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[Xen-changelog] [xen-4.1-testing] x86: Bail from hpet_disable_legacy_bro
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| Subject: | [Xen-changelog] [xen-4.1-testing] x86: Bail from hpet_disable_legacy_broadcast() if legacy_hpet_event is uninitialised. |
| From: | Xen patchbot-4.1-testing <patchbot@xxxxxxx> |
| Date: | Wed, 27 Apr 2011 05:15:08 +0100 |
| Delivery-date: | Tue, 26 Apr 2011 21:15:19 -0700 |
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# HG changeset patch
# User Keir Fraser <keir@xxxxxxx>
# Date 1303823478 -3600
# Node ID 7c7ef1b6f4e571a31f8e9e3be5c30d94a75fe7b2
# Parent 7361cc362d642e73b49c319e2263d6b4fe2fe011
x86: Bail from hpet_disable_legacy_broadcast() if legacy_hpet_event is
uninitialised.
Signed-off-by: Keir Fraser <keir@xxxxxxx>
---
diff -r 7361cc362d64 -r 7c7ef1b6f4e5 xen/arch/x86/hpet.c
--- a/xen/arch/x86/hpet.c Mon Apr 25 15:28:33 2011 +0100
+++ b/xen/arch/x86/hpet.c Tue Apr 26 14:11:18 2011 +0100
@@ -647,6 +647,9 @@
u32 cfg;
unsigned long flags;
+ if ( !legacy_hpet_event.shift )
+ return;
+
spin_lock_irqsave(&legacy_hpet_event.lock, flags);
legacy_hpet_event.flags |= HPET_EVT_DISABLE;
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