From: Cunming Liang <cunming.liang@intel.com>
Date: Fri, 13 Nov 2015 02:50:26 +0000 (+0800)
Subject: ixgbe: fix VFIO interrupt vector
X-Git-Tag: spdx-start~7997
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=4ba427971a9fab416e207f1acd091b8a66d6d4b6;p=dpdk.git

ixgbe: fix VFIO interrupt vector

The vector number may change during 'dev_start'. Before enabling a new vector mapping,
it's necessary to disable/unmap the previous setting.

Fixes: 7ab8500037f6 ("ixgbe: fix VF start with PF stopped")

Reported-by: Yong Liu <yong.liu@intel.com>
Signed-off-by: Cunming Liang <cunming.liang@intel.com>
Tested-by: Yong Liu <yong.liu@intel.com>
Acked-by: Wenzhuo Lu <wenzhuo.lu@intel.com>
---

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 594dd7db1e..49f2410a19 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -1991,6 +1991,9 @@ ixgbe_dev_start(struct rte_eth_dev *dev)
 		return -EINVAL;
 	}
 
+	/* disable uio/vfio intr/eventfd mapping */
+	rte_intr_disable(intr_handle);
+
 	/* stop adapter */
 	hw->adapter_stopped = 0;
 	ixgbe_stop_adapter(hw);