[Xen-changelog] [xen-unstable] x86: fix get_free_pirq

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1251708450 -3600
# Node ID eae7b5ee789738528dac5c309aabd6e316005e0f
# Parent  e8004f6c254a5778b50babd527e74208981640b9
x86: fix get_free_pirq

GSI should not be allocated for other purpose, so change
the hard code limit.

Also fix the out of loop checking, it should be '<' instead of
'=='.

Signed-off-by: Qing He <qing.he@xxxxxxxxx>
---
 xen/arch/x86/irq.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff -r e8004f6c254a -r eae7b5ee7897 xen/arch/x86/irq.c
--- a/xen/arch/x86/irq.c        Thu Aug 27 11:25:34 2009 +0100
+++ b/xen/arch/x86/irq.c        Mon Aug 31 09:47:30 2009 +0100
@@ -1254,10 +1254,10 @@ int get_free_pirq(struct domain *d, int 
     }
     else
     {
-        for ( i = d->nr_pirqs - 1; i >= 16; i-- )
+        for ( i = d->nr_pirqs - 1; i >= nr_irqs_gsi; i-- )
             if ( !d->arch.pirq_irq[i] )
                 break;
-        if ( i == 16 )
+        if ( i < nr_irqs_gsi )
             return -ENOSPC;
     }
 

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