Commit Graph

1977 Commits

Author SHA1 Message Date
Alexey Dobriyan 99b7623380 proc 2/2: remove struct proc_dir_entry::owner
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 <adobriyan@gmail.com>
2009-03-31 01:14:44 +04:00
Adam Buchbinder b731d7b6a7 trivial: Fix misspelling of "Celsius".
A few comments say "Celcius"; this fixes them. No code changes.

Signed-off-by: Adam Buchbinder <adam.buchbinder@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-03-30 15:22:03 +02:00
Zhang Rui 98758faffc ACPI video: add a warning message if _BQC is not found
ACPI backlight control w/o _BQC support is kinda firmware bug.
Add a warning if _BQC is not implemented.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 22:37:22 -04:00
Alexey Starikovskiy 7faa144a51 ACPI: battery: add power_{now,avg} properties to power_class
ACPI has smart batteries, which work in units of energy and measure
rate of (dis)charge as power, thus it is not appropriate to export it
as a current_now. Current_now will still be exported to allow
for userland applications to match.

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 22:23:52 -04:00
Matthew Garrett 74a365b3f3 ACPI: Populate DIDL before registering ACPI video device on Intel
Intel graphics hardware that implements the ACPI IGD OpRegion spec
requires that the list of display devices be populated before any ACPI
video methods are called. Detect when this is the case and defer
registration until the opregion code calls it. Fixes crashes on HP
laptops.

http://bugzilla.kernel.org/show_bug.cgi?id=11259

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 22:11:03 -04:00
Zhang Rui c60d638e29 ACPI video: support buggy BIOSes with _BCQ implemented
Some buggy BIOSes implements _BCQ instead of _BQC.
Male ACPI video driver support these buggy BIOS.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 21:57:30 -04:00
Zhang Rui 1a7c618a3f ACPI video: support _BQC/_BCL/_BCM methods that use index values
The input/output of _BQC/_BCL/_BCM control methods should be represented
by a number between 0 and 100, and can be thought of as a percentage.
But some buggy _BQC/_BCL/_BCM methods use the index values instead.
http://bugzilla.kernel.org/show_bug.cgi?id=12302
http://bugzilla.kernel.org/show_bug.cgi?id=12249
http://bugzilla.kernel.org/show_bug.cgi?id=12037

Add the functionality to support such kind of BIOSes in ACPI video driver.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Matthew Garrett <mjg59@srcf.ucam.org>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 21:56:45 -04:00
Zhang Rui d80fb99fdc ACPI video: support reversed _BCL method in ACPI video driver
The brightness levels returned by _BCL package are in a reversed order
on some laptops.
http://bugzilla.kernel.org/show_bug.cgi?id=12037
http://bugzilla.kernel.org/show_bug.cgi?id=12302
http://bugzilla.kernel.org/show_bug.cgi?id=12235

sort the _BCL packge in case it's reversed.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Matthew Garrett <mjg59@srcf.ucam.org>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 21:56:24 -04:00
Zhang Rui d32f69470c ACPI video: support _BCL packages that don't export brightness levels when machine is on AC/Battery
Many buggy BIOSes don't export the brightness levels when machine
is on AC/Battery in the _BCL method.

Reformat the _BCL package for these laptops:
now the elements in device->brightness->levels[] are like:
levels[0]: brightness level when on AC power.
levels[1]: brightness level when on Battery power.
levels[2]: supported brightness level 1.
levels[3]: supported brightness level 2.
...
levels[n]: supported brightness level n-1.
levels[n + 1]: supported brightness level n.
So if there are n supported brightness levels on this laptop,
we will have n+2 entries in device->brightnes->levels[].

level[0] and level[1] are invalid on the laptops that don't
export the brightness levels on AC/Battery.
Fortunately, we never use these two values at all, even for the
valid ones.

