Re: [PATCH] ucc_geth: add support for netpoll

From: Anton Vorontsov
Date: Sat Oct 27 2007 - 10:43:20 EST


On Sat, Oct 27, 2007 at 05:09:51PM +0400, Sergei Shtylyov wrote:
> Hello.
>
> Anton Vorontsov wrote:
>
> > This patch adds netpoll support for the QE UCC Gigabit Ethernet
> > driver. The approach is very similar to the gianfar driver.
>
> It's rather contrarywise -- this is standard approach and gianfar with its
> 3 TSEC IRQs has a quite non-standard poll_controller() implementation.

Oh.. well, right -- gianfar a bit more comlex in that regard.

>
> > Tested using netconsole.
>
> KGDBoE is considered a better test (I hope you've also tested with it).

At the time of posting it was tested using netconsole only, a few
days later it's was tested using KGDBoE also. So, it works indeed.

> > Signed-off-by: Anton Vorontsov <avorontsov@xxxxxxxxxxxxx>
> > diff --git a/drivers/net/ucc_geth.c b/drivers/net/ucc_geth.c
> > index 18a6f48..06807ce 100644
> > --- a/drivers/net/ucc_geth.c
> > +++ b/drivers/net/ucc_geth.c
> > @@ -3691,6 +3691,22 @@ static irqreturn_t ucc_geth_irq_handler(int irq, void *info)
> > return IRQ_HANDLED;
> > }
> >
> > +#ifdef CONFIG_NET_POLL_CONTROLLER
> > +/*
> > + * Polling 'interrupt' - used by things like netconsole to send skbs
> > + * without having to re-enable interrupts. It's not called while
> > + * the interrupt routine is executing.
> > + */
> > +static void ucc_netpoll(struct net_device *dev)
> > +{
> > + struct ucc_geth_private *ugeth = netdev_priv(dev);
> > +
> > + disable_irq(ugeth->ug_info->uf_info.irq);
> > + ucc_geth_irq_handler(ugeth->ug_info->uf_info.irq, dev);
> > + enable_irq(ugeth->ug_info->uf_info.irq);
>
> Why not make it less complex (for a reader and gcc too :-) ?

Yup, I'm agree here but it's too late. Again. ;-)

This patch already accepted into the -mm (a week or so after the
silence), so.. now I'd rather not bother Andrew with such really
cosmetic changes. But if Jeff would directly apply modfied patch,
I'll send it. ;-)


Anyhow, I'm sincerely appreciate your comments.

Thanks,

--
Anton Vorontsov
email: cbou@xxxxxxx
backup email: ya-cbou@xxxxxxxxx
irc://irc.freenode.net/bd2
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