linux-toradex.git/drivers/acpi, branch v2.6.27.10

ACPI: delete OSI(Linux) DMI dmesg spam

2008-12-13T23:29:34+00:00

In 2.6.28 a6e0887f21bbab337ee32d9c0a84d7c0b6e9141b removed this code
because the linux-acpi community no longer needs the feedback
that these console messages solicit.

here in .stable, we apply a simpler version of that patch,
but for the exact same reasons.

Signed-off-by: Len Brown 
Signed-off-by: Greg Kroah-Hartman

ACPI suspend: Blacklist boxes that require us to set SCI_EN directly on resume

2008-12-13T23:29:14+00:00

commit 65df78473ffbf3bff5e2034df1638acc4f3ddd50 upstream.

Some Apple boxes evidently require us to set SCI_EN on resume
directly, because if we don't do that, they hung somewhere in the
resume code path.  Moreover, on these boxes it is not sufficient to
use acpi_enable() to turn ACPI on during resume.  All of this is
against the ACPI specification which states that (1) the BIOS is
supposed to return from the S3 sleep state with ACPI enabled
(SCI_EN set) and (2) the SCI_EN bit is owned by the hardware and we
are not supposed to change it.

For this reason, blacklist the affected systems so that the SCI_EN
bit is set during resume on them.

[NOTE: Unconditional setting SCI_EN for all system on resume doesn't
 work, because it makes some other systems crash (that's to be
 expected).  Also, it is not entirely clear right now if all of the
 Apple boxes require this workaround.]

This patch fixes the recent regression tracked as
http://bugzilla.kernel.org/show_bug.cgi?id=12038

Signed-off-by: Rafael J. Wysocki 
Tested-by: Tino Keitel 
Tested-by: Bob Copeland 
Signed-off-by: Len Brown 
Signed-off-by: Greg Kroah-Hartman

ACPI: EC: count interrupts only if called from interrupt handler.

2008-12-05T18:55:24+00:00

commit 7b4d469228a92a00e412675817cedd60133de38a upstream.

fix 2.6.28 EC interrupt storm regression

Signed-off-by: Alexey Starikovskiy 
Signed-off-by: Len Brown 
Cc: Alan Jenkins 
Signed-off-by: Greg Kroah-Hartman

PCI: update pci_create_slot() to take a 'hotplug' param

2008-12-05T18:55:16+00:00

commit 828f37683e6d3ab5912989df0d04201db7ad798e upstream.

Slot detection drivers can co-exist with hotplug drivers. The names
of the detected/claimed slots may be different depending on module
load order.

For legacy reasons, we need to allow hotplug drivers to override
the slot name if a detection driver is loaded first (and they find
the same slots).

Creating and overriding slot names should be an atomic operation,
otherwise you get a locking nightmare as various drivers race to
call pci_create_slot().

pci_create_slot() is already serialized by grabbing the pci_bus_sem.

We update the API and add a 'hotplug' param, which is:

	set if the caller is a hotplug driver
	NULL if the caller is a detection driver

pci_create_slot() does not actually use the 'hotplug' parameter in this
patch. A later patch will add the logic that uses it.

Cc: kristen.c.accardi@intel.com
Cc: matthew@wil.cx
Acked-by: Kenji Kaneshige 
Signed-off-by: Alex Chiang 
Signed-off-by: Jesse Barnes 
Signed-off-by: Greg Kroah-Hartman

ACPI: EC: Don't do transaction from GPE handler in poll mode.

2008-11-20T22:54:54+00:00

commit 8517934ef6aaa28d6e055b98df65b31cedbd1372 upstream.

Referencies: http://bugzilla.kernel.org/show_bug.cgi?id=12004

Signed-off-by: Alexey Starikovskiy 
Signed-off-by: Len Brown 
Cc: Rafael J. Wysocki 
Signed-off-by: Greg Kroah-Hartman

ACPI: EC: lower interrupt storm treshold

2008-11-20T22:54:53+00:00

commit 06cf7d3c7af902939cd1754abcafb2464060cba8 upstream.

http://bugzilla.kernel.org/show_bug.cgi?id=11892

Signed-off-by: Alexey Starikovskiy 
Signed-off-by: Len Brown 
Cc: Rafael J. Wysocki 
Signed-off-by: Greg Kroah-Hartman

ACPI: EC: restart failed command

2008-11-20T22:54:53+00:00

commit a2f93aeadf97e870ff385030633a73e21146815d upstream.

Restart current transaction if we recieved unexpected GPEs instead
of needed ones.

http://bugzilla.kernel.org/show_bug.cgi?id=11896

Signed-off-by: Alexey Starikovskiy 
Signed-off-by: Len Brown 
Cc: Rafael J. Wysocki 
Signed-off-by: Greg Kroah-Hartman

ACPI: EC: wait for last write gpe

2008-11-20T22:54:53+00:00

commit dd15f8c42af09031e27da5b4d697ce925511f2e1 upstream.

There is a possibility that EC might break if next command is
issued within 1 us after write or burst-disable command.

Suggestd-by: Zhao Yakui 
Signed-off-by: Alexey Starikovskiy 
Signed-off-by: Len Brown 
Cc: Rafael J. Wysocki 
Signed-off-by: Greg Kroah-Hartman

ACPI: EC: revert msleep patch

2008-11-20T22:54:53+00:00

commit 1cfe62c8010ac56e1bd3827e30386a87cc2f3594 upstream.

With the better solution for EC interrupt storm issue,
there is no need to use msleep over udelay.

References:
	http://bugzilla.kernel.org/show_bug.cgi?id=11810
	http://bugzilla.kernel.org/show_bug.cgi?id=10724

Signed-off-by: Alexey Starikovskiy 
Signed-off-by: Len Brown 
Cc: Rafael J. Wysocki 
Signed-off-by: Greg Kroah-Hartman

ACPI : Load device driver according to the status of acpi device

2008-11-20T22:54:49+00:00

commit 39a0ad871000d2a016a4fa113a6e53d22aabf25d upstream.

According to ACPI spec when the status of some device is not present
but functional, the device is valid and the children of this device
should be enumerated. It means that the device should be added to
linux acpi device tree. But the device driver for this device should not
be loaded.
    The detailed info can be found in the section 6.3.7 of ACPI 3.0b spec.
    _STA may return bit 0 clear (not present) with bit 3 set (device is
functional). This case is used to indicate a valid device for which no
device driver should be loaded (for example, a bridge device.).
Children of this device may be present and valid. OS should continue
enumeration below a device whose _STA returns this bit combination

http://bugzilla.kernel.org/show_bug.cgi?id=3358

Signed-off-by: Zhao Yakui 
Signed-off-by: Li Shaohua 
Signed-off-by: Zhang Rui 
Signed-off-by: Andi Kleen 
Signed-off-by: Len Brown 
Cc: Holger Macht 
Signed-off-by: Greg Kroah-Hartman