http://bugzilla.kernel.org/show_bug.cgi?id=12249

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Matthew Garrett <mjg59@srcf.ucam.org>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 21:55:58 -04:00
Zhang Rui 24450c7add ACPI video: check the return value of acpi_video_device_lcd_set_level
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Matthew Garrett <mjg59@srcf.ucam.org>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 21:55:23 -04:00
Zhang Rui c8890f903a ACPI video: check the return value of acpi_video_device_lcd_get_level_current
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Matthew Garrett <mjg59@srcf.ucam.org>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 21:48:29 -04:00
Stanislaw Gruszka e1eb47797a ACPI: Avoid wiping out pr->performance during preregistering
When cpufreq driver call acpi_processor_preregister_performance() , function
will clean up pr->performance even if there is possibly already registered
other cpufreq driver. The patch fix this potential problem. It also remove
double checks in P domain basic validity code and move these checks to function
where _PSD data is captured.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 21:11:55 -04:00
Bjorn Helgaas c0ce093f5b ACPI: remove unused acpi_device_ops .shutdown method
No drivers use the .shutdown method, so remove it.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 18:03:48 -04:00
Stephen Rothwell f6f5c45e06 ACPI: update thermal for bus_id removal
> drivers/acpi/thermal.c: In function 'thermal_notify':
> drivers/acpi/thermal.c:768: error: 'struct device' has no member named 'bus_id'
>
> Caused by commit b1569e99c7 ("ACPI: move
> thermal trip handling to generic thermal layer") interacting with commit
> d4a078fca590911cdf87a8eaffee1b6e643c2558 ("driver core: get rid of struct
> device's bus_id string array").
>

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 16:58:12 -04:00
Bjorn Helgaas 018f452e9d ACPI: tidy up makefile
This patch removes the suggestion that ec.o link order is important,
because it doesn't matter since acpi_ec_init() is no longer an initcall.
And it puts together most of the core modules that are not configurable.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:51:41 -04:00
Bjorn Helgaas 201b8c655f ACPI: call acpi_wakeup_device_init() explicitly rather than as initcall
This patch makes acpi_init() call acpi_wakeup_device_init() directly.
Previously, acpi_wakeup_device_init() was a late_initcall (sequence 7).

acpi_wakeup_device_init() depends on acpi_wakeup_device_list, which
is populated when ACPI devices are enumerated by acpi_init() ->
acpi_scan_init().  Using late_initcall is certainly enough to make
sure acpi_wakeup_device_list is populated, but it is more than
necessary.  We can just as easily call acpi_wakeup_device_init()
directly from acpi_init(), which avoids the initcall magic.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
CC: Li Shaohua <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:51:31 -04:00
Bjorn Helgaas 9cee43e079 ACPI: call acpi_sleep_proc_init() explicitly rather than as initcall
This patch makes acpi_init() call acpi_sleep_proc_init() directly.
Previously, acpi_sleep_proc_init() was a late_initcall (sequence 7),
apparently to make sure that the /proc hierarchy already exists:

    2003/02/13 12:38:03-06:00 mochel
    acpi sleep: demote sleep proc file creation.

    - Make acpi_sleep_proc_init() a late_initcall(), and not called from
      acpi_sleep_init(). This guarantees that the acpi proc hierarchy is at
      least there when we create the dang file.

This should no longer be an issue because acpi_bus_init() (called early
in acpi_init()) creates acpi_root_dir (/proc/acpi).

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:51:23 -04:00
Bjorn Helgaas 0e46517d96 ACPI: call init_acpi_device_notify() explicitly rather than as initcall
This patch makes acpi_init() call init_acpi_device_notify() directly.
Previously, init_acpi_device_notify() was an arch_initcall (sequence 3),
so it was called before acpi_init() (a subsys_initcall at sequence 4).

init_acpi_device_notify() sets the platform_notify and
platform_notify_remove function pointers.  These pointers
are not used until acpi_init() enumerates ACPI devices in
this path:

    acpi_init()
	    acpi_scan_init()
		acpi_bus_scan()
		    acpi_add_single_object()
			acpi_device_register()
			    device_add()
				<use platform_notify>

So it is sufficient to have acpi_init() call init_acpi_device_notify()
directly before it enumerates devices.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:51:16 -04:00
Bjorn Helgaas 84f810c33f ACPI: call acpi_debug_init() explicitly rather than as initcall
This patch makes acpi_init() call acpi_debug_init() directly.
Previously, both were subsys_initcalls.  acpi_debug_init()
must happen after acpi_init(), and it's better to call it
explicitly rather than rely on link ordering.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:50:29 -04:00
Bjorn Helgaas 141a0af3ca ACPI: call acpi_system_init() explicitly rather than as initcall
This patch makes acpi_init() call acpi_system_init() directly.
Previously, both were subsys_initcalls.  acpi_system_init()
must happen after acpi_init(), and it's better to call it
explicitly rather than rely on link ordering.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:50:19 -04:00
Bjorn Helgaas 44515374cb ACPI: call acpi_power_init() explicitly rather than as initcall
This patch makes acpi_init() call acpi_power_init() directly.
Previously, both were subsys_initcalls.  acpi_power_init()
must happen after acpi_init(), and it's better to call it
explicitly rather than rely on link ordering.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
CC: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:50:11 -04:00
Bjorn Helgaas a5f820feb5 ACPI: call acpi_ec_init() explicitly rather than as initcall
This patch makes acpi_init() call acpi_ec_init() directly.
Previously, both were subsys_initcalls.  acpi_ec_init()
must happen after acpi_init(), and it's better to call it
explicitly rather than rely on link ordering.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
CC: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:50:02 -04:00
Bjorn Helgaas e747f27495 ACPI: call acpi_scan_init() explicitly rather than as initcall
This patch makes acpi_init() call acpi_scan_init() directly.

