From: Jakub Kicinski Date: Wed, 27 Mar 2019 18:38:39 +0000 (-0700) Subject: nfp: disable netpoll on representors X-Git-Tag: v5.1-rc4~19^2~38^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=c3e1f7fff69c78169c8ac40cc74ac4307f74e36d;p=thirdparty%2Flinux.git nfp: disable netpoll on representors NFP reprs are software device on top of the PF's vNIC. The comment above __dev_queue_xmit() sayeth: When calling this method, interrupts MUST be enabled. This is because the BH enable code must have IRQs enabled so that it will not deadlock. For netconsole we can't guarantee IRQ state, let's just disable netpoll on representors to be on the safe side. When the initial implementation of NFP reprs was added by the commit 5de73ee46704 ("nfp: general representor implementation") .ndo_poll_controller was required for netpoll to be enabled. Fixes: ac3d9dd034e5 ("netpoll: make ndo_poll_controller() optional") Signed-off-by: Jakub Kicinski Reviewed-by: John Hurley Reviewed-by: Simon Horman Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c index 7b46fce2e81e0..94d228c044963 100644 --- a/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c +++ b/drivers/net/ethernet/netronome/nfp/nfp_net_repr.c @@ -383,7 +383,7 @@ int nfp_repr_init(struct nfp_app *app, struct net_device *netdev, netdev->features &= ~(NETIF_F_TSO | NETIF_F_TSO6); netdev->gso_max_segs = NFP_NET_LSO_MAX_SEGS; - netdev->priv_flags |= IFF_NO_QUEUE; + netdev->priv_flags |= IFF_NO_QUEUE | IFF_DISABLE_NETPOLL; netdev->features |= NETIF_F_LLTX; if (nfp_app_has_tc(app)) {