From: Thomas Monjalon <thomas@monjalon.net>
Date: Sun, 18 Nov 2018 21:14:26 +0000 (+0100)
Subject: vfio: fix build with Linux < 4.0
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=b91bc6f35793c863ce15e907ad6144ada8f7f46b;p=dpdk.git

vfio: fix build with Linux < 4.0

drivers/bus/pci/linux/pci_vfio.c:45:23: error:
‘failure_handle_lock’ defined but not used

Fixes: 8ffe73865124 ("vfio: add lock for hot-unplug failure handler")

Signed-off-by: Thomas Monjalon <thomas@monjalon.net>
---

diff --git a/drivers/bus/pci/linux/pci_vfio.c b/drivers/bus/pci/linux/pci_vfio.c
index d2c84106fc..ffd26f1953 100644
--- a/drivers/bus/pci/linux/pci_vfio.c
+++ b/drivers/bus/pci/linux/pci_vfio.c
@@ -36,14 +36,6 @@
  * This file is only compiled if CONFIG_RTE_EAL_VFIO is set to "y".
  */
 
-/*
- * spinlock for device hot-unplug failure handling. If it try to access bus or
- * device, such as handle sigbus on bus or handle memory failure for device
- * just need to use this lock. It could protect the bus and the device to avoid
- * race condition.
- */
-static rte_spinlock_t failure_handle_lock = RTE_SPINLOCK_INITIALIZER;
-
 #ifdef VFIO_PRESENT
 
 #ifndef PAGE_SIZE
@@ -291,6 +283,14 @@ pci_vfio_setup_interrupts(struct rte_pci_device *dev, int vfio_dev_fd)
 }
 
 #ifdef HAVE_VFIO_DEV_REQ_INTERFACE
+/*
+ * Spinlock for device hot-unplug failure handling.
+ * If it tries to access bus or device, such as handle sigbus on bus
+ * or handle memory failure for device, just need to use this lock.
+ * It could protect the bus and the device to avoid race condition.
+ */
+static rte_spinlock_t failure_handle_lock = RTE_SPINLOCK_INITIALIZER;
+
 static void
 pci_vfio_req_handler(void *param)
 {