linux-kernel - Re: acpi-test tree on eeepc: EC error message on second resume

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Message-ID: <48F100CA.2050600@suse.de>
Date:	Sat, 11 Oct 2008 23:38:50 +0400
From:	Alexey Starikovskiy <astarikovskiy@...e.de>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
CC:	Alexey Starikovskiy <aystarik@...il.com>,
	Alan Jenkins <alan-jenkins@...fmail.co.uk>,
	linux acpi <linux-acpi@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: acpi-test tree on eeepc: EC error message on second resume

Rafael J. Wysocki wrote:
>> No, we discussed this before -- we are outside of the transaction, thus 
>> no GPE
>> activity could interfere with ec_check_ibf0.
> 
> Ok, this is in the process context and we don't really expect to get an
> interrupt at this point, but what happens if the EC generates an event that's
> not related to any transiaction.  Is that guaranteed to never happen?
Interrupt handler in this case can't cause a change to status register, thus our 
read of it will not be affected by interrupt.
> 
> Thanks,
> Rafael

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