Previously, both acpi_init() and acpi_scan_init() were subsys_initcalls,
and acpi_init() was called first based on the link order from the
makefile (bus.o before scan.o).

acpi_scan_init() registers the ACPI bus type, creates the root device,
and enumerates fixed-feature and namespace devices.  All of this must
be done after acpi_init(), and it's better to call acpi_scan_init()
explicitly rather than rely on the link ordering.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:49:47 -04:00
Bjorn Helgaas 81d0273df2 ACPI: skip DMI power state check when ACPI disabled
This patch makes acpi_init() exit early when ACPI is disabled.
This skips a DMI check that affects ACPI power management.   The
DMI check prints a notice that is misleading when ACPI is disabled.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:49:38 -04:00
Ingo Molnar 6e15cf0486 Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2
Conflicts:
	arch/parisc/kernel/irq.c
	arch/x86/include/asm/fixmap_64.h
	arch/x86/include/asm/setup.h
	kernel/irq/handle.c

Semantic merge:
        arch/x86/include/asm/fixmap.h

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-27 17:28:43 +01:00
Bob Moore 03ef132b72 ACPICA: Fix index value in package warning message
For predefined method validation. Index value in warning message
could be off by one.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:06 -04:00
Bob Moore f655630633 ACPICA: FADT: Favor 32-bit FACS and DSDT addresses
If both the 32-bit and 64-bit addresses are non-null, use the
32-bit address. Provides Windows compatibility.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:05 -04:00
Bob Moore 31fbc073a3 ACPICA: FADT: Favor 32-bit register addresses for compatibility
Use the 32-bit register addresses whenever they are non-zero. This
means that the 32-bit addresses are favored over the 64-bit
(GAS) addresses. The 64-bit addresses are only used if the 32-bit
addresses are zero. This change provides compatibility with all
versions of Windows. The worst case that this solves is when both
the 32-bit and 64-bit addresses are non-zero, but only the 32-bit
addresses are actually valid. This appears to happen in some
BIOSes because in this case, Windows uses the 32-bit addresses.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:05 -04:00
Bob Moore f28ad2c3da ACPICA: Fix PCI configuration space port address range
Microsoft website uses 0xCF8-0xD00. Should be 0xCF8-0xCFF (Two
32-bit registers.)

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:05 -04:00
Bob Moore ee6a0fbd0c ACPICA: Condense some protected ports
One entry in the protected port table eliminated. Added extra
comments to describe each table entry.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:05 -04:00
Bob Moore 91a56e631f ACPICA: Remove unused code, no functional change
Removed unused code for dump of args and locals. General cleanup
and splitting of long lines.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:04 -04:00
Lin Ming c3dd25f4c1 ACPICA: Clear PM register write-only bits on reading
Affects PM1 Control register only. When reading the register, zero
the write-only bits as per the ACPI spec.  ACPICA BZ 443. Lin Ming.

http://www.acpica.org/bugzilla/show_bug.cgi?id=443

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:03 -04:00
Bob Moore f9ca058430 ACPICA: Remove obsolete acpi_os_validate_address interface
This interface is no longer necessary. Requests should be validated
on a per-field basis, not on the entire operation region.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:03 -04:00
Bob Moore 7f07190390 ACPICA: New: I/O port protection
Protect certain I/O ports from reads/writes. Provides MS
compatibility. New module, hwvalid.c

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:03 -04:00
Bob Moore 20869dcfde ACPICA: Preserve all PM control reserved and ignored bits
As per the ACPI specification, preserve (read/modify/write) all
bits that are defined as either reserved or ignored (PM control
control registers only.)

