On Wed, 18 Mar 2009 08:22:46 -0700 Alexander Duyck
<[email protected]> wrote:
> >>>> +static int igbvf_set_ringparam(struct net_device *netdev,
> >>>> + struct ethtool_ringparam *ring)
> >>>> +{
> >>>> + struct igbvf_adapter *adapter = netdev_priv(netdev);
> >>>> + struct igbvf_ring *tx_ring, *tx_old;
> >>>> + struct igbvf_ring *rx_ring, *rx_old;
> >>>> + int err;
> >>>> +
> >>>> + if ((ring->rx_mini_pending) || (ring->rx_jumbo_pending))
> >>>> + return -EINVAL;
> >>>> +
> >>>> + while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state))
> >>>> + msleep(1);
> >>> No timeout needed here? Interrupts might not be working, for example..
> >> This bit isn't set in interrupt context. This is always used out of
> >> interrupt context and is just to prevent multiple setting changes at the
> >> same time.
> >
> > Oh. Can't use plain old mutex_lock()?
>
> We have one or two spots that actually check to see if the bit is set
> and just report a warning instead of actually waiting on the bit to clear.
mutex_is_locked()?
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