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 594dd7d..49f2410 100644 (file)
--- 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);