original_kernel/arch/um/kernel/ioport.c

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2021 Intel Corporation
* Author: Johannes Berg <johannes@sipsolutions.net>
*/
#include <asm/iomap.h>
#include <asm-generic/pci_iomap.h>
void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
unsigned int nr)
{
return NULL;
}