diff options
| author | Gordon Willem Klok <gwk@cvs.openbsd.org> | 2009-06-08 23:18:06 +0000 |
|---|---|---|
| committer | Gordon Willem Klok <gwk@cvs.openbsd.org> | 2009-06-08 23:18:06 +0000 |
| commit | a4155bc7189ee7e348c6ab2e5e011eb2cb7f430e (patch) | |
| tree | 1ebf275a3510ae21bfa6543d3f7be3031ba99c60 /sys/arch/amd64 | |
| parent | 617d4179805aab4a335d677afde86fb078456334 (diff) | |
If the machine only has one state enabling the EST driver is pointless,
this might need to be revisted later if its clear that there are machines
which only come up with a single state but more may appear after a PPC
change but for now we will just not initilize on systems with a single
state a boot. Solves a divide by zero panic when using the PDC diff on
broken hardware.
ok marco@, krw@
Diffstat (limited to 'sys/arch/amd64')
| -rw-r--r-- | sys/arch/amd64/amd64/est.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/arch/amd64/amd64/est.c b/sys/arch/amd64/amd64/est.c index 082f89bd05c..6eed7d27070 100644 --- a/sys/arch/amd64/amd64/est.c +++ b/sys/arch/amd64/amd64/est.c @@ -1,4 +1,4 @@ -/* $OpenBSD: est.c,v 1.12 2009/06/06 23:21:43 gwk Exp $ */ +/* $OpenBSD: est.c,v 1.13 2009/06/08 23:18:05 gwk Exp $ */ /* * Copyright (c) 2003 Michael Eriksson. * All rights reserved. @@ -416,6 +416,9 @@ est_init(struct cpu_info *ci) if (est_fqlist == NULL) return; + if (est_fqlist->n < 2) + return; + printf("%s: Enhanced SpeedStep %d MHz", cpu_device, cpuspeed); low = est_fqlist->table[est_fqlist->n - 1].mhz; |