2.6.28-rc6-mmotm1126 - acpi AE_AM_INFINITE_LOOP errors..

From: Valdis . Kletnieks
Date: Wed Nov 26 2008 - 11:16:22 EST

I wasn't seeing these in -rc5-1117.
Am suspecting this commit or related:

commit 9c8573ca6e35f327d53cb46aba017b95e05d8e08
Author: Bob Moore <robert.moore@xxxxxxxxx>
Date: Wed Nov 12 15:15:29 2008 +0800

ACPICA: Add a mechanism to escape infinite AML While() loops

Add a loop counter to force exit from AML While loops if the
count becomes too large. This can occur in poorly written AML
when the hardware does not respond within a while loop and the
loop does not implement a timeout. The maximum loop count is
configurable. A new exception code is returned when a loop is
broken, AE_AML_INFINITE_LOOP. Bob Moore, Alexey Starikovskiy.

Signed-off-by: Bob Moore <robert.moore@xxxxxxxxx>
Signed-off-by: Lin Ming <ming.m.lin@xxxxxxxxx>
Signed-off-by: Len Brown <len.brown@xxxxxxxxx>

This is a Dell Latitude D820, and didn't seem to have any infinite AML
loops to escape, at least none that I actually hit with previous kernels...

[ 14.500963] usb 3-1.2: new full speed USB device using uhci_hcd and address 3
[ 14.508930] ACPI Error (psparse-0536): Method parse/execution failed [\SXX6] (Node ffff88007f851a98), AE_AML_INFINITE_LOOP
[ 14.508973] ACPI Error (psparse-0536): Method parse/execution failed [\SXX4] (Node ffff88007f851a58), AE_AML_INFINITE_LOOP
[ 14.509001] ACPI Error (psparse-0536): Method parse/execution failed [\SX11] (Node ffff88007f8519f8), AE_AML_INFINITE_LOOP
[ 14.509029] ACPI Error (psparse-0536): Method parse/execution failed [\_TZ_.THM_.GINF] (Node ffff88007f858858), AE_AML_INFINITE_LOOP
[ 14.509058] ACPI Error (psparse-0536): Method parse/execution failed [\_TZ_.THM_._TMP] (Node ffff88007f858878), AE_AML_INFINITE_LOOP
..
[ 14.749476] usb 3-1.2: configuration #1 chosen from 1 choice
[ 15.589404] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 15.603541] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.LID_._LID] (Node ffff88007f8581f8), AE_AML_INFINITE_LOOP
[ 15.617394] ACPI: Lid Switch [LID]
[ 15.632375] input: Power Button (CM) as /devices/LNXSYSTM:00/device:00/PNP0C0C:00/input/input6
[ 15.687289] ACPI: Power Button (CM) [PBTN]
[ 15.702897] input: Sleep Button (CM) as /devices/LNXSYSTM:00/device:00/PNP0C0E:00/input/input7
[ 15.737284] ACPI: Sleep Button (CM) [SBTN]
[ 16.624380] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 16.638972] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.PCI0.AGP_.VID_._DOD] (Node ffff88007f85ded8), AE_AML_INFINITE_LOOP
[ 16.654039] ACPI Exception (video-1638): AE_AML_INFINITE_LOOP, Evaluating _DOD [20080926]
[ 17.669507] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 17.685120] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.PCI0.AGP_.VID_.LCD_._ADR] (Node ffff88007f85dd58), AE_AML_INFINITE_LOOP
[ 17.701051] ACPI: Cant attach deviceACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 18.719111] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.PCI0.AGP_.VID_.DVI_._ADR] (Node ffff88007f85dcb8), AE_AML_INFINITE_LOOP
[ 18.735778] ACPI: Cant attach deviceACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 19.745706] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.PCI0.AGP_.VID_._DOS] (Node ffff88007f85def8), AE_AML_INFINITE_LOOP
[ 19.763195] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A03:00/device:22/device:23/input/input8
[ 19.784055] ACPI: Video Device [VID] (multi-head: yes rom: no post: no)
[ 19.893914] tpm_tis 00:0f: 1.2 TPM (device-id 0x1001, rev-id 2)
[ 20.044222] Real Time Clock Driver v1.12b
[ 23.722937] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 23.741371] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 23.759881] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 25.138613] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 25.157545] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 25.176898] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 26.447172] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 26.467212] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 26.487528] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 27.684304] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 27.704947] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 27.725906] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 28.907380] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 28.928958] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 28.950703] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 30.485112] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 30.507460] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 30.530100] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 30.507460] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 30.530100] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 30.701061] Clocksource tsc unstable (delta = -6082993826 ns)
[ 32.770589] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 32.793800] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 32.817635] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 33.984725] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 34.008812] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 34.033236] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 35.550289] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 35.574761] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 35.599301] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 36.985099] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 37.009318] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 37.034035] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 38.169534] ACPI Error (psparse-0536): Method parse/execution failed [\SMI_] (Node ffff88007f851238), AE_AML_INFINITE_LOOP
[ 38.193902] ACPI Error (psparse-0536): Method parse/execution failed [\_SB_.AC__._PSR] (Node ffff88007f8584b8), AE_AML_INFINITE_LOOP
[ 38.218599] ACPI Exception (ac-0135): AE_AML_INFINITE_LOOP, Error reading AC Adapter state [20080926]
[ 38.323556] EXT3 FS on dm-0, internal journal

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