On Tue, 2015-04-21 at 14:50 -0700, Luis R. Rodriguez wrote: This: > + /* MTRR was used if this is non-zero */ > + if (!dd->wc_cookie) > vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
And this:
> + dd->wc_cookie = arch_phys_wc_add(pioaddr, piolen);
> + if (dd->wc_cookie < 0)
> + ret = -EINVAL;
don't agree on what wc_cookie will be on error.
--
Doug Ledford <dledf...@redhat.com>
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