Rafael J. Wysocki wrote:
On Sunday, 30 September 2007 20:39, Alexey Starikovskiy wrote:
ACPI uses acpi_get_register() in order to get into suspend.
This function is guarded by acpi_gbl_hardware_lock, which will be carried
into resume phase.
At resume interrupts are enabled and first ACPI interrupt deadlocks on this
lock.
Ouch. That might have bitten quite some people, I guess.
Solution seems to be to not lock register read, as there are no concurrent
activity at this point.
Reference: http://bugzilla.kernel.org/show_bug.cgi?id=7499
Signed-off-by: Alexey Starikovskiy <astarikovskiy@xxxxxxx>
Do you think it's -stable material?
Seem to be trivial.
Regards,
Alex.
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