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authorThomas Gleixner <tglx@linutronix.de>2008-05-21 15:14:58 -0400
committerThomas Gleixner <tglx@linutronix.de>2008-07-10 01:10:00 -0400
commit6b148507d3d042a3c11f4c3f6c0f649c6a89220d (patch)
treefb4df1223511e269cbc9cc801dcd22b0ce5f6832 /drivers
parent543cf4cb3fe6f6cae3651ba918b9c56200b257d0 (diff)
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 <tglx@linutronix.de>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/clocksource/acpi_pm.c19
1 files changed, 19 insertions, 0 deletions
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:
215 * but we still need to load before device_initcall 215 * but we still need to load before device_initcall
216 */ 216 */
217fs_initcall(init_acpi_pm_clocksource); 217fs_initcall(init_acpi_pm_clocksource);
218
219/*
220 * Allow an override of the IOPort. Stupid BIOSes do not tell us about
221 * the PMTimer, but we might know where it is.
222 */
223static int __init parse_pmtmr(char *arg)
224{
225 unsigned long base;
226
227 if (strict_strtoul(arg, 16, &base))
228 return -EINVAL;
229
230 printk(KERN_INFO "PMTMR IOPort override: 0x%04lx -> 0x%04lx\n",
231 pmtmr_ioport, base);
232 pmtmr_ioport = base;
233
234 return 1;
235}
236__setup("pmtmr=", parse_pmtmr);