Hi Boris,
> > > +
> > > + if (full_erase) {
> > > + off = 0;
> > > + len = mtd->size;
> > > + }
> > > +
> > > + if ((u32)off % mtd->erasesize) {
> >
> > Sounds dangerous. We have 8GB NANDs on sunxi platforms...
>
> [...]
>
> > > +
> > > + if ((u32)len % mtd->erasesize) {
> >
> > Same here. I guess there's a do_div() in uboot.
>
> In both cases I take the less significant bytes of a 64-bit value. The
> modulo operation is safe as long as mtd->erasesize is a 32-bit value
> too. I don't think there is any danger?
As discussed out of this thread, this works because mtd->erasesize is
always a power of 2. Erase sizes not being a power of 2 do not exist
but it will be safer to switch to do_div().
Thanks,
Miquèl
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