[dpdk-dev] [PATCH 2/2] igb: 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: fe685de2b1b6 ("igb: 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/e1000/igb_ethdev.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/e1000/igb_ethdev.c b/drivers/net/e1000/igb_ethdev.c
index 4bf4e52..c61ceab 100644
--- a/drivers/net/e1000/igb_ethdev.c
+++ b/drivers/net/e1000/igb_ethdev.c
@@ -1092,6 +1092,9 @@ 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);

-- 
2.4.3