Orange Pi5 kernel

// SPDX-License-Identifier: GPL-2.0-only
/*
 * EISA specific code
 */
#include <linux/ioport.h>
#include <linux/eisa.h>
#include <linux/io.h>
 
#include <xen/xen.h>
 
static __init int eisa_bus_probe(void)
{
<------>void __iomem *p;
 
<------>if (xen_pv_domain() && !xen_initial_domain())
<------><------>return 0;
 
<------>p = ioremap(0x0FFFD9, 4);
<------>if (p && readl(p) == 'E' + ('I' << 8) + ('S' << 16) + ('A' << 24))
<------><------>EISA_bus = 1;
<------>iounmap(p);
<------>return 0;
}
subsys_initcall(eisa_bus_probe);