[U-Boot] [PATCH v3 1/3] net: Adds Fast Ethernet Controller driver for Armada100

[Mike Frysinger]

On Monday, August 29, 2011 01:39:18 Ajay Bhargav wrote:
> ----- "Mike Frysinger" <vapier at gentoo.org> wrote:
> > On Monday, August 29, 2011 01:10:49 Ajay Bhargav wrote:
> > > ----- "Mike Frysinger" <vapier at gentoo.org> wrote:
> > > > On Friday, August 26, 2011 02:36:51 Ajay Bhargav wrote:
> > > > > +        darmdfec = malloc(sizeof(struct armdfec_device));
> > > > > +        if (!darmdfec)
> > > > > +                goto error;
> > > > 
> > > > if this first one fails, we jump to:
> > > > > +error:
> > > > > +        free(darmdfec->p_aligned_txbuf);
> > > > > +        free(darmdfec->p_rxbuf);
> > > > > +        free(darmdfec->p_rxdesc);
> > > > > +        free(darmdfec->htpr);
> > > > 
> > > > looks like 4 NULL pointer derefs.  so you'll need one specific
> > 
> > path
> > 
> > > > for the first malloc(), but the rest are fine.
> > > 
> > > so you mean like this...
> > > 
> > > if(!darmdfec)
> > > 
> > >         goto error;
> > > 
> > > ...
> > > 
> > > error1:
> > >         free(darmdfec->p_aligned_txbuf);
> > >         free(darmdfec->p_rxbuf);
> > >         free(darmdfec->p_rxdesc);
> > >         free(darmdfec->htpr);
> > > 
> > > error:
> > >         free(darmdfec);
> > >         return -1;
> > 
> > that's one way of fixing it
> 
> Any other better way?

since all your buffers are known fixed (at compile time) sizes, you could 
simply inline them into the structure so you only malloc() one buffer
-mike
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