https://github.com/torvalds/linux
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Tip revision: 39dae59d66acd86d1de24294bd2f343fd5e7a625 authored by Linus Torvalds on 05 November 2017, 21:05:14 UTC
Linux 4.14-rc8
Tip revision: 39dae59
eisa.c
/*
 * EISA specific code
 *
 * This file is licensed under the GPL V2
 */
#include <linux/ioport.h>
#include <linux/eisa.h>
#include <linux/io.h>

static __init int eisa_bus_probe(void)
{
	void __iomem *p = ioremap(0x0FFFD9, 4);

	if (readl(p) == 'E' + ('I'<<8) + ('S'<<16) + ('A'<<24))
		EISA_bus = 1;
	iounmap(p);
	return 0;
}
subsys_initcall(eisa_bus_probe);
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