tree 3b29c5f68c06604522db63b70c374fe1c31eafb1
parent 202af6d50155f8594ba01d8e0a54d77facc0152a
author john stultz <johnstul@us.ibm.com> 1157084857 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1157135948 -0700

[PATCH] Fix faulty HPET clocksource usage (fix for bug #7062)

Apparently some systems export valid HPET addresses, but hpet_enable()
fails.  Then when the HPET clocksource starts up, it only checks for a
valid HPET address, and the result is a system where time does not advance.

See http://bugme.osdl.org/show_bug.cgi?id=7062 for details.

This patch just makes sure we better check that the HPET is functional
before registering the HPET clocksource.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>