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authorIan Campbell <Ian.Campbell@eu.citrix.com>2011-02-03 09:49:35 +0000
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2011-03-03 12:00:27 -0500
commit7214610475b2847a81478d96e4d3ba0bbe49598c (patch)
tree23d1751896bca0be6d90c59e81d1b41db6001114 /drivers/xen/events.c
parent89911501f3aae44a43984793341a3bf1f4c583c2 (diff)
xen: events: do not free legacy IRQs
c514d00c8057 "xen: events: add xen_allocate_irq_{dynamic, gsi} and xen_free_irq" correctly avoids reallocating legacy IRQs (which are managed by the arch core) but erroneously did not prevent them being freed. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'drivers/xen/events.c')
-rw-r--r--drivers/xen/events.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/xen/events.c b/drivers/xen/events.c
index 06f2e61de69..accb37ad094 100644
--- a/drivers/xen/events.c
+++ b/drivers/xen/events.c
@@ -434,6 +434,10 @@ static int xen_allocate_irq_gsi(unsigned gsi)
static void xen_free_irq(unsigned irq)
{
+ /* Legacy IRQ descriptors are managed by the arch. */
+ if (irq < NR_IRQS_LEGACY)
+ return;
+
irq_free_desc(irq);
}