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:03 -04:00
Bob Moore 8636f8d257 ACPICA: Change handling of PM1 Status register ignored bit
Ignored bits must be preserved according to the ACPI spec.
Usually this means a read/modify/write when writing to the
register.  However, for status registers, writing a one means
clear the event.  Writing a zero means preserve the event (do not
clear.) This behavior is clarified in the ACPI 4.0 spec, and the
ACPICA code now simply always writes a zero to the ignored bit.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:03 -04:00
Bob Moore 8a335a2331 ACPICA: Fix AcpiWalkNamespace race condition with table unload
Added a reader/writer locking mechanism to allow multiple
concurrent namespace walks (readers), but a dynamic table unload
will have exclusive access to the namespace. This fixes a problem
where a table unload could delete the portion of the namespace that
is currently being examined by a walk.  Adds a new file, utlock.c
that implements the reader/writer lock mechanism. ACPICA BZ 749.

http://www.acpica.org/bugzilla/show_bug.cgi?id=749

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:02 -04:00
Bob Moore aab61b676a ACPICA: FADT: Fix extraneous length mismatch warning
Incorrect register length mismatch between the 32 and 64 bit
registers in some cases. Code was was checking the wrong pointer
for non-zero, should be looking at the address within the GAS
structure.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:02 -04:00
Bob Moore d4913dc6d0 ACPICA: Formatting update - no functional changes
Split long lines, update comments.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:02 -04:00
Bob Moore 768aaaf196 ACPICA: Add manifest constants for bit register values
Add and deploy constants for the PM status/enable/control
registers.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-27 12:11:01 -04:00
David S. Miller 08abe18af1 Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
	drivers/net/wimax/i2400m/usb-notif.c
2009-03-26 15:23:24 -07:00
Bob Moore b6bc342dd5 ACPICA: Update table header print function
Cleanup table header output.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:32 -04:00
Bob Moore 88dcb04a81 ACPICA: Restructure bit register access functions
Update code for acpi_read_bit_register and acpi_write_bit_register.
Simplified code path, condensed duplicate code.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:31 -04:00
Bob Moore 50ffba1bd3 ACPICA: Rename ACPI bit register access functions
Rename acpi_get_register and acpi_set_register to clarify the
purpose of these functions. New names are acpi_read_bit_register
and acpi_write_bit_register.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:31 -04:00
Bob Moore 9892dd23cb ACPICA: Optimize ACPI register locking
Removed locking for reads from the ACPI bit registers in PM1
Status, Enable, Control, and PM2 Control. The lock is not required
when reading the single-bit registers. The acpi_get_register_unlocked
function is no longer needed and has been removed. This will
improve performance for reads on these registers.  ACPICA BZ 760.

http://www.acpica.org/bugzilla/show_bug.cgi?id=760

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:30 -04:00
Bob Moore ec41f193ea ACPICA: Formatting update - no functional changes
Split some long lines.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:29 -04:00
Bob Moore 7bcc06e845 ACPICA: Debug output: decrease verbosity of DB_INFO debug level
Removed some of the extraneous debug prints using the DB_INFO
level.  This should make the DB_INFO more useful.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:29 -04:00
Bob Moore c114e4b6c6 ACPICA: Debug output: print result of _OSI invocations
Print input strings and the result (supported or not supported)
for invocations of the _OSI method.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:28 -04:00
Bob Moore 4f70e371cd ACPICA: Conditionally compile acpi_set_firmware_waking_vector64
This function is only needed on 64-bit host operating systems.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:28 -04:00
Bob Moore 3371c19c29 ACPICA: Remove ACPI_GET_OBJECT_TYPE macro
Remove all instances of this obsolete macro, since it is now a
simple reference to ->common.type. There were about 150 invocations
of the macro across 41 files. ACPICA BZ 755.

http://www.acpica.org/bugzilla/show_bug.cgi?id=755

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:27 -04:00
Bob Moore 32c9ef994d ACPICA: Add function to handle PM1 control registers
Added acpi_hw_write_pm1_control. This function writes both of the PM1
control registers (A/B). These registers are different than than
the PM1 A/B status and enable registers in that different values
can be written to the A/B registers.  Most notably, the SLP_TYP
bits can be different, as per the values returned from the _Sx
predefined methods.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:26 -04:00
Bob Moore 82d79b8664 ACPICA: Remove redundant ACPI_BITREG_SLEEP_TYPE_B
This type is the same as TYPE_A. Removed this and all related
instances.  Renamed SLEEP_TYPE_A to simply SLEEP_TYPE.
ACPICA BZ 754.

http://www.acpica.org/bugzilla/show_bug.cgi?id=754

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:26 -04:00
Bob Moore ac0c845026 ACPICA: Fix parameter validation for acpi_read/write
Now return AE_BAD_PARAMETER if the input register pointer is
null, and AE_BAD_ADDRESS if the register has an address of zero.
Previously, these cases simply returned AE_OK. For optional
registers such as PM1B status/enable/control, the caller should
check for a valid register address before calling.  ACPICA BZ 748.

