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Diffstat (limited to 'arch/arm/xen/enlighten.c')
-rw-r--r--arch/arm/xen/enlighten.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 7d0f07020c80..6fbdc8fa4a19 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -51,7 +51,7 @@ EXPORT_SYMBOL_GPL(xen_have_vector_callback);
int xen_platform_pci_unplug = XEN_UNPLUG_ALL;
EXPORT_SYMBOL_GPL(xen_platform_pci_unplug);
-static __read_mostly int xen_events_irq = -1;
+static __read_mostly unsigned int xen_events_irq;
int xen_remap_domain_mfn_array(struct vm_area_struct *vma,
unsigned long addr,
@@ -179,12 +179,14 @@ static int __init xen_guest_init(void)
return 0;
grant_frames = res.start;
xen_events_irq = irq_of_parse_and_map(node, 0);
+ if (!xen_events_irq) {
+ pr_debug("Xen event channel interrupt not found\n");
+ return -ENODEV;
+ }
+
pr_info("Xen %s support found, events_irq=%d gnttab_frame=%pa\n",
version, xen_events_irq, &grant_frames);
- if (xen_events_irq < 0)
- return -ENODEV;
-
xen_domain_type = XEN_HVM_DOMAIN;
xen_setup_features();