Commit 6b148507 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

pmtmr: allow command line override of ioport 



Stupid BIOSes do not tell us about the PMTimer, 
but we might know where it is.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 543cf4cb

drivers/clocksource/acpi_pm.c

+19 −0
Original line number Diff line number Diff line
@@ -215,3 +215,22 @@ static int __init init_acpi_pm_clocksource(void) 
 * but we still need to load before device_initcall

 */

fs_initcall(init_acpi_pm_clocksource);



/*

 * Allow an override of the IOPort. Stupid BIOSes do not tell us about

 * the PMTimer, but we might know where it is.

 */

static int __init parse_pmtmr(char *arg)

{

	unsigned long base;



	if (strict_strtoul(arg, 16, &base))

		return -EINVAL;



	printk(KERN_INFO "PMTMR IOPort override: 0x%04lx -> 0x%04lx\n",

	       pmtmr_ioport, base);

	pmtmr_ioport = base;



	return 1;

}

__setup("pmtmr=", parse_pmtmr);