From 6b148507d3d042a3c11f4c3f6c0f649c6a89220d Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 21 May 2008 21:14:58 +0200 Subject: 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: Thomas Gleixner --- drivers/clocksource/acpi_pm.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'drivers/clocksource') diff --git a/drivers/clocksource/acpi_pm.c b/drivers/clocksource/acpi_pm.c index 7b46faf22318..3baee020afc2 100644 --- a/drivers/clocksource/acpi_pm.c +++ b/drivers/clocksource/acpi_pm.c @@ -215,3 +215,22 @@ pm_good: * 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); -- cgit v1.2.3