From: Mohammed Gamal Date: Wed, 9 May 2018 08:17:34 +0000 (+0200) Subject: hv_netvsc: Fix net device attach on older Windows hosts X-Git-Tag: v4.19~1050^2~22 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=55be9f25be1ca5bda75c39808fc77e42691bc07f;p=platform%2Fkernel%2Flinux-rpi.git hv_netvsc: Fix net device attach on older Windows hosts On older windows hosts the net_device instance is returned to the caller of rndis_filter_device_add() without having the presence bit set first. This would cause any subsequent calls to network device operations (e.g. MTU change, channel change) to fail after the device is detached once, returning -ENODEV. Instead of returning the device instabce, we take the exit path where we call netif_device_attach() Fixes: 7b2ee50c0cd5 ("hv_netvsc: common detach logic") Signed-off-by: Mohammed Gamal Reviewed-by: Stephen Hemminger Signed-off-by: David S. Miller --- diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c index 6b127be..e7ca5b5 100644 --- a/drivers/net/hyperv/rndis_filter.c +++ b/drivers/net/hyperv/rndis_filter.c @@ -1288,7 +1288,7 @@ struct netvsc_device *rndis_filter_device_add(struct hv_device *dev, rndis_device->link_state ? "down" : "up"); if (net_device->nvsp_version < NVSP_PROTOCOL_VERSION_5) - return net_device; + goto out; rndis_filter_query_link_speed(rndis_device, net_device);