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Subject: RE: 2.6.16-rc5: known regressions [TP 600X S3, vanilla DSDT] 
Date: Fri, 24 Mar 2006 09:31:46 +0800
Message-ID: <3ACA40606221794F80A5670F0AF15F840B469696@pdsmsx403>
Thread-Topic: 2.6.16-rc5: known regressions [TP 600X S3, vanilla DSDT] 
Thread-Index: AcZOrvkPb7swOezVT4WoNvklebIJKQAL+khA
From: "Yu, Luming" <luming.yu@intel.com>
To: "Sanjoy Mahajan" <sanjoy@mrao.cam.ac.uk>
Cc: <linux-kernel@vger.kernel.org>, "Linus Torvalds" <torvalds@osdl.org>,
       "Andrew Morton" <akpm@osdl.org>, "Tom Seeley" <redhat@tomseeley.co.uk>,
       "Dave Jones" <davej@redhat.com>, "Jiri Slaby" <jirislaby@gmail.com>,
       <michael@mihu.de>, <mchehab@infradead.org>,
       "Brian Marete" <bgmarete@gmail.com>,
       "Ryan Phillips" <rphillips@gentoo.org>, <gregkh@suse.de>,
       "Brown, Len" <len.brown@intel.com>, <linux-acpi@vger.kernel.org>,
       "Mark Lord" <lkml@rtr.ca>, "Randy Dunlap" <rdunlap@xenotime.net>,
       <jgarzik@pobox.com>, "Duncan" <1i5t5.duncan@cox.net>,
       "Pavlik Vojtech" <vojtech@suse.cz>, "Meelis Roos" <mroos@linux.ee>
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 1497
Lines: 46

es it mean we need to slow down  acpi_ec_intr_read/write ?
>> Could you try to insert acpi_os_stall (100)  after  ACPI_DEBUG_PRINT
>> statement both in acpi_ec_intr_read/write.
>
>I added that line in those two places.  The result refused to hang with
>acpi_debug_layer=0x00100010, but it did hang (on the usual 
>second sleep)
>with it set to 0x10.

Really strange,  how several printks could change the results.
Could you try to repalce acpi_os_stall with acpi_os_sleep(1)
in acpi_ec_intr_read/write?

>
>> Hmmm, then I cannot get the ec access log for hang case?!
>
>It seems difficult, but let's keep trying if you have other ideas for
>how to get it.
>

Also, please change I2RB copy to: 

                    Method (I2RBcopy, 3, NotSerialized)
                    {
                        Store (Arg0, HCSL)
                        Store (ShiftLeft (Arg1, 0x01), HMAD)
                        Store (Arg2, HMCM)
                        Store (0x0B, HMPR)

		Store(CHKS(), local0)
		Store(local0, Debug)

                        Return (local0)
                    }
And boot with acpi_dbg_layer=0x10 acpi_dbg_level=0x10,
Post full log (Don't edit) for both not hang case, and hang case on
bugzilla.
There should have some clues.

Thanks,
Luming
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