Hello.

On 11/13/2015 04:54 PM, Nikolay Aleksandrov wrote:

From: Nikolay Aleksandrov <[email protected]>

When __netdev_update_features() was updated to ensure some features are
disabled on new lower devices, an error was introduced for devices which
don't have the ndo_set_features() method set. Before we'll just set the
new features, but now we return an error and don't set them. Fix this by
returning the old behaviour and setting err to 0 when ndo_set_features
is not present.

Fixes: e7868a85e1b2 ("net/core: ensure features get disabled on new lower devs")
CC: Jarod Wilson <[email protected]>
CC: Jiri Pirko <[email protected]>
CC: Ido Schimmel <[email protected]>
CC: Sander Eikelenboom <[email protected]>
CC: Andy Gospodarek <[email protected]>
CC: Florian Fainelli <[email protected]>
Signed-off-by: Nikolay Aleksandrov <[email protected]>
---
Sander please feel free to give your Tested-by.

  net/core/dev.c | 2 ++
  1 file changed, 2 insertions(+)

diff --git a/net/core/dev.c b/net/core/dev.c
index ab9b8d0d115e..4a1d198dbbff 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -6426,6 +6426,8 @@ int __netdev_update_features(struct net_device *dev)

        if (dev->netdev_ops->ndo_set_features)
                err = dev->netdev_ops->ndo_set_features(dev, features);
+       else
+               err = 0;

   This makes the 'err' initializer pointless.

MBR, Sergei

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