http://www.acpica.org/bugzilla/show_bug.cgi?id=748

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:25 -04:00
Bob Moore aefc7f9a02 ACPICA: For PM1B registers, do not shift value read or written
The PM1B registers are mirrors of the PM1A registers with
different bits actually implemented. From the ACPI specification:
"Although the bits can be split between the two register blocks
(each register block has a unique pointer within the FADT), the bit
positions are maintained. The register block with unimplemented
bits (that is, those implemented in the other register block)
always returns zeros, and writes have no side effects"

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:25 -04:00
Bob Moore 227243a04d ACPICA: Remove extra write for acpi_hw_clear_acpi_status
This function was writing an optional PM1B status register
twice.  The existing call to the low-level acpi_hw_register_write
automatically handles a possibly split PM1 A/B register.
ACPICA BZ 751.

http://www.acpica.org/bugzilla/show_bug.cgi?id=751

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:24 -04:00
Bob Moore c520abadbc ACPICA: Fix writes to optional PM1B registers
On read, shift B register bits above the A bits. On write,
shift B bits down to zero before writing the B register. New:
acpi_hw_read_multiple, acpi_hw_write_multiple. These two functions now
transparently handle the (possible) split registers for PM1 Status,
Enable, and Control.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:24 -04:00
Bob Moore d3319d1717 ACPICA: Update comments in module header
Enhance the explanations of the various package return types
for clarity.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:23 -04:00
Lin Ming 5e053e77f2 ACPICA: Check for non-zero address before being converted to GAS
Reported-by: FreeBSD community
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:23 -04:00
Bob Moore 531c633d2b ACPICA: Split out PM1 status registers from the FADT
Add new globals for the PM1 status registers (A/B), similar to the
way the PM1 enable registers are handled. Instead of overloading
the FADT Event Register blocks. This makes the code clearer and
less prone to error.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:22 -04:00
Bob Moore d3ccaff827 ACPICA: Add override for dynamic tables
Add a call to acpi_os_table_override during the installation of a
dynamic table (loaded via the Load or LoadTable AML operators).

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:20 -04:00
Bob Moore 97cbb7d196 ACPICA: Remove extraneous parameter in table manager
Removed the Flags parameter from several internal functions since
it was not being used.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:20 -04:00
Bob Moore ac5f98db7b ACPICA: Allow OS override of all ACPI tables
Previously, the table override mechanism was implemented for the
DSDT only. Now, any table in the RSDT/XSDT can be replaced by
the host OS. (including the DSDT).

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:19 -04:00
Bob Moore 4bbfb85da2 ACPICA: Add error check to debug object dump routine
Add check for invalid handle in acpi_ns_dump_one_object.

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-26 16:38:19 -04:00
Ming Lei f67f129e51 Driver core: implement uevent suppress in kobject
This patch implements uevent suppress in kobject and removes it
from struct device, based on the following ideas:

1,Uevent sending should be one attribute of kobject, so suppressing it
in kobject layer is more natural than in device layer. By this way,
we can do it for other objects embedded with kobject.

2,It may save several bytes for each instance of struct device.(On my
omap3(32bit ARM) based box, can save 8bytes per device object)

This patch also introduces dev_set|get_uevent_suppress() helpers to
set and query uevent_suppress attribute in case to help kobject
as private part of struct device in future.

[This version is against the latest driver-core patch set of Greg,please
ignore the last version.]

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-03-24 16:38:26 -07:00
Kenji Kaneshige 9f5404d8ea PCI/ACPI: rename pci_osc_control_set()
- Rename pci_osc_control_set() to acpi_pci_osc_control_set() according
  to the other API names in drivers/acpi/pci_root.c.

- Move _OSC related definitions to include/linux/acpi.h because _OSC
  related API is implemented in drivers/acpi/pci_root.c now.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Reviewed-by: Andrew Patterson <andrew.patterson@hp.com>
Tested-by: Andrew Patterson <andrew.patterson@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-19 19:29:33 -07:00
Kenji Kaneshige 63f10f0f6d PCI/ACPI: move _OSC code to pci_root.c
Move PCI _OSC management code from drivers/pci/pci-acpi.c to
drivers/acpi/pci_root.c. The benefits are

- We no longer need struct osc_data and its management code (contents
  are moved to struct acpi_pci_root). This simplify the code, and we
  no longer care about kmalloc() failure.

