On Mon, Jun 17, 2019 at 10:24:23AM +0200, Christoph Hellwig wrote:
> > - for (i = 0; i < (len / bsize_elem); i++, buffer += bsize_elem) {
> > - struct page *page = sg_page(&scatterlist[i]);
> > + for (i = 0; i < (len / bsize_elem); i++, sg = sg_next(sg), buffer +=
> > bsize_elem) {
>
> Please split the overly long line.
Fine.
>
> > + struct page *page = sg_page(sg);
> >
> > kaddr = kmap(page);
> > memcpy(kaddr, buffer, bsize_elem);
> > kunmap(page);
>
> Not new in this patch, but this is buggy as scatterlists could have
> offsets. This should probably use the scatterlist.c copy helper
> eventually.
This sglist is allocated by driver, see ipr_copy_ucode_buffer(), so
offset for any element is zero.
Thanks,
Ming
