[QEMU][PATCH v1] Xen: Fix xen_set_irq() and xendevicemodel_set_irq_level()

[Vikram Garhwal <vikram.garhwal@xxxxxxx>]

Remove '=' from 'if CONFIG_XEN_CTRL_INTERFACE_VERSION <= 41500'.
Because xendevicemodel_set_irq_level() was introduced in 4.15 version.

Also, update xendevicemodel_set_irq_level() to return -1 for older versions.

Signed-off-by: Vikram Garhwal <vikram.garhwal@xxxxxxx>
---
 hw/arm/xen_arm.c            | 4 +++-
 include/hw/xen/xen_native.h | 4 ++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/hw/arm/xen_arm.c b/hw/arm/xen_arm.c
index f83b983ec5..a5631529d0 100644
--- a/hw/arm/xen_arm.c
+++ b/hw/arm/xen_arm.c
@@ -75,7 +75,9 @@ static MemoryRegion ram_lo, ram_hi;
 
 static void xen_set_irq(void *opaque, int irq, int level)
 {
-    xendevicemodel_set_irq_level(xen_dmod, xen_domid, irq, level);
+    if (xendevicemodel_set_irq_level(xen_dmod, xen_domid, irq, level)) {
+        error_report("xendevicemodel_set_irq_level failed");
+    }
 }
 
 static void xen_create_virtio_mmio_devices(XenArmState *xam)
diff --git a/include/hw/xen/xen_native.h b/include/hw/xen/xen_native.h
index 5d2718261f..6f09c48823 100644
--- a/include/hw/xen/xen_native.h
+++ b/include/hw/xen/xen_native.h
@@ -523,12 +523,12 @@ static inline int xen_set_ioreq_server_state(domid_t dom,
                                                  enable);
 }
 
-#if CONFIG_XEN_CTRL_INTERFACE_VERSION <= 41500
+#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 41500
 static inline int xendevicemodel_set_irq_level(xendevicemodel_handle *dmod,
                                                domid_t domid, uint32_t irq,
                                                unsigned int level)
 {
-    return 0;
+    return -1;
 }
 #endif
 
-- 
2.17.1