Re: [PATCH 3/6] drivers/net: remove null pointer dereference

From: Julia Lawall
Date: Mon May 12 2008 - 14:48:31 EST


On Mon, 12 May 2008, Jeff Garzik wrote:

> Julia Lawall wrote:
> > On Mon, 12 May 2008, Francois Romieu wrote:
> >
> > > Julia Lawall <julia@xxxxxxx> :
> > > [...]
> > > > diff -u -p a/drivers/net/au1000_eth.c b/drivers/net/au1000_eth.c
> > > > --- a/drivers/net/au1000_eth.c 2008-04-27 11:41:11.000000000 +0200
> > > > +++ b/drivers/net/au1000_eth.c 2008-05-12 09:32:54.000000000 +0200
> >>> @@ -1242,7 +1242,7 @@ static irqreturn_t au1000_interrupt(int
> > > > struct net_device *dev = (struct net_device *) dev_id;
> > > >
> > > > if (dev == NULL) {
> > > > - printk(KERN_ERR "%s: isr: null dev ptr\n", dev->name);
> > > > + printk(KERN_ERR "isr: null dev ptr\n");
> > > > return IRQ_RETVAL(1);
> > > > }
> > > The lifespan of 'dev' covers the request_irq..free_irq interval in this
> > > driver. The whole 'dev == NULL' block can be removed.
> >
> > Will you do that?
>
> It's normal within the Linux community to give feedback on patches, and
> sometimes the authors need to revise their patches if helpful feedback arises.

Sorry. In principle, I would be happy to do it, but I felt slightly
uneasy about doing something I didn't completely understand.

julia
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