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dwc-otg: FIQ: Fix "bad mode in data abort handler"
Create a semi-static mapping for the USB registers early in the boot process, before additional kernel threads are started, so all threads will have the mappings from the start. This avoids the need for data aborts to lazily update them. See: #2450 Signed-off-by: Floris Bos <bos@je-eigen-domein.nl>
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