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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-12-16 12:32:23 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-16 22:01:46 +0100 |
| commit | 39c04b55240342d0742ac48538d3d8c71bfc0a94 (patch) | |
| tree | 13f5bb09b626fb60f7dd1b8d3b506617e585dd9b /arch/x86/kernel/hpet.c | |
| parent | bacbe9994541c70aa3abd1a013ac738e58d4bfb2 (diff) | |
| download | blackbird-op-linux-39c04b55240342d0742ac48538d3d8c71bfc0a94.tar.gz blackbird-op-linux-39c04b55240342d0742ac48538d3d8c71bfc0a94.zip | |
x86: make sure we really have an hpet mapping before using it
Impact: prepare the hpet code for Xen dom0 booting
When booting in Xen dom0, the hpet isn't really accessible, so make
sure the mapping is non-NULL before use.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/hpet.c')
| -rw-r--r-- | arch/x86/kernel/hpet.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index 84089dc8fd1d..a1f6ed5e1a05 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -834,10 +834,11 @@ static __init int hpet_late_init(void) hpet_address = force_hpet_address; hpet_enable(); - if (!hpet_virt_address) - return -ENODEV; } + if (!hpet_virt_address) + return -ENODEV; + hpet_reserve_platform_timers(hpet_readl(HPET_ID)); for_each_online_cpu(cpu) { |
