From: Edward Cree <[email protected]> Date: Tue, 20 Jun 2017 13:08:51 +0100
> Somehow two copies of the line 'up_write(&vf->efx->filter_sem);' got into
> efx_ef10_sriov_set_vf_vlan(). This would put the mutex in a bad state and
> cause all subsequent down attempts to hang.
>
> Fixes: 671b53eec2ed ("sfc: Ensure down_write(&filter_sem) and up_write() are
> matched before calling efx_net_open()")
> Signed-off-by: Edward Cree <[email protected]>
Applied and queued up for -stable.