- We can make pci_acpi_osc_support() be a static function, which is
  called only from drivers/acpi/pci_root.c.

Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Reviewed-by: Andrew Patterson <andrew.patterson@hp.com>
Tested-by: Andrew Patterson <andrew.patterson@hp.com>
Acked-by: Alex Chiang <achiang@hp.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
2009-03-19 19:29:32 -07:00
Bjorn Helgaas e60cc7a6f0 ACPI: move private declarations to internal.h
A number of things that shouldn't be exposed outside the ACPI core
were declared in include/acpi/acpi_drivers.h, where anybody can
see them.  This patch moves those declarations to a new "internal.h"
inside drivers/acpi.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17 02:09:24 -04:00
Bjorn Helgaas 1c48aa36ef ACPI: update Kconfig help texts (no functional changes)
Use "help" (not "---help---") consistently throughout.

ACPI can't be a module, so if both ACPI & APM are configured,
we use ACPI.

Update pointers to ACPI CA and Linux ACPI projects.

Replace "Compaq" with "Hewlett-Packard" in the spec developer list.

Fix typo in /sys/module path.

The user-space daemon is "acpid", not "acpi".

Add standard "To compile this driver as a module ..." help text.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17 02:06:04 -04:00
Bjorn Helgaas c686d141c7 ACPI: PCI: use generic pci_swizzle_interrupt_pin()
Use the generic pci_swizzle_interrupt_pin() instead of ACPI-specific code.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17 01:56:30 -04:00
Bjorn Helgaas 5f0dccaa81 ACPI: pci_link: simplify list of link devices
We don't need a struct containing a count and a list_head; a simple
list_head is sufficient.  The list iterators handle empty lists
fine.

Furthermore, we don't need to check for null list entries because we
only add non-null entries.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17 01:53:29 -04:00
Bjorn Helgaas 6eca4b4ca1 ACPI: pci_link: remove unnecessary null pointer checks
Better to oops and learn about a bug than to silently cover it up.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17 01:52:40 -04:00
Bjorn Helgaas c9d6244329 ACPI: pci_link: remove unnecessary casts and initializations
Remove unnecessary casts and initializations.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17 01:52:18 -04:00
Bjorn Helgaas 1c9ca3a7d4 ACPI: pci_link: clean up whitespace
This patch makes whitespace and indentation more consistent.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17 01:51:36 -04:00
alex.shi ff69f2bba6 acpi: fix of pmtimer overflow that make Cx states time incorrect
We found Cx states time abnormal in our some of machines which have 16
LCPUs, the C0 take too many time while system is really idle when kernel
enabled tickless and highres.  powertop output is below:

     PowerTOP version 1.9       (C) 2007 Intel Corporation

Cn                Avg residency       P-states (frequencies)
C0 (cpu running)        (40.5%)         2.53 Ghz     0.0%
C1                0.0ms ( 0.0%)         2.53 Ghz     0.0%
C2              128.8ms (59.5%)         2.40 Ghz     0.0%
                                        1.60 Ghz   100.0%

Wakeups-from-idle per second :  4.7     interval: 20.0s
no ACPI power usage estimate available

Top causes for wakeups:
  41.4% ( 24.9)       <interrupt> : extra timer interrupt
  20.2% ( 12.2)     <kernel core> : usb_hcd_poll_rh_status
(rh_timer_func)

After tacking detailed for this issue, Yakui and I find it is due to 24
bit PM timer overflows when some of cpu sleep more than 4 seconds.  With
tickless kernel, the CPU want to sleep as much as possible when system
idle.  But the Cx sleep time are recorded by pmtimer which length is
determined by BIOS.  The current Cx time was gotten in the following
function from driver/acpi/processor_idle.c:

static inline u32 ticks_elapsed(u32 t1, u32 t2)
{
       if (t2 >= t1)
               return (t2 - t1);
       else if (!(acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER))
               return (((0x00FFFFFF - t1) + t2) & 0x00FFFFFF);
       else
               return ((0xFFFFFFFF - t1) + t2);
}

If pmtimer is 24 bits and it take 5 seconds from t1 to t2, in above
function, just about 1 seconds ticks was recorded.  So the Cx time will be
reduced about 4 seconds.  and this is why we see above powertop output.

To resolve this problem, Yakui and I use ktime_get() to record the Cx
states time instead of PM timer as the following patch.  the patch was
tested with i386/x86_64 modes on several platforms.

Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Tested-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Alex Shi <alex.shi@intel.com>
Signed-off-by: Yakui.zhao <yakui.zhao@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-17 01:13:46 -04:00
Cyrill Gorcunov 27ce341983 acpi: check for pxm_to_node_map overflow
It is hardly (if ever) possible but in case of broken _PXM entry we could
reach out of pxm_to_node_map array bounds in acpi_map_pxm_to_node() call.

Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-16 00:35:30 -04:00
Jiri Slaby 176f9c1804 ACPI: remove doubled status checking
There was a misplaced status test (two consequent tests without a
statement in between) in acpi_bus_init for ages.  Remove it, since the
function which should be checked (acpi_os_initialize1) has BUG_ONs on
failure paths.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-16 00:35:30 -04:00
Zhang Rui 45e7798886 ACPI suspend: Blacklist Toshiba Satellite L300 that requires to set SCI_EN directly on resume
This is a supplement of commit 65df78473f.
http://bugzilla.kernel.org/show_bug.cgi?id=12798

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-16 00:35:29 -04:00
Len Brown 7b46ecd5fc Revert "ACPI: make some IO ports off-limits to AML"
This reverts commit 5ec5d38a1c.
because it caused spurious dmesg warmings.
We'll implement the check for off-limit ports
in a more clever way in the future.

http://bugzilla.kernel.org/show_bug.cgi?id=12758

Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-16 00:35:29 -04:00
Andy Whitcroft a140449584 suspend: switch the Asus Pundit P1-AH2 to old ACPI sleep ordering
Switch the Asus Pundit P1-AH2 (M2N8L motherboard) to the old ACPI 1.0
sleep ordering by default.  Without this it will not suspend/resume
correctly.

Signed-off-by: Andy Whitcroft <apw@canonical.com>
Tested-by: Dustin Kirkland <kirkland@canonical.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-03-16 00:35:28 -04:00
Zhang Rui 4658e4ef9d ACPI: introduce sysfs I/F for dynamic tables
SSDT tables may be loaded at runtime.
create sysfs I/F for these dynamic tables in
/sys/firmware/acpi/tables/dynamic/.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-26 01:03:15 -05:00
Ingo Molnar 0edcf8d692 Merge branch 'tj-percpu' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc into core/percpu
Conflicts:
	arch/x86/include/asm/pgtable.h
2009-02-24 21:52:45 +01:00
Ingo Molnar a852cbfaaf Merge branches 'x86/acpi', 'x86/apic', 'x86/asm', 'x86/cleanups', 'x86/mm', 'x86/signal' and 'x86/urgent'; commit 'v2.6.29-rc6' into x86/core 2009-02-24 21:50:43 +01:00
David S. Miller e70049b9e7 Merge branch 'master' of /home/davem/src/GIT/linux-2.6/ 2009-02-24 03:50:29 -08:00
Jeremy Fitzhardinge 0d3a9cf5ab acpi: add some missing section markers
early_acpi_os_unmap_memory() is an __init function, and
acpi_os_unmap_memory() is allowed to access an __init function
until acpi_gbl_permanent_mmap is set up.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Len Brown <len.brown@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-23 00:10:47 +01:00
Ingo Molnar fc6fc7f1b1 Merge branch 'linus' into x86/apic
Conflicts:
	arch/x86/mach-default/setup.c

Semantic conflict resolution:
	arch/x86/kernel/setup.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-22 20:05:19 +01:00
Len Brown 5acfac5a64 Merge branches 'release', 'bugzilla-12011', 'bugzilla-12632', 'misc' and 'suspend' into release 2009-02-21 22:01:43 -05:00
Bjorn Helgaas ba193d64ab ACPI: remove CONFIG_ACPI_SYSTEM
Remove CONFIG_ACPI_SYSTEM.  It was always set the same as CONFIG_ACPI,
and it had no menu label, so there was no way to set it to anything
other than "y".

Some things under CONFIG_ACPI_SYSTEM (acpi_irq_handled, acpi_os_gpe_count(),
event_is_open, register_acpi_notifier(), etc.) are used unconditionally
by the CA, the OSPM, and drivers, so we depend on them always being
present.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-21 21:59:56 -05:00
Richard Hughes 56f382a087 battery: don't assume we are fully charged when not charging or discharging
On hardware like the T61 it can take a couple of seconds for the battery
to start charging after the power is connected, and we incorrectly tell
userspace that we are fully charged, and then go back to charging.

