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Optimise interrupt logic. Technically writing a zero to the XHCI USB

Description

Optimise interrupt logic. Technically writing a zero to the XHCI USB
status register has no effect. Can happen when the interrupt vector is
shared.

MFC after: 1 week

Details

Provenance
hselaskyAuthored on
Parents
rS260535: Force clearing of event ring interrupts. The "Intel Lynx Point" XHCI
Branches
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Tags
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