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Dan Williams authored
The semantics of UPF_IIR_ONCE (once per serial irq) are only guaranteed if the kt irq is not shared (once per serial isr in the shared case == potentially unwanted reads of the IIR). Signed-off-by:
Dan Williams <dan.j.williams@intel.com> Acked-by:
Alan Cox <alan@linux.intel.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de>
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