Bug 5372

Summary:	The Read access automatic dereference for RefOf reference doesn't work
Product:	ACPI	Reporter:	Valery A Podrezov (Valery.A.Podrezov)
Component:	ACPICA-Core	Assignee:	Lin Ming (ming.m.lin)
Status:	REJECTED DOCUMENTED
Severity:	normal	CC:	acpi-bugzilla
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6	Subsystem:
Regression:	---	Bisected commit-id:
Attachments:	ASL code to reproduce bug. ArgX object auto deference support

Description Valery A Podrezov 2005-10-05 09:07:56 UTC

Most recent kernel where this bug did not occur:
Distribution:
Hardware Environment:
Software Environment:
Problem Description:

The Linux kernel ACPI interpreter fails the following
AML test when it is compiled into a simulator. So if an
OEM BIOS includes this code, Linux would fail.

Steps to reproduce:

Run interpreter with the .asl demo code attached below.

Comment 1 Valery A Podrezov 2005-10-05 09:11:29 UTC

Created attachment 6230 [details]
ASL code to reproduce bug.

The Read access automatic dereference performs one dereference for
reference to object (but not object itself) passed to Method by argX
(no need to do DerefOf, though applying DerefOf provides the same
result as without it in this case).

In case a passed to Method reference is obtained by the
RefOf operation this feature doesn't work, but should.
Exception occurs instead.

INTERNAL BUG NUMBER

   126

Comment 2 Dave Jones 2007-05-17 15:06:29 UTC

did this ever get fixed ?

Comment 3 Lin Ming 2007-10-10 19:44:44 UTC

Bug still exist at ACPICA-v20070912

Comment 4 Lin Ming 2007-10-10 19:47:59 UTC

*** Bug 5373 has been marked as a duplicate of this bug. ***

Comment 5 Lin Ming 2007-10-10 20:01:22 UTC

*** Bug 5374 has been marked as a duplicate of this bug. ***

Comment 6 Lin Ming 2007-10-28 00:29:01 UTC

Created attachment 13295 [details]
ArgX object auto deference support

Comment 7 Len Brown 2008-01-06 20:56:36 UTC

moving to RESOLVED b/c proposed ACPICA patch is present in comment #6
What ACPICA release contains this patch?

Comment 8 Lin Ming 2008-01-06 21:10:34 UTC

This patch has not been integrated to ACPICA release yet.

Comment 9 Len Brown 2008-06-13 20:13:17 UTC

lin-ming, what is the state of this sighting?

Comment 10 Len Brown 2008-06-27 22:18:32 UTC

please mark at RESOLVED when a patch is integrated
into the ACPICA source tree

Comment 11 Lin Ming 2008-10-15 00:48:51 UTC

Move to acpica bugzilla since it's an pure CA bug
http://www.acpica.org/bugzilla/show_bug.cgi?id=737