[dpdk-dev] [PATCH 1/2] ixgbe: fix vfio ioctl SET_IRQS error

[Cunming Liang]

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 at intel.com>
Signed-off-by: Cunming Liang <cunming.liang at intel.com>
---
 drivers/net/ixgbe/ixgbe_ethdev.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 19ddb52..c2be264 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -1976,6 +1976,9 @@ 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);
-- 
2.4.3