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 bfc4124..31452ae 100644 (file)
--- 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);