-off-by: Len Brown
01 Feb, 2007
1 commit
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ACPI_BUTTON_HID_POWERF was changed, but this change was not propogated to
button.c, thus breaking detection of fixed power and sleep buttons.Signed-off-by: Alexey Starikovskiy
Signed-off-by: Andrew Morton
Signed-off-by: Len Brown
09 Nov, 2006
1 commit
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In addition to signalling button/lid events through /proc/acpi/event,
create separate input devices and report KEY_POWER, KEY_SLEEP and
SW_LID through input layer. Also remove unnecessary casts and variable
initializations, clean up formatting.Sleep button may autorepeat but userspace will have to filter duplicate
sleep requests anyway (and discard unprocessed events right after
wakeup).Unlike /proc/acpi/event interface input device corresponding to LID
switch reports true lid state instead of just a counter. SW_LID is
active when lid is closed.The driver now depends on CONFIG_INPUT.
Signed-off-by: Dmitry Torokhov
Signed-off-by: Len Brown
10 Jul, 2006
1 commit
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Signed-off-by: Arjan van de Ven
Signed-off-by: Len Brown
30 Jun, 2006
1 commit
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Signed-off-by: Patrick Mochel
Signed-off-by: Len Brown