Only mark a battery as fully charged when the preset charge matches either
the last full charge, or the design charge.

http://bugzilla.kernel.org/show_bug.cgi?id=12632

Signed-off-by: Richard Hughes <hughsient@gmail.com>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-21 12:36:19 -05:00
Alexey Starikovskiy 5423a0cb3f ACPI: EC: Add delay for slow MSI controller
http://bugzilla.kernel.org/show_bug.cgi?id=12011

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-21 12:18:13 -05:00
Matthew Garrett b1569e99c7 ACPI: move thermal trip handling to generic thermal layer
The ACPI code currently carries its own thermal trip handling, meaning that
any other thermal implementation will need to reimplement it. Move the code
to the generic thermal layer.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-20 18:41:56 -05:00
Matthew Garrett 6503e5df08 thermal: use integers rather than strings for thermal values
The thermal API currently uses strings to pass values to userspace. This
makes it difficult to use from within the kernel. Change the interface
to use integers and fix up the consumers.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-20 10:52:37 -05:00
Rusty Russell b36128c830 alloc_percpu: change percpu_ptr to per_cpu_ptr
Impact: cleanup

There are two allocated per-cpu accessor macros with almost identical
spelling.  The original and far more popular is per_cpu_ptr (44
files), so change over the other 4 files.

tj: kill percpu_ptr() and update UP too

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: mingo@redhat.com
Cc: lenb@kernel.org
Cc: cpufreq@vger.kernel.org
Signed-off-by: Tejun Heo <tj@kernel.org>
2009-02-20 16:29:08 +09:00
David S. Miller 5e30589521 Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
	drivers/net/wireless/iwlwifi/iwl-agn.c
	drivers/net/wireless/iwlwifi/iwl3945-base.c
2009-02-14 23:12:00 -08:00
Yinghai Lu 7d97277b75 acpi/x86: introduce __apci_map_table, v4
to prevent wrongly overwriting fixmap that still want to use.

ACPI used to rely on low mappings being all linearly mapped and
grew a habit: it never really unmapped certain kinds of tables
after use.

This can cause problems - for example the hypothetical case
when some spurious access still references it.

v2: remove prev_map and prev_size in __apci_map_table
v3: let acpi_os_unmap_memory() call early_iounmap too, so remove extral calling to
early_acpi_os_unmap_memory
v4: fix typo in one acpi_get_table_with_size calling

Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09 13:35:07 +01:00
Jeremy Fitzhardinge 05876f88ed acpi: remove final __acpi_map_table mapping before setting acpi_gbl_permanent_mmap
On x86, __acpi_map_table uses early_ioremap() to create the mapping,
replacing the previous mapping with a new one.  Once enough of the
kernel is up an running it switches to using normal ioremap().  At
that point, we need to clean up the final mapping to avoid a warning
from the early_ioremap subsystem.

This can be removed after all the instances in the ACPI code are fixed
that rely on early-ioremap's implicit overmapping of previously
mapped tables.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Len Brown <len.brown@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-09 13:34:46 +01:00
Len Brown 2d29c6a075 Merge branches 'release', 'asus', 'bugzilla-12450', 'cpuidle', 'debug', 'ec', 'misc', 'printk' and 'processor' into release 2009-02-07 01:34:56 -05:00
Thierry Vignaud 370154bbef ACPI: Kconfig text - Fix the ACPI_CONTAINER module name according to the real module name.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-07 01:12:19 -05:00
Myron Stowe 386e4a8358 ACPICA: Fix table entry truncation calculation
During early boot, ACPI RSDT/XSDT table entries are gathered into the
'initial_tables[]' array.  This array is currently statically defined (see
./drivers/acpi/tables.c).  When there are more table entries than can be
held in the 'initial_tables[]' array, the message "Truncating N table
entries!" is output.  As currently implemented, this message will always
erroneously calculate N as 0.

This patch fixes the calculation that determines how many table entries
will be missing (truncated).

This modification may be used under either the GPL or the BSD-style
license used for Intel ACPI CA code.

Signed-off-by: Myron Stowe <myron.stowe@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-07 00:51:23 -05:00
Kay Sievers db1461ad43 ACPI: struct device - replace bus_id with dev_name(), dev_set_name()
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-07 00:41:13 -05:00
Frank Seidel 4d9391557b ACPI: add missing KERN_* constants to printks
According to kerneljanitors todo list all printk calls (beginning
a new line) should have an according KERN_* constant.
Those are the missing peaces here for the acpi subsystem.

Signed-off-by: Frank Seidel <frank@f-seidel.de>
Signed-off-by: Len Brown <len.brown@intel.com>
2009-02-07 00:29:32 -05:00