Re: ec locking issue

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Hi,

On Mon, Feb 19, 2007 at 08:44:31AM -0500, Dominik Brodowski wrote:
> On Fri, Feb 16, 2007 at 12:54:55PM -0500, Len Brown wrote:
> > > > acpi_ec_transaction
> > > > acpi_ec_read
> > > > acpi_ec_space_handler
> > > > acpi_ev_address_space_dispatch
> > > > acpi_ex_access_region
> > > > acpi_ex_field_datum_
> > > > acpi_ex_extract_from_field
> > > > ...
> > > > acpi_ex_ns_evaluate
> > > > acpi_ev_execute_reg_method
> > > > acpi_ev_reg_run
> > > > acpi_ns_walk_namespace
> > > > acpi_ev_execute_reg_methods
> > > > acpi_install_address_space_handler
> > > > acpi_ec_start
> > > > acpi_start_single_object
> > > > acpi_device_probe
> > > > really_probe
> > > > ...
> > > > bus_add_driver
> > > > ...
> > > > acpi_ec_init
> > 
> > Alexey,
> > Thanks for the fix -- it is applied.
> > 
> > Dominik,
> > Did this fix help, or is the problem elsehwere?
> 
> Unfortunately, this doesn't solve the issue for me -- now I get a panic with
> EIP at __list_add+0x2d/0x60, with the call trace being
> 
> 	...
> 	die
> 	do_page_fault
> 	error_code
> 	__mutex_lock_slowpath
> 	mutex_lock
> 	acpi_ec_transaction
> 
> and then the same as above... Will try it out with lockdep disabled.

No, doesn't seem to be lockdep-related; same issue continues. "acpi=off"
fixes the issue, though, of course...

Thanks,
	Dominik
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