From: Cunming Liang <cunming.liang@intel.com>
Date: Fri, 13 Nov 2015 02:50:27 +0000 (+0800)
Subject: igb: fix VFIO interrupt vector
X-Git-Tag: spdx-start~7998
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=4a4ee6c361e7238eb7a1a693deade2be03b1c9eb;p=dpdk.git

igb: 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: fe685de2b1b6 ("igb: fix VF start with PF stopped")

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

diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index bfc4124a62..31452ae970 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -1101,6 +1101,9 @@ eth_igb_start(struct rte_eth_dev *dev)
 
 	PMD_INIT_FUNC_TRACE();
 
+	/* disable uio/vfio intr/eventfd mapping */
+	rte_intr_disable(intr_handle);
+
 	/* Power up the phy. Needed to make the link go Up */
 	e1000_power_up_phy